Cooling

5 Mistakes to Avoid When Buying An Air conditioner

Thinking about buying an air conditioner? It’s a serious purchase for your home that can cost a significant sum upfront and over the course of its lifetime.

 This is why it’s so important to make the right choice and avoid the traps that many others fall into. Here are some of the 5 most common mistakes that people make when buying an air conditioner. 

Buying the Wrong Type of Air Conditioner

Buying an air conditioner is a long term purchase with ongoing running and maintenance costs. They aren’t the kind of thing that should be purchased on a whim. If you are looking at buying an air conditioner, it is best to do some research to try and figure out which one will be best for your situation. 

Ducted air conditioners are efficient and can be designed for your specific premises, but they tend to have the highest upfront costs and require the most significant modifications to your home for installation. Next in line are wall-split systems. These are common for residential purpose, involving an outdoor compressor and an indoor evaporator unit that is hung up high on the wall. Wall-split systems can be used to cool or heat single rooms or larger areas. They are relatively efficient, require only minor modifications to your home and have less significant upfront costs. 

From here the options tend to get substantially less efficient. The next most efficient options are window and wall units. These are essentially the same, except window units are installed in the windows, while wall units will need a larger hole cut in the wall. They feature the compressor and evaporator in the same box and can be useful for cooling smaller spaces. They tend to have a lower purchase price than the previously mentioned air conditioners, but they are less energy efficient. 

Portable air conditioners are the final option and they are only recommended for occasional use or for cooling very small spaces. This is because they are inefficient and have high running costs. Portable air conditioners are stand alone units that have an exhaust hose that is installed in the window. Their small size and ease of installation makes them a good choice if you move frequently. 

Buying the Wrong Sized Air Conditioner

It’s very easy to buy the wrong sized air conditioner. Some people think that a smaller system will be more efficient–after all, smaller things use less energy, right? Others think that a larger air conditioner will be better for cooling. 

The reality is that both of these options will be less effective than one that is the right size. This is because small air conditioners will have to go into overdrive just to keep up, while options that are too large won’t have properly timed cycles. This will cause them to go on and off repeatedly, which is less efficient. 

Calculating what size you need for your home can be complicated and people often make mistakes that can cost them in the long run. You can use these calculations to get a general idea, but it is best to get a professional to do it. They can take each factor into consideration when calculating which size is best for your home. 

Only Considering the Upfront Costs

Cheaper is better, right? Unfortunately, this is not the case with air conditioners. A cheaper option may be good for your wallet now, but when you consider the long term costs of electricity, maintenance and repairs, you might end up much further behind. 

It is important to select the air conditioner that suits your situation. Although portable air conditioners and window units might seem like good value because of their lower upfront price, you may find that they will cost you much more in electricity over their lifespan. 

Not Looking at the Energy Efficiency Rating

The energy efficiency rating can be helpful when buying an air conditioner. It gives you a quick and visual way to compare two products and see which one is more efficient. It’s important that when you use the system, you make sure that you are only comparing like for like products. 

By using the energy star system and looking at the outputs and inputs, you can run calculations to figure out whether a more expensive, yet efficient air conditioner will actually be cheaper in the long run.

Planning to Put Your Air Conditioner in the Wrong Spot

Let’s face it, air conditioners are pretty ugly. Most people try to hide the huge metal boxes away so that they don’t ruin the aesthetics of their home. While this can be fine in many places, you need to be careful about where you put it.

Air conditioners need space and plenty of ventilation to work effectively. If they are cramped in by walls or there is a lot of shrubbery around them, your air conditioner may not be able to function properly. This is because hot or cold air will pool around the unit, making it work even harder to cool down or heat your home. This can send your electricity bills sky high.

Another common placement error is putting an air conditioner in the sun in hot climates, and conversely placing the unit in the shade when heating is commonly required. In both instances, poor placement makes the unit work harder to achieve the desired outcome, and may make the unit more prone to breakdowns. It is best to understand how and when you plan on using the system, as this will impact the placement of the system.

Avoiding the common air conditioner mistakes

There are so many aspects to consider when you buy an air conditioner, that it is easy to overlook something important. By making sure that you purchase the right type of air conditioner in the right size, you have already won half the battle. Thinking about the long term costs, energy efficiency and placement will help to make sure you buy an air conditioner that works well for your home.

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Heating

Heating Your Home

It's never to early to think about keeping our homes warm. There are many different ways to heat your house, each with its own strengths and weaknesses. Developments in technology, as well as changes to electricity and gas prices have influenced the market, making new options more competitive with traditional heating methods.

These days, some of the most common home heating systems include reverse cycle air conditioners, gas heaters, electric heaters, fireplaces and underfloor heating. It is hard to declare an outright best heating method as there are several factors to consider. Some of the most important aspects of each technology include their upfront cost, their long term running costs, ease of use, control, danger, localised pollution and environmental impact.

Reverse Cycle Air Conditioners

Reverse cycle air conditioners are just like your everyday air conditioner, except they can warm up your home as well. Instead of using energy to create heat, they use energy to capture heat from the outdoor air and bring it inside. These days they are quite efficient at heating in most climates, however many models don’t function effectively at extremely low temperatures, so if you live in a cold or mountainous region, other choices may be better for heating.

While reverse cycle air conditioners do tend to have a high up front cost, you also need to take their dual use as a cooling unit into account. Many Australians deem air conditioning a necessity for the summer, so a reverse cycle system might not work out as expensive as it seems. These systems can also save space in your home, by needing just a single unit instead of a heater as well as your air conditioner.

The running costs of a reverse cycle air conditioner will depend on where you live and your electricity prices. If your home has solar panels, they can also help to bring down the cost. In fact, a University of Melbourne study found that reverse cycle heating was cheaper to run than gas heating in every city that they tested.

The thermostat in reverse cycle air conditioners allows you to adjust and keep your home at the perfect temperature, which means you don’t waste energy on overheating. As far as the environmental impact is concerned, it really depends on your energy source. Much of Australia is powered by coal, which has a significant environmental impact. Those who have solar panels may be able to alleviate some of this, but unless you have battery storage, you will generally be heating your home at night when the panels aren’t working.

Gas Heaters

These heaters can be a good option if you are in a location that has a gas connection. They are relatively efficient and have long been seen as good value for money. Despite this tradition, rising gas prices and changing technologies have led the above-mentioned study to indicate that reverse cycle air conditioners are now cheaper to run.

Users also have to be careful because gas heaters produce carbon monoxide, which can be deadly, and water, which can cause mould in your home. Flued heaters tend to take care of this issue, because they have a pipe that transports the waste outside. Unflued heaters leave their fumes inside the room, so ventilation is important for keeping safe.

Gas heaters tend to have lower upfront costs than reverse cycle air conditioners, however they can’t be controlled as precisely. While air conditioners may be more efficient heaters, it is hard to compare the environmental impact, because it depends on the local power source.

Electric Heaters

Electric heaters are portable and good for small spaces or occasional use. They work by using a heating element to convert electricity to heat. Radiant heaters reach high temperatures and often pose a significant fire danger. They function by emitting heat, which travels through the room and warms people and objects directly.

Electric heaters on the whole are cheaper upfront, however their poor energy efficiency means that they have high running costs. They also aren’t suitable for heating more than just a single room or person. Because of their poor efficiency, they have quite a high environmental impact.

Fireplaces

As one of the most cosy ways to heat a home, fireplaces are often chosen for their ambiance as much as their heating abilities. They can have relatively high upfront costs, because a chimney will need to be installed for the smoke. The long term running costs vary widely. Those who live in rural areas may be able to get firewood for free. For others, it can be quite expensive.

Fireplaces are actually quite efficient as long as a slow-combustion wood stove is used to burn well-seasoned firewood. Assuming that your firewood is sustainable and that your home is otherwise powered by coal, heating your home with firewood can be better for the environment than other methods. Despite this, it is unsuitable for densely populated areas, because the smoke adds to local pollution.

Underfloor Heating

These systems have either heating cables or water pipes set in the floor. Electricity or hot water flows through them and warms the floor through conduction. The floor then radiates heat to the cool surfaces of the home. Because underfloor heating doesn’t create much air circulation, a room becomes comfortable at lower temperatures than other methods.

Underfloor heating can be expensive to install in existing homes, so it is often best to consider for new builds. It is a relatively efficient way to heat a home and is comparable to reverse cycle air conditioning in both running costs and environmental impact.

The Best Home Heating System

Each of these heating methods has their own unique advantages. A fireplace can be great if you have free access to firewood, but not so much in the city. Underfloor heating is comfortable and efficient, but the costs to install it in an existing home can be prohibitive. Gas heating is a reasonable all-round choice, but not everyone has access to it. And whilst reverse cycle air conditioners may have high upfront costs, these are offset by their cooling capabilities. They are also one of the most efficient and easy to control choices. In the end, the best heating for your home will all depend on your unique situation.

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Handy Tips

Operating Tips For Extreme Weather

Always test run your air conditioner a few weeks before the start of summer or winter and make sure it is cooling or heating sufficiently. If the air conditioner needs servicing, it is advised that you do this before the summer or winter season arrives.

On a hot day you will need to:

  • Follow any conditions specified in the installer’s quotation.
  • Always start the air conditioner early in the morning and keep the house/office cool. If you try and start the air conditioner in the afternoon when the house/office is already very hot, it may take a while to cool down.
  • Keep outside doors and windows closed.
  • Keep doors to unconditioned areas (eg laundries, bathrooms etc.) closed.
  • Note that any doorways on the return air path will need to be kept open, which may mean that doors to an unconditioned hallway will need to be kept open.
  • Keep windows, which are exposed to the sun, shaded preferably externally (e.g. shutters), but alternatively by internal blinds or curtains.
  • Only switch on the maximum zones specified in the quotation. Switch off other zones. If your installer/dealer has not specified what area they have allowed for, then they have probably only allowed for the main living area. Seek advice from installer/dealer.
  • Operate the fan on high speed. On humid days a low fan speed may be more comfortable.

NOTE: Always allow the necessary amount of fresh air into rooms.

On a cold day you will need to:

  • Follow any conditions specified in the installer‘s quotation.
  • You can leave air conditioner running overnight, but lower the set point 2-4 degrees from your normal setting to help save electricity. This will prevent the house/office from becoming too cold overnight and thus enabling the air conditioner to warm the house/office quicker when you raise the temperature set point back to your usual setting.

OR

  • Start the air conditioner a couple of hours earlier than you normally would in the morning.
  • If outside conditions are very cold (approx. 7°C or lower) supplementary heating may be used such as electric or gas heaters to complement & speed the heating up.
  • Keep outside doors and windows closed.
  • Keep doors to unconditioned areas (eg laundries, bathrooms etc.) closed. Note that any doorways on the return air path will need to be kept open, which may mean that doors to an unconditioned hallway will need to be kept open.
  • Keep internal blinds or curtains closed.
  • Do not use CONT FAN when selecting fan speeds.
  • Only switch on the maximum zones specified in the quote. Switch other zones off. If your installer/dealer has not specified what area they have allowed for, then they have probably only allowed for the main living area. Seek advice from installer/dealer.

NOTE: Always allow the necessary amount of fresh air into rooms.

Resetting the air conditioner

Switch the air conditioner off at the main power switch. The main power switch is occasionally located adjacent to the outdoor unit. Wait about 15 seconds after the air conditioner has turned off before turning the main power switch back on. You may need to wait up to 5 minutes for the compressor to turn on. If the air conditioner still does not seem to work, it may be faulty. A frequent need for resetting should be investigated. Call the installer if the air conditioner is less than 12 months old or contact the ActronAir® Service Department.

Cleaning Air Conditioner Filters

Air conditioner filters require regular cleaning or replacing (depending on the type). As filters accumulate dust they block up, reducing airflow and the cooling or heating capacity of the air conditioner. In addition some types lose filtration efficiency the dirtier they get.

Some filters are located in hinged filter frames attached to the return air grille. These filters are typically residential filters. They are generally of the washable type and should be cleaned by gently washing with water. If water by itself is not cleaning the filer sufficiently, use a mild detergent. These filters usually require very frequent cleaning. It is recommended to clean the filter monthly.

Filter Light Flashing

If you find your filter light continuously flashing, press the on/off button once and it should reset for another 200 hours of running time. Before clearing this, please clean filter as a precaution.

New Filter / Material

In the event that your filter material needs replacing please contact a filter supplier.

Noise levels

You need to consider where the outdoor unit is going to be located. As a general guide do not locate an outdoor unit near neighbouring bedroom windows. There are specific regulations that apply. You will need to rely on the advice of your installer/dealer in determining the appropriate location for your air conditioner.

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