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What size air conditioner do you need for your home?

The Australian heat can be unbearable in the summer time, and good quality air conditioning is the best way to stay comfortable when things get sweltering. One thing that confuses a lot of potential buyers is the size of air conditioner they will need. You don’t have to be confused anymore, because this guide will go through all of the details and give you a clearer picture on what you might need for your home.

 

Introduction to air conditioning

The first step in finding the right sized air conditioner is to understand what their unit of measurement is. In Australia, the output of air conditioners is measured in Kilowatts (often expressed as kW). Kilowatts are one thousand watts, which is a measure of energy over time.

 

Why it is important to get the right size?

The short answer is efficiency. Although it might seem that bigger can only be better, that is not the case with modern air conditioners. Instead, air conditioners run optimally when they are sized to the conditions. An energy efficient air conditioner is designed to run in cycles that will slowly cool your house, instead of doing it rapidly.

 

If your air conditioner is too big, often times it will cool your house down quickly and then turn off, before it goes through the entire cycle that it is designed for. Your house will begin to warm up, then it will turn on again, quickly cool down your house and then turn off again. This whole on-again, off-again cycle can end up using much more power than a properly sized air conditioner would.

 

If your air conditioner is too small, it will be in constant overdrive as it tries to keep up with the large space. It should still be able to keep your house cool, unless it is way too small, but it won’t be running the way it is designed to. This constant running at a high level will mean that it is not working efficiently and will cost you significantly more in electricity.

 

What factors affect the size of air conditioner that I will need?

Air conditioning is much more complicated than it may seem at first. Obviously, the size of your house is important in determining your air conditioning needs, but there are also many other factors that can have a surprising amount of influence on the size of air conditioner that will best suit your home.

 

The amount of insulation in your house is a key consideration, because it can affect your house’s ability to maintain its temperature. If your house is well insulated, you likely won’t need as much heating or cooling capacity compared to one with poor insulation.

 

Another obvious factor is the climate that your home is in. The tropical and sub-tropical areas of Australia tend to have much greater demands than the cooler regions of Australia.

 

Some other factors that influence the size of air conditioner that you will need include what type of lighting you have, how much lighting you have, your type and quantity of ducting, the number of windows and their efficiency, the heat transfer between the walls, the number of skylights, the amount of people in your home, the type of foundation your home has, how much the heat transfers through, as well as several other factors.

 

As you can see, it’s quite complicated.

 

How do I calculate the size of air conditioner that I will need?

The three main ways to calculate your air conditioning needs are:

–          With a formula

–          By using an online calculator, or;

–          By getting a professional to visit your home to calculate things precisely

 

Using a formula to calculate your air conditioning needs

Using a formula to estimate your air conditioning needs can be quick and easy, but it’s also very rough and doesn’t take many of the important factors outlined above into consideration. It’s a good way to get a general idea of your needs, but if you’re after a truly accurate understanding it’s probably best to use one of the other two methods before you commit to anything.

You should be able to find formulas via a Google Search, but please understand that these vary greatly and are not the recommended way in which to determine your air conditioning requirements.

Using an online calculator to figure out your air conditioning needs

If you use an online calculator, it will give you a more accurate estimate than the above method, but you will also have to take more factors into consideration. Fairair (www.fairair.com.au) have a good calculator that will help you to figure out the amount of kilowatts you will need.

 

Using a professional to figure out your air conditioning needs

The most accurate way to find out the air conditioning capacity that you will need for your home is by getting a professional to come in and calculate it. They have years of experience, which they can use to get the most accurate estimate of your air conditioning needs. They will take each factor into consideration and help to make sure that you have the perfect sized air conditioner for your home.

 

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