Ducted vs Split

Panasonic High Wall Split installed in a wall

What To Choose? Ducted Air Conditioners vs Split Air Conditioner 

So, you’re after an air conditioner but are stuck on which type to purchase – a ducted reverse cycle system or a high wall split system?

Both are effective at cooling a space, but the way that they do this differs dramatically. Your choice will often depend on a number of factors such as the space that you are wanting to cool, your budget, whether your home can accommodate the system, and much more.

Split-or-Ducted-Air-Coditioner-Panasonic

Ducted Air Conditioning

Ducted reverse cycle air conditioners work just as the name suggests – through a series of ducts. These are hidden within the roof space and out of sight, making it the more attractive choice. They contain a central unit, known as the fan-coil unit. Ducts then branch off of this fan-coil unit and run to different rooms/zones within your home. The air is expelled from the vents in your ceiling, which are the only visible parts of the system.

Return Air Grilles above a Kitchen
GREEN EFFICIENT LIVING CAN PROVIDE YOU WITH A NUMBER OF DUCTED REVERSE CYCLE AIR CONDITIONING OPTIONS THAT SUIT YOUR LIFESTYLE AND REDUCE ENERGY WASTAGE

There are many pros for ducted air conditioning in comparison to split systems, with one of the biggest being that you can easily and efficiently heat or cool your whole home at the touch of a button. Controlled by a thermostat, ducted systems are much better at keeping a consistent temperature throughout your whole home, but the option to have your system zoned means that you can individually control the amount of conditioned air to each room. There are two ways that you can do this; with a simple on/off switch, or a variable air volume controller which you can increase or decrease the amount of airflow to suit your requirements. The last option also allows for better air balancing throughout your system. The entire system is completely hidden within the roof cavity of your home (besides the vents in your ceilings), making it the more attractive option over split systems. Ducted systems are often a lot quieter than their counterparts, with the only noise being a quiet fan noise from the outdoor unit, and gentle passing of air through the central filtration grille.

Despite the extensive list of pros, ducted air conditioning systems also have their limitations. Ducted systems are the more expensive option to purchase and have installed. As the system is installed within your roof, technicians will need to spend a large amount of time and effort, cutting into your ceiling and this can often add to the cost. Having a ducted system installed is best done during the building or renovation of your home (but not limited to), and they can often be restricted to which homes they can be installed in. Apartments and dwellings with limited roof space often may not be able to have ducted systems installed due to this reason, and already built two-storey homes need a large amount of extra consideration and planning. They are also not the best option if you only spend an extensive amount of time in only a small area of your home.

Split System Air Conditioning

Split system air conditioners are the most ideal solution for single room heating and cooling. They are made up of two components – an indoor unit (head unit) and an outdoor unit (compressor). The indoor unit moves the cool air around the room, while the outdoor unit dissipates the heat from the cooled area (heat exchange).

Panasonic High Wall Split installed in a wall

Split system air conditioners are the more cost-effective choice to purchase and have installed. Due to the fact that you are not purchasing an entire system of ductwork and vents, the costs can be minimal in comparison to ducted systems. A considerably less amount of time is needed for technicians to install them, and there is minimal modification required to your home. If budget is a restraining factor, more split systems can be added to your home if you require later on, or as your budget allows. Due to the fact that split systems only heat or cool one room or space of your home, they have lower energy demands and therefore are quite cost-effective to run.

However, there are also cons involved with having a split system installed within your home. The heating or cooling capacity is limited with splits, and therefore may not be a possible option for your space. While they are the cheaper option singularly, if you need multiple units within your home, the costs can add up. The bulkiness of both the indoor unit and the outdoor unit, and the inability to hide them can often become an eyesore and stand out on your wall. So if you are looking for a neat and tidy option that is easily concealed, then a split system is not your choice.

So which option is best for me?

Each of these systems essentially performs the same job, but personal preferences and limitations can restrict which one is best for you. It is important to take into account each of the pros and cons provided so that your system benefits you for years to come.

Factors to think of when deciding include:

  • What maintenance/upkeep is included – A ducted system will require yearly services by a professional, while a split system will require more regular cleaning that can be completed by the homeowner, and professional servicing less frequently.
  • How much you want to spend – A ducted system will cost more to purchase and have installed upfront but the options to zone your system means that their running costs can be reduced. While a singular split system will cost less upfront, should you need to add more in the future, the costs can add up.
  • What area you are looking to cool – Do you want to cool your entire home or just one room? Should you only need one room cooled, is important to think about whether you will be wanting to cool more in the future.
  • Aesthetics – The way the system will look is also something to think about. While split systems stand-out on both an indoor and outdoor wall, they are becoming much more visually appealing.

If you are unsure about which system is best for you, call us today on (08) 8297 3422 to speak to one of our professionals. We can provide fuss-free quotes for more than one type of system so that you can weigh up your options.

Solar FAQs

Frequently Asked Solar Questions

Over the years we’ve become accustomed to hearing the same questions relating to having a solar photovoltaic (PV) system installed. So, as we are dedicated to education and helping our customers as much as we can, we have compiled a list of our most frequently asked questions to help you on your journey.

1. What is a grid-connected solar system?

A home without a solar system draws its energy from the electricity grid. A grid-connected solar system is a solar PV system that is connected to the electricity grid. Your household will consume the energy that is created from your solar system first, and if more is needed, it will draw the remaining electricity from the grid. It also allows your system to send power back out to the grid. If your household is not consuming the entire amount of energy that your system is creating, then that surplus is sent back out to the electricity grid. This surplus is measured and credited back onto your power bill. Depending on what state you live in and what electricity supplier you are with, this value will vary.

2. How much will my solar system cost me?

As an extremely broad question, the answer is dependent on a number of factors. The final price depends on what brand of system you choose, how many panels you have installed, whether you decide on a string inverter or microinverter and much more.

ALWAYS get multiple quotes to compare prices and remember that the most expensive quote doesn’t necessarily mean equate to the best system. In South Australia, on average a 5kW (kilowatt) system costs approximately $5,500 but there are some elements that will affect this price.

3. What size system do I need?

To answer this question, your system designer will need to understand your energy habits such as your daily usage amount, your energy usage patterns, your location, etc. From here, they will be able to offer you the correct sized system. While your installer should be able to offer you a rough estimate just by receiving your latest electricity bill, they should not be able to present you with an ACCURATE system size without first asking these questions.

4. How many solar panels will I need?

Once your installer determines the system size that your household requires, they will then look at what panels will best suit your system. Not all panels are created the same, or yield the same amount. So your installer should be working out which panels are most appropriate for your lifestyle and energy patterns. They will also need to look at elements such as your roof size and budget.

5. Will anything else affect the price of my system?

There are a few added elements that will affect the overall price of your system. Each solar PV system is tailored individually, so don’t assume that just because your family member has a 5kW system with X amount of panels on their home, means that you will pay the same price for the same system. Factors need to be taken into account such as additional labour costs for things like a double storey roof, panel mounting brackets to angle your panels correctly if your roof is flat and much more.

6. How much money will I save with my solar system?

Typically, it can take anywhere from four to six years for a system to pay itself off in South Australia. Payback times depend on a number of things such as your location, your energy consumption, daily usage patterns, how well you maintain your system, the size of your system and your feed-in tariff.

Ensuring that you have the correct sized system will speed up your payback times. Having a system that is large enough is important as it will not only cover your power consumption, but it will maximise your return on investment. But having a system that is too large will mean that you’re exporting a large surplus of energy back into the grid and as feed-in tariffs are no longer as high, you will be selling your power for less than your electricity rates. So it’s important to ensure that your system is correctly sized to maximise your return.

7. Is my roof right for solar?

Not every roof is suitable to have a solar system installed on it. Generally, there are six key factors that will determine the suitability of your system.

  • Orientation: While a north-facing roof is best for optimum production in South Australia, it has been proven that panels facing north.
  • Shade: Solar panels only produce maximum energy in full sunlight. If a part of a panel becomes
    Image showing partial shading of solar panels
    Shadows on solar panels can affect the generation values of the entire system.

    shaded, then the output level is reduced. It is therefore necessary that your roof does not experience any shade if possible. Vegetation and overgrown trees can easily be removed, but shade from chimneys or poles on the roof is much more difficult to work around. If there are certain ares of you roof that do experience shading during the day, then your installer may offer you a system with microinverters to avoid your output dropping too much.

  • Size: Your roof has to be large enough to have the space for the number of panels that you require. The minimum sized system that can be installed in Australia is a 1.5kW, which generally equates to 6 solar panels. If your roof is not large enough for 6 solar panels, then you may need to look at other options.
  • Age: The age of your roof will be an indication of its structural integrity. If you are in an older home and are unsure about whether your roof will be able to safely support a solar system then it is best to have an inspection done beforehand.
  • Pitch: Solar panels
    Solar panels installed on a roof with a very steep pitch
    The pitch of your solar panels can greatly affect their power generation values.

    generate maximum power when they are positioned perpendicular to the sun. Your installer will need to take the pitch of your roof into account when installing your panels at the optimal angle. If the pitch of your roof is too flat or too steep, then your installer will need to use mounting brackets to angle the panels correctly for maximum yield.

  • Material: While solar panels can generally be installed on any roof, there are some exceptions. Metal roofs are often the best to install a system on, while tile roofs can be quite fragile and generate an extra cost.

8. Does the temperature during the day affect production results? Does hotter weather equal greater energy production?

Many people believe that hotter weather produces more energy, however, it is much the opposite. The hotter the day, the less energy that your system will produce. This is because a solar system converts LIGHT into energy and not HEAT.

A solar panel has an optimal temperate range that is best for producing the greatest amount of energy. As the temperature rises out of this optimal range, the production efficiency begins to decrease. Excessive heat is therefore detrimental for a solar panel’s production. Instead, the days that you will find you produce the most energy are on sunny, cooler days.

9. Is there any maintenance involved in having a solar system on my roof?

Despite the rumours, solar panels are NOT self-cleaning. So, like any other appliance or installation around the home or office, we do ask that you occasionally inspect and perform a small amount of maintenance on it. You can find a copy of our maintenance manual here.

10. Do I need developmental approval to have a solar system installed?

Generally speaking, you shouldn’t need to get council or planning approval when having a solar system installed, however, there are a few instances in which you may. If you live in a council strata development, then getting approval from the body corporate may be required, or if you live in a heritage listed home then you will need to get council approval. If you are unsure whether or not you should be receiving approval, you can ask your solar installer or local council for guidance.

11. Will I still be using energy from the grid?

Yes. Your solar system only generates energy when there is sunlight, and when this energy is generated it needs to be used immediately. At night time when there is no energy being produced, your system will draw energy from the electricity grid so that you can continue to use the appliances within your home. Should you have a battery system however, it can store energy produced by your system to use when your system is not generating power.

Still unsure?

Solar systems are all individually tailored to ensure maximum power generation for your household. If you have any further questions, please do not hestitate to give us a call on (08) 8297 3422 today, to speak to one of our qualified installers.

The Most Common Electrical Issues Around The Home

The Most Common Electrical Issues Around The Home

Electricity should be seen as a tool and the ways that we can use it are endless. But we can’t forget just how dangerous it can be when installed incorrectly, not properly maintained or used without care. Issues such as flickering light, tripping circuit breakers, electric shocks and much more, all indicate possible points of concern with your home’s electrical circuit. If you are experiencing any of the following issues, please call us today to have them inspected to ensure your’s and your family’s safety.

1. Tripping Circuit Breakers

Many people are unsure about the difference between safety switches and circuit breakers within their home. Circuit breakers provide protection for your WIRING and ELECTRICALS within your home by opening the circuit when a fault is detected. They do not provide personal protection from electric shock. There are three main reasons why your circuit breaker might trip within your home.

One of the most common reasons is that you are ‘overloading your circuit’. This is an electric circuit that is carrying more current than what it can handle, running the risk of causing a fire or an injury through overheating. For example, in one outlet you may have a powerboard plugged in, that is overloaded with cords and adaptors that, simultaneously, are drawing too much current. Your outlet/powerboard may not be able to handle such a large current and therefore runs the risk of overheating. Your circuit breaker would trip to avoid any overheating, minimising your chances of getting hurt.

Your circuit breaker may also trip due to a ‘short circuit’. In your homes electrical circuit, this occurs when a live wire touches a neutral wire, resulting in high current and therefore triggering your circuit breaker. There are many reasons why these two wires can come into contact with one another. Your attachments in your home may be extremely old and deteriorated, possibly have been chewed through by an animal or pest causing them to become loose, or caused by a faulty appliance.

Ground faults are another reason why your circuit breaker may be tripped. A ground fault is when electricity finds an unplanned path to ground and are often caused by damaged wiring or faulty/old appliances. They often occur in ‘wet’ areas of the house such as the kitchen or the bathroom.

Sometimes faulty circuit breakers can be installed unknowingly. These circuit breakers can trip at lower current ratings than what are specified. If this were the case, your circuit breaker might be tripping quite frequently and need replacing immediately.

If your circuit breaker trips, identify why it may have happened and eliminate the chances of it happening again. If you cannot find the cause, or it electrically more advanced than simply unplugging a device, call an electrician today.

2. Frequent Power Surges

Power surges in the home can be caused by a number of reasons, most of them within your control. They occur when there is an interruption to the normal flow of electricity within the home, or when there is a sudden influx of electricity into the system.

Internal power surges  are most common, and may include:

  • Power hungry devices such as refrigerators and air conditioners being switched on.
  • Faulty wiring.

External influences include:

  • Animals chewing through wiring
  • Fallen tree limbs touching power lines.
  • Lightning strikes

While the actual surge of electricity is generally extremely quick, the damage that it can have on your appliances can last a lot longer. Frequent power surges can damage your electrical devices componentry and reduce their life expectancy.

To protect yourself from power surges in the home, you need surge protectors installed. There are three different types of surge protectors you can choose from:

  1. Portable surge protectors: These plug into an outlet and protect the device that is plugged into them. While cheaper than other options, these run the risk of only being able to be used once.Screen Shot 2019-02-13 at 1.27.09 pmScreen Shot 2019-02-13 at 1.38.49 pm
  2. Powerpoint surge protectors: These surge protectors are installed within the powerpoint itself, and therefore must be fitted by a qualified electrician. They protect anything that is plugged into that powerpoint. 2025SFWE
  3. Main switchboard: Installed by a licenced electrician at your switchboard, these surge protection devices (SPDs) protect your entire circuit from a power surge. Should a fault occur, they switch off the power to your entire home keeping you and your family safe. PO_OvervoltageProtection_PIS_1

It’s important to remember that these are all different types of surge arrestors, and are used for different types of surges and in most cases, two types will be safest for your property. The primary type is used for large surges such as lightning strikes, to protect your motors or non-sensitive equipment. The secondary type can be utilised to protect your electronics.

3. Buzzing/Humming Outlets and Switches

A number of issues in the home can cause outlets and switches to buzz – some are normal and some may be an indication that there is something else going on. Generally, there is no need to worry, but if you are concerned, then call us today to complete an electrical inspection.

Dimmer switches work by ‘chopping up’ the current between the switch and the light, so rather than actually dimming the light itself, it flickers rapidly enough so that it appears dim. It is this ‘chopping up’ of the current that can produce vibration and therefore cause a buzzing noise. High-quality dimmer switches should have a filter to reduce this buzz, but if the noise intensifies it may be another issue. It may be a sign that you have an LED or CFL globe installed that is being controlled by a dimmer built for an incandescent globe. Your globes may also flicker if this was the issue. It could also be a sign of an overloaded switch. Dimmer switches are rated according to the maximum wattage that they can handle. If you have a globe in your fixture that’s wattage is higher than what the switch can control, then you may hear some buzzing and need to upgrade your switch.

If an outlet in your home is buzzing, then it may be a sign of an overload or bad wiring. The wires in your home may have become loose, which can cause them to hum. This is more prevalent in older homes with outdated, old, or worn out wires, but there may also be a chance that they have been installed incorrectly. To see whether it is the outlet itself, or possibly an overload, try plugging in a different appliance to see if the outlets continue to buzz. Only do this if it is safe to do so, but if you are in doubt, please do not touch it. Instead, call us today to organise an inspection. Any loose wires or connections within the home shouldn’t be ignored, as larger, more serious issues can result.

4. Electric Shocks

An electric shock occurs when a person comes into contact with an electrical energy source. This electrical energy then flows through the person’s body and causes a shock. Exposure to an electric shock can cause anywhere from no injury at all, if you’re lucky, to serious health issues and even death. It’s important to distinguish between whether you have experienced an electric shock, or simply a static shock.

Static shocks are simply the build up of a negative electric charge on the surface of an object. Negative charges are carried by paricles called electrons, which are found in all matter. Most electrons are packed within matter, but sometimes they can sit on the surface. If two objects come into contact with one another, the electrons on the surface will move to the material with the greatest bonding strength or pull (such as your body). This movement of electrons is the ‘zap’ that you experience, which is completely harmless.

Static shocks are nothing more than annoying, but electric shocks are a much larger cause for concern. Depending on the duration and intensity of the shock, you may experience:

  • Tingling.
  • Burns to the skin or internal tissues.
  • Loss of consciousness.
  • Loss of breath.
  • Interruption to the natural rhythm of the heartbeat, causing it to beat out of rhythm or not at all.

There are many situations within your home where you could experience an electrical shock. These include:

  • Faulty appliances.
  • Damaged or frayed electrical cords and wiring.
  • Electrical appliances coming into contact with water.
  • Incorrect or deteriorated household wiring.
  • Downed powerlines or lighting strikes.

If you are certain that you are experiencing electrical shocks within your home, do not hesitate any longer. Call us today to organise a site inspection before it worsens. Electricity is extremely useful within the home, but it can also be extremely dangerous.

5. Higher Than Average Electrical Bills

If you have noticed that your electrical bills have been higher than average, there may be a few reasons why. Certain things that can cause higher electrical bills include:

  • Keeping appliances plugged in and turned on when not in use.
  • Increased electricity rates.
  • Leaks in your hot water system.
  • New appliances, such a larger televisions, can use a lot more power, so be sure to purchase appliances that are ‘energy smart’.

Higher electricity bills may also be the result of old appliances or wiring within the home. Older appliances can degrade and lose their efficiency over time causing them to become large consumers of electricity. It’s important to maintain your appliances and update them when necessary to avoid paying too much for electricity. Faulty or degrading wiring can also consume larger amounts of power as it deteriorates, just to provide appliances with the necessary amount of power. It’s important to distinguish what may be causing this spike is power usage so that you can amend it. If you are unsure, call an electrician today.

I’m experiencing issues with my electricals, now what?

If you are experiencing any of the issues mentioned above, or possibly something else, please do not hesitate to give us a call. Your safety is paramount to us. Most electrical issues are typically quite detailed and as electricity can be extremely dangerous when not handled correctly, it’s important that you let a professional perform the necessary actions. Please call Green Efficient Living today on (08) 8297 3422 for any electrical related issues.

 

 

 

Why Should You Have Your Air Conditioner Serviced?

Why Should You Have Your Air Conditioner Serviced?

Having your air conditioner serviced before the hot weather hits is smart for two reasons. Not only does it mean that you will be prepared for when the temperature starts to rise, but it also means that you will beat the rush of people trying to get theirs serviced during summer.

What Is Done During A Service?

During a scheduled routine service, a Green Efficient Living technician will complete a number of checks on the outdoor unit and indoor unit to ensure its compliance and that it is operating as it should.

The first thing that our technicians do will ask you whether or not your system is functioning properly. Have you heard any noises lately? Has it been playing up or not running as it normally would? Etc.

The return air will be then taken out and checked over, during which time our technicians run your system to inspect the outdoor unit. They will get the pressure readings, check electrical voltages and currents and ensure that there is no debris on the rear coilers of the unit.

After the service of the outdoor unit, they will then get into your roof to inspect that all electrical terminals are still tight, that the ductwork does not have any imperfections such as rips and that the main condensate drain isn’t blocked. During this time they will also inspect all zones by turning them on and off to ensure that they are all opening and closing as they should.

An example of dirty air conditioner filters covered in dust
Our technicians attended a service call for a faulty air conditioner and upon further inspection, the issue was simply dirty filters.

Can You Service Your Own Air Conditioner?

There are basic maintenance jobs that you can do yourself as the homeowner, such as cleaning the filters and ensuring that the outdoor unit stays unrestricted (see our post on that here). But when it comes to a complete annual service of your unit before using it again, this MUST be left entirely to the professionals. The smallest of attempts at servicing your own air conditioner can lead to serious unit damage or even electrocution!

Why Should You Have Your Air Conditioner Serviced?

The easiest way to understand exactly why you need to regularly service your air conditioner is for the same reason that you regularly service your car. You do not drive your car unserviced until it breaks down beyond repair and you are forced to buy a new one. Instead, you service it regularly to AVOID any serious breakdowns – an air conditioner is much the same.

There are many reasons why having your air conditioner professionally serviced is important:

1. It improves energy efficiency and saves you money on your electricity bills

Without periodic maintenance, your air conditioner will find it hard to run in prime condition. When this happens, it has to work a lot harder and consume more energy which in turn costs you more on your electricity bills! Avoid paying more by having a professional complete a service on your air conditioner to ensure that it is running as efficiently as possible.

2. It improves air quality

When your air conditioner isn’t working efficiently, it cannot properly filter the air is distributed into your home. An air conditioner that is running in perfect conditioner successfully filters out pollutants, pollen, dust and allergens, meaning the air that you and your family are breathing is cleaner and safer.

3. It extends your unit’s lifespan

Regular servicing and maintenance will extend the lifespan of your unit for all of the reasons mentioned above. It faults are left undetected, they can cause serious issues for your system in the future. These issues may result in costly repairs or even a unit replacement! However, by servicing it regularly you are increasing your system’s lifespan and keeping it running in perfect working order for many more years to come.

The professionals at Green Efficient Living recommend having your unit serviced annually, even if it is not showing any signs of faults or issues. To book your annual service, call us today on (08) 8297 3422.

Note: Green Efficient Living is currently holding their annual Pre-Summer Service Sale! Take advantage of our discounted prices and have your unit serviced before the hot weather is here!

Why Should You Swap To LED Lighting?

LED Lighting strip under floating cabinets in a kitchen

Why Should You Swap To LED Lighting?

We’ve heard it all before: ‘change your globes to LED globes!’ But why? Are LED globes really as good as they say? Is there really any point spending time and money switching your existing globes to LED ones? Why are LED globes so good?

LED stands for Light Emitting Diode and is an increasingly popular alternative to your standard halogen, incandescent, or CFL (Compact Fluorescent Lamp) globes. If you haven’t already substituted your current globes for LED ones in your home or business, then your lighting would already contain one of the other three options mentioned.

What Are Your Lighting Options?

Firstly, let’s look closely at the other traditional options. Not too long ago, you had the choice of incandescent globes, halogen globes, CFLs and LEDs however, it has been predicted that halogen lights will disappear from Australia within the next two years as the country shifts towards more efficient and environmentally options. Australia began the phasing out of poor-performing incandescents in 2007, requiring homeowners and businesses to instead install energy efficient lighting to cut greenhouse gas emissions. Then in 2010, the Australian Government then enacted a ‘Minimum Energy Performance Standard’ law ensuring only the highest performing products are to be available. However, these standards relating to incandescents, halogens and CFLs still do not meet the same energy efficiency as LEDs.

CFLs

Your CFL bulbs are reasonably cheap to buy but can cost you more to run over time. They can also wear out faster if put in a light fitting that is switched on and off constantly, such as your bathroom or kitchen. They can’t be used outside very often as they don’t work well in extreme heat or cold and can take a little longer to reach maximum brightness. They do, however, have a slightly longer lifespan than incandescents and halogens, and are slightly more energy efficient.

They work via a chemical reaction known as fluorescence. The tube contains mercury that becomes ‘excited’ as electricity is passed through the system. When the mercury begins to settle, it gives off light.

Image showing a CFL Globe
An example of a traditional CFL globe.

Incandescent Globes

Incandescent globes were simple and cheap to manufacture and therefore purchase, but besides that and their bright light, the pros stopped there! Their lifespan is extremely short and they lose around 90% of their energy to heat. However, despite this, they were probably the most common light bulb that you had in your home currently until the government placed a heavy regulation on the sale of incandescents operating at a certain energy efficiency.

Incandescent globes have the classic ‘light globe’ shape. They contain a mental filament made of tungsten inside, that acts as a bridge for electricity to flow over. As the electricity surges, the filament heats up and it begins to glow giving off light. This is also the reason why the globe gives off so much of its energy as heat, and why it is often hot to touch straight after it has been turned off.

Image showing incandescent globes
An example of traditional incandescent globes. These are the most common globes that you might recognise.

Halogen Globes

Halogen globes are a type of incandescent light, however, are stronger, designed to withstand higher pressures than incandescents and are around 30% more efficient. But while they are labelled as ‘low voltage’, they still use approximately 35W to 50W per globe, so they are still not an efficient choice to have within the home. They can also become quite hot and can, in some circumstances, becomes quite hazardous.

Image of typical halogen globe
An example of a traditional halogen globe.

LEDs

LEDs are often the more expensive option to purchase per globe compared to their more traditional counterparts, however, they are longer lasting and much cheaper to run! Using around 75% less energy than CFL globes and lasting two to three times as long, when we look at LED globes in comparison to the other options, it is clear to see just they’re the obvious choice!

An globe displaying LEDs
An example of an LED globe.

What Are The Benefits Of LEDs?

Energy Efficient

The first and most beneficial reason is that they are extremely energy efficient and will save you money on your electricity bills. They use less power (watts) per unit of light (lumens) and can, therefore, provide up to around 100 to 200 lumens per watt. In contrast, CFL globes use around ten times the amount of Watts as LED globes. Incandescent globes also lose a lot of their energy to heat rather than light (90-95% to be exact), so they are extremely inefficient to run. For reference, a 60W (watt) incandescent bulb will only put out as much light as an 8W LED bulb! It doesn’t really make sense to put these globes in your space, when 95% of what you are paying for, you are not able to utilise. So while they might seem the perfect option upfront due to their low cost, they are considered a much more inefficient option than LEDs. In a typical Australian household, lighting makes up for about 7-10% of your electricity bill (sa.gov.au). So when you think about how much you rely on lighting in your home to live comfortably, ensuring that you have the most energy efficient lighting is a small change that you can make to save big on your bills.

Graph showing the average energy usage in Watts per Lumens for typical globes
Above you can see a comparison of the average energy usage in Watts per Lumens of typical globes. You can see that the brighter the globe (lumens) the more energy it consumes (watts), as you would expect. However, LEDs remain the lowest option!

Longer Lifespan

Another positive is that they have a much longer lifespan than other traditional globes. To put it into perspective, an average lifespan of an LED globe is between 15,000 to 50,000 hours, while halogen globes last a mere 1,000 to 5,000 hours. So the need to consistently purchase and change your globes lessens when you purchase LED globes. That means less money spent on always buying new globes!

Chart showing the overall lifetime costs of different globes
A 10W LED bulb would cost $39 in total to buy and run over 10 years. Over the same about of time, five 42W halogen globes would be needed at a cost of $148. or two 12W CFL bulbs at a cost of $48.

Environmentally Friendly and Recyclable

LED lights are non-toxic, better for the environment and your family and currently the greenest choice on the market today! CFL globes, along with fluorescent tubes, contain a small amount of mercury, a requirement of 5 milligrams according to Australian Standard (environment.gov.au). While this amount of the toxic mercury does means that handling CFL bulbs requires more care and precautions, the short-term nature of the potential exposure when broken does not create a potentially large risk. Gloves should be worn to clean up a broken or no longer working CFL bulb and the remnants should be placed in a plastic bag and given to a nearby waste or disposal centre to avoid the mercury from entering the environment. To find a centre near you, head to www.recyclingnearyou.com.au. Incandescents and halogen globes cannot be recycled due to the fact that they contain a Tungsten filament that cannot be reused, but they may be able to be taken to the same recycling centres as CFLs. The best way to dispose of these globes is to simply wrap them in a few layers of paper and throw them in the garbage, not the most environmentally friendly option, or call your local disposal centre to see if they will take them. LED globes, however, do not contain any hazardous materials, are not made of glass and are completely recyclable. So if they break or stop working, simply wrap them in paper and place in your recycling bin! Safe on your family and the environment!

More Flexible Lighting Options

LEDs are considered to be ‘directional’ light sources, meaning that they can be designed to emit light in a specific direction. Those with LEDs installed in their homes can look forward to focused and concentrated light because of this, and a more energy efficient result. Incandescent and CFL globes emit light in all directions, meaning that they are often radiating heat and light in directions where it is not needed, wasting energy and your money. Having the ability to focus your lighting in your desired direction, means that your lights do not have to work as hard to illuminate the space, and therefore your energy bills stay lower.

LEDs can withstand frequent switching on and off making them perfect for outdoor flashing light displays, sensor lighting, or in areas such as the kitchen, or bedroom where lighting is commonly turned on and off. As well as this, LEDs are able to to be successfully dimmed. Most traditional lights can only be dimmed to 30% of their light output before they stop working, but LEDs are able to operate at a mere 10% of their light output (when used with LED suitable componentry).

LED Lighting strip under floating cabinets in a kitchen
LED lighting used in a kitchen as seen on The Block 2016.

Durability and Safety

As previously mentioned, LEDs are much more durable and able to withstand harsh weather conditions due to their ability to operate under extreme temperatures and low voltages.  This enables you to place them anywhere around your home, indoors or outdoors, as the cold, wind, rain and extreme heat will not affect them. LEDs also do not contain any filaments or glass enclosures but are instead mounted on a circuit board with soldered leads. This makes them virtually unbreakable and able to withstand shocks, vibrations and external impacts. Safety is no concern with LEDs as they do not give off heat and contain no harmful chemicals.

LED Lights used underneath outdoor stair railingLED Lighting can be used outside due to its durability.

While different globes work for different situations, it’s obvious to see why LED globes are the clear choice to have within your home or business. With halogens and incandescents slowly being phased out, the only competition that still stands are the traditional CFL globes. Despite CFLs still being a good choice, the benefits of LEDs in comparison far surpass those of CFLs. If you are looking to have new lighting installed in your home, call Green Efficient Living today on (08) 8297 3422 to see what we can do!

Micro Inverters VS String Inverters

Installation of a Fronius String Inverter

Should You Get A String Inverter or Microinverters?

If you are considering having a solar PV system installed on your home or business, one of the key decisions that you will have to make is whether to have a string inverter or micro-inverters installed.

Inverters play a crucial role in the production of solar energy, so it pays to choose the right one. When the sun hits the solar panels, the light energy is transformed into direct current (DC). Unfortunately, your house or business runs on alternating current (AC) and therefore an inverter is needed. The inverter converts the DC into AC to make it accessible to your home or business.

There are two main types of inverters that your solar power system can use – string inverters and microinverters. Depending on certain factors such as your location, energy needs, energy usage patterns, amount of shading on your home, one type of inverter may be better suited to your system than the other. Green Efficient Living is here to help you decide which one is better for you.

String Inverters

A string inverter, or central inverter, is a large box that is generally located on the wall on the outside of your home, or close to your fuse box/electricity meter. There is usually one, maybe two, string inverters on each residential solar installation and they operate in series array or series circuit.

Installation of Fronius String Inverters
Fronius String Inverter

Microinverters

Microinverters perform the same role as string inverters, however, they are much smaller and designed to sit underneath each individual panel. They accept the current of each panel individually rather than a series of panels collectively. This ultimately means that there is the same number of inverters on your roof as there are panels.

Installed Micro Inverters on a tin roof.
Green Efficient Living installation of Micro Inverters on a residential roof.

So Which One Is Best?

There are many factors that need to be considered when deciding which inverter type is right for you. Your solar installer will have to look at which direction your roof is facing, how much shade it is receiving, your energy production goals and much more, before determining which inverter is right for your system. Independent of those factors, however, there are major differences between the two types of inverters.

System Performance and Energy Output

One advantage of microinverters is that there is never a single point of failure that can affect the whole system. As microinverters operate independently of one another, they result in a more effective output overall. This means that if an outside influence such as shading from dirt and grime, overcast weather conditions, overgrown vegetation, etc. cause an effect on one panel, the entire system’s performance is not compromised.

However, systems with string inverters risk losing their entire system’s maximum performance if one panel becomes affected or fails. As they are connected in series, if one panel is affected by outside influences (mentioned above) or performance failure, then your entire system will not function to its maximum potential. The rest of the unaffected panels outputs will drop to match.

Diagram showing the difference in output between microinverters and string invertersEnphase Diagram Comparing Microinverters (left) to String Inverters (right)

Winner = If your roof receives shading, or you’re in an area that receives a lot of cloud cover, then microinverters are your best option for maximum production. 

Safety

When having microinverters installed, there is also a reduced safety risk as they operate at a much lower voltage than string inverters. As string inverters accept the voltage of the entire system, you can have up to 600 volts DC on a domestic system, or more, running through your home. If this voltage were to arc, your system will fail, a large bang may occur, and in worst cases, a fire may result! This is why it is paramount that you find a reputable installer to ensure that your system is installed to the highest quality.

Winner = Microinverters have been labelled as the safer option as they eliminate the need for this high voltage wiring. 

Flexibility and Expansion

String inverters have a limited number of panels that they can accept, so depending on how many panels are already in your system, you may find it hard to add more at a later date. Microinverters allows for increased expansion in the future – all that you will need to do is add more panels and more inverters. Their independent operation also means that you are not limited when it comes to their orientation either. You can add panels on any side of the roof, at independent angles, and still yield the same amount of electricity. However, with string inverters, all of your panels must be connected in the same orientation and facing the same way.

Most string inverters, however, do have two independent inputs, or mmpt’s. This means that two arrays of panels can work independently of one another via the same inverter.

Panels positioned all over roof of home and garden shed.
Green Efficient Living installation of a system with Enphase microinverters. Notice the panel positioning all over the house and the garden sheds.
Screen Shot 2018-07-24 at 2.24.01 pm
The overall panel production for the above image. Notice the difference in overall production between each panel thanks to the installation of microinverters.

Winner = Microinverters allow for your system to be expanded in the future as well as a lot more flexibility with your panels positioning and orientation.  

Cost

While prices may vary between states, installers, manufacturers, etc. statistics show that microinverters are still the more expensive option.

However, cost does not only cover the initial expense up front but also the overall savings that you will receive throughout the life of your system and the speed at which you recuperate your initial expenses. While string inverters may not be a larger initial expense, your overall production will be greater with microinverters and therefore may result in larger savings on your bills in the long run.

Winner = For an initial lower cost, string inverters are the better option. However, for long-term investments, the upfront costs of microinverters will be recouped over the lifespan of the system. 

Maintenance and Repair

One large advantage of microinverters is their panel-level monitoring. While the homeowner is not able to see the individual values of production, your technician has access to each inverters performance via a system monitoring program. This means that they can easily monitor how your inverters and panels are performing without the need to perform an inspection. String inverters can only let your technician monitor the system’s overall production.

However, as microinverters are located on the roof of your home, maintenance and repairs can become a lot more costly and time-consuming. If a panel or inverter develops a fault, your technician will have to get onto the roof to have access to your inverters and panels.

A string inverter, on the other hand, is more cost-effective and timely to repair as it is located on the wall of your home down on the ground. This means that your technician avoids the lengthy process of having to get onto your roof to repair the fault.

Winner = There are definitely pros and cons to both. System and fault monitoring are easier in microinverters, however, maintenance and repair are easier in string inverters. Microinverters also have the added ease of service should it ever come to needing to claim your performance warranty.  

VERDICT

Both string inverters and microinverters have their pros and cons. While it may seem that microinverters are the clear winner, this is not always the case. Should your home and roof receive minimal shading, your energy usage be predominantly throughout the day, and you have no intentions to expand your system in the future, then there is no reason why you should not use a string inverter. However, if your roof is one that receives shading in certain areas throughout the day, then microinverters may be the better option.

Your solar installer should be asking you a number of questions during your consultation to distinguish which inverter will benefit you the most.

String Inverters Microinverters

System Performance

✔

 

Safety

✔

 

Flexibility & Expansion

✔

 

Cost

✔ Upfront Costs

 

✔ Long-term Investment

 
Maintenance & Repair ✔ Easier to service

 

✔ Easier to Monitor

 

Solar Shading – What Is It and How Do You Deal With It?

Up-close image of a residential solar installation being partially shaded by trees

What Is Solar Shading and How Can You Deal With It?

We all know by know that solar panels produce electricity from the sunlight. So it makes sense that when there is shade cast upon them, they produce less electricity. It would seem fairly obvious that the power output produced by the panels is reduced proportionally to the amount of area that is shaded – this isn’t true.

Most domestic solar systems include anywhere between 5-30 panels, and most of the time these panels are connected in a ‘string’. Smaller systems may only have one string while larger scale systems may have more. We find it easiest to explain a string of panels as a string of Christmas lights. Electricity flows from one bulb to the next, lighting up the entire string of lights. However, when one bulb blows, the whole string of lights fails. This is the same for a solar system connected in strong. Even if a small amount of shade falls on just one cell in the panel, the output of the whole string of panels is reduced for as long as the shadow remains. Instead, it is because when one panel fails, it begins to become an energy consumer, rather than an energy generator. The shaded panel begins to draw power from the other panels, who in turn are not producing their optimum or maximum output.

There are many different factors that can result in solar panel shading. Shade from overgrown vegetation (trees and plants), cloud cover, dirt, bird feces, etc. all cause an effect on overall power production. During the design and layout stage of having your solar system installed, your installer should have taken a look at your roof from above, using technology, and be taking into account many factors such as optimal sun direction. They should be designing your system to sit in a location where it is not shadowed for half of the day, e.g. behind a chimney or a tree.

Fortunately, while there aren’t many ways to completely eliminate solar shading, there are ways to manage it.

https://www.civicsolar.com/support/installer/articles/string-layout-shade-mitigation
https://www.civicsolar.com/support/installer/articles/string-layout-shade-mitigation

How To Manage Solar Shading

1. Regular cleaning of your panels

Cleaning your panels every three or so months ensures that they stay free of any on-surface shading that may occur. Running a hose from the top of your roof, directly down to wash away leaf litter and debris that can get caught on top of your panels. Using a squeegee or cloth to gently clean the more tough dirt and grime is fine, but scourers and high-pressure water cleaners are not.

2. Be aware of vegetation

Be aware of overgrown plants and trees that may cast a shadow on your panels. Make a point observing this every three months or so, to ensure that your panels remain in maximum sunlight for as long as they can. Also, remember to observe this at all times of the day, to see how they are affected as the sun moves.

3. Micro Inverters

Microinverters are just as the name suggests, however, they are much smaller and designed to sit underneath each individual panel. They perform the same function as a string inverter, however, they accept the output of that panel only, rather than a series of panels collectively. This maximises your total production output because if one panel fails, the others are not compromised.

They are slightly more expensive upfront, but as time goes on, the product price is dropping. Microinverters allow for an expansion of your system, so there are no restrictions when it comes to your system’s future and they are often labeled as the safer choice due to the minimised voltage running through them.

4. DC Optimisers

DC Optimisers are similar to microinverters in that they are also located on each individual panel. However, DC Optimisers, or power optimisers, are used in systems where a string inverter is involved. These DC Optimisers work with the string inverter to enable the maximum production from each panel individually, despite the fact that the panels are connected in a string. When a panel becomes shaded and its power output differs from the unshaded panels, the optimisers correct ‘mismatch’ of energy production between each panel by allowing it to function at its Maximum Power Point (MPP), and then converting that energy to the optimum voltage and current for the string inverter.

https://singingvegan.com/solar-power-best-worst-customer-service/
https://singingvegan.com/solar-power-best-worst-customer-service/

All of these factors should be looked at by your solar installer and they should be informing you of the best choice for your situation and requirements. Green Efficient Living solar installers use a number of programs to look at all of the factors required to provide you with a system that will work best for you.

To speak to one of our solar professionals today, call (08) 8297 3422 or fill out a request form on our contact page.

Questions To Ask Before Buying An Air Conditioner

Return Air Grilles above a Kitchen

What Questions To Ask When Buying An Air Conditioner

These days, air conditioners come in many sizes and with many different upgrades and new developments. There are also different companies and installers out there who can sometimes offer vastly different quotes for the same system. So how can you be sure that you are being quoted the best system for you? It’s important to always ask questions of your installer before approving any work. Here are just a small list of questions to ask your installer when buying an air conditioner, to ensure that you are getting the best system for your home and lifestyle.

1. What type of air conditioner do I need?

There are a number of reasons why one type of air conditioner may be better suited to your home than another. What type of climate do you live in? For example, evaporative air conditioners work brilliantly in drier climates, but not as effectively in tropical, humid climates. Are you looking for a system that will cool one room only? If so, maybe a high wall split is best, or possibly an air conditioner with zoning capabilities. It is important to discuss all of your needs and desires with your installer to ensure that you are getting the most accurate system for your situation and location. Make sure that you are prepared with all of the information before you meet with them.

2. What size air conditioner do I need?

As explained in our previous blog (here), the right size air conditioner is dependent on a lot of factors. For example, are you looking to cool your whole home or just a few rooms? is your home open plan living? How many windows does your home have? It is important that your installer asks all of these questions before they offer you an exact system. Ensuring that your installer has made a trip to your home, or has a copy of your housing plan so that they can do a load calculation and offer you the correct size for your space. This will ensure that you are being quoted the best unit based on power, efficiency and cooling capacity.

Home Air Conditioner
An example of a plan drawn up by Green Efficient Living. We use exact measurements of your home to ensure that the system is the correct one for you.

3. What new features or technological additions do I require?

These days, air conditioners can be tailored to meet your exact requirements and desires thanks to modern technology. So make sure that you consider which extras you may want or need to personalise your system. Do you require a remote control for ease of use, or are you okay walking to the touchpad on the wall each time? Are you after zoning so you can only cool specific rooms at certain times? Maybe you are looking to have a system that can be controlled from an app on your phone? If you aren’t sure of all of the additions that can come with a system these days, be sure to ask your installer. Let them know which features you may need and work from there. Be aware that most of the time, technological additions can add to the price of the system.

4. What is my budget?

The best thing to do is have an idea of how much you are able to spend. This will let your installer know what type of system they can offer you and what optional extras may be available. Always get more than one quote to get an average idea of how much you should be spending.

5. What is the energy rating of the system?

These days, air conditioning systems should chew through your energy bills. In fact, your installer SHOULD be designing you a system that will be the most cost effective and energy efficient for you to run. This will ensure that your unit lasts longer and save your money in the long run.

 

e3-energy-rating-label-star-rating-heating-cooling-air-conditioner
The star rating for air conditioners is determined differently to other appliances. For air conditioners, the measure of energy efficiency is the Energy Efficiency Ratio (EER) for cooling and the Coefficient of Performance (COP) for heating.

 

6. Who will be doing the installation? Does the company use contractors to install their work?

This is an important question to ask because it lets you know how many companies you will be dealing with and the integrity of those companies. The company that you purchase the system through may use contractors to install it, rather than employing their own technicians to carry out the installation themselves. This addition of an extra party can result in many issues such as unnecessary added costs, communication breakdown, hassle, warranty issues and unexpected poor quality of work and service.

7. If they do use contractors, are the installers qualified to handle warranty repairs and/or servicing?

Green Efficient Living employ all of their own technicians that are all certified installers (Cert. III). This means that they are all fully qualified to handle all installations, warranty repairs and servicing systems of all sizes. Many companies use Cert. II qualified installers that are not qualified to handle all warranty repairs and servicing and can only work on systems under 18kW. For the reliability and quality of your home or business’s system and to ensure that all warranties remain valid, it pays to ask how qualified your installers are.

8. Does the company also provide maintenance services?

It is important to know whether the company who installs your air conditioner also provides servicing and maintenance services. This will ensure that should any warranty issues occur further down the line, that the company servicing your system is familiar with it and has records of it. Green Efficient Living provides comprehensive service and maintenance services to all of our clients and we make that we keep them updated when their next service is due.

9. What is the total cost?

This may seem like an obvious one, but be aware that sometimes the quote that you are being provided may not include all charges. Does the quote include labour and installation charges, delivery fees, etc? Make sure that they provide every cost openly and honestly and in writing so that you aren’t surprised when you receive the invoice.

10. What documentation will I be receiving?

Before the installation date, you should receive a detailed quote and contract. After the system has been installed, you should receive all manufacturers and installers warranty information, detailed maintenance information and compliance certificates. Before purchasing a system, always do research on each company and obtain multiple quotes. It may take a little longer, but the system that you end up with will be far more reliable.

If you are after a new installation, or the service or upgrade of your current one, call Green Efficient Living today on (08) 8297 3422.

Small Tips To Save On Your Power Bills

Overloaded Powerboard

Are you finding that your power bills are consistently too high and you’re unsure why? There are a few small changes that you can make around your home that won’t cost you an arm and a leg but can make a dramatic difference to how much you are spending on energy. The main reason that most households have a high energy bill is because they don’t completely understand their energy usage, and as Green Efficient Living are passionate about educating people to be more energy smart, we have decided to compile a list of ways to easily reduce your energy usage around the home.

STANDBY POWER

Did you know that even though you’ve turn your television off after you’ve finished watching it, it is still consuming energy? It’s called ‘Vampire Power’, ‘Phantom Load’ or most commonly ‘Standby Power’ and has a significant impact on household bills. According to the Department of Industry, Innovation and Science, standby power makes up approximately $100 of energy consumption costs per year for the average household. Plasma and LCD televisions are large consumers of standby power and Energy Rating states that every television that is sold or supplied within Australia must display an Energy Rating Label. This will tell you how much energy the television uses per year and gives you a star rating allowing you to compare the energy efficiency of different models.

But the biggest way to reduce your standby power costs is by unplugging your appliances, or turning off at the switch, once you’ve finished with them. Take a look around to see if any of your appliances have standby lights or are warm even when not in use, and make an effort to correctly turn them off so that your house isn’t consuming energy unnecessarily.

How power boards affect energy usage

LIGHTING

The lighting around your home can be a culprit for many reasons and there are a few ways that you can be smarter when it comes to your lights.

  • The most obvious way to save energy is to turn off the lights in rooms that are being used – don’t believe the myth that is uses more energy to turn lights on and off every few minutes. This is rarely the case and only applicable if you have large spotlighting or OLD fluorescent lights that take longer to warm up once switched back on.
  • Avoid using your heat lamps in your bathroom if you are only after light, because while the difference in energy usage isn’t too vast for short periods of time, it can add up when the bill arrives.
  • While energy efficient fluorescent globes may be slightly more expensive to purchase than your traditional incandescent globes, they use 80 percent less energy, are longer lasting, and are therefore the much smarter choice when it comes to saving energy around the home. They are perfect for areas where the lighting is needed for longer periods of time, such as the kitchen and living areas, and have a much longer lifespan, so the number of times you will need to change them decreases. Switch to save!
LED Lighting's affect on energy bills
Image by Justin Sullivan/Getty Images

LARGE APPLIANCES

Dishwashers, washing machines and clothes dryers are some of the biggest culprits of energy wastage around the home because people don’t understand how to use them efficiently.

  • When using your dishwasher, ensure to use the economy setting if it has one, and only turn it on when it is full. This is much the same as the washing machine, in that it should only be used once you have a full load, and all clothes should be washed in cool water to save energy heating it up.
  • If you can, avoid using your clothes dryer and line dry instead. But if you need to, make sure that your clothes have been wrung out as much as possible to minimise the time needed in the dryer.
  • As your fridge is continuously running, always make sure that the door is sealed tight and that the unit has at least a 5 centimetre space surrounding the unit to allow air to circulate freely. If you can, set the temperature of the fridge at a consistent 3 to 5 degrees Celsius, and -15 to -18 degrees for the freezer.

HEATING AND COOLING

  • For Reverse Cycle Air Conditioners, keep the rooms that are not in use closed off, to keep the rooms that you are using cooler, and always keep your air conditioner filters clean.
  • Always close your windows and blinds in hot weather to reduce the amount of thermal ingress from outside. This will ensure that your air conditioner does not have to work as hard to keep the room cool.
  • In winter, close doors to rooms that you aren’t using to keep the heat in the rooms that you are and try to use extra blankets, wheat bags, or hot water bottles when sleeping to avoid running your heating in your bedrooms.
  • Keep your fan speeds consistent and always use the right settings for the right occasions.

For more tips on how to be energy smart when it comes to your air conditioner or heater, see here.

WATER

When attempting to cut energy costs, many people don’t necessarily look to their water consumption as a solution, but there are many ways that changing your water usage patterns can help shave dollars off of your bills. According to Energy.Gov water heating is the second largest energy expense in your home and therefore can result in large changes to your spending.

  • In the bathroom, changing your shower heads to energy efficient ones can save up to $200 a year on your energy bills.
The higher the water rating, the less energy is used
Before buying an appliance, look at their water rating to see how efficient they are. The less water that they use, the less heating is needed, and the more energy is saved.
  • Making the effort to have much shorter showers is also a way to cut energy costs, less water used = less energy needed to heat it.
  • When boiling water, opt for the kettle rather than the stovetop and keep lids on when cooking to reduce cooking time
  • Fix those leaky taps!

As you can see, there are many small and cheap ways to reduce your energy bills by a large amount. Start implementing these tips into your everyday life and watch the savings pile up! For further information on how to save energy, call Green Efficient Living today on (08) 8297 3422.