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Reduce Air Conditioning Costs During Summer

As a Queenslander, I know all about hot weather and sweltering summer days. Actually sweltering days at random through Spring and sometimes Autumn too at times. If you live in Australia’s northern states, it helps to enjoy the hot weather.


But even those of us that do, and I do love summer, it still means keeping cool. The air conditioner is a popular choice for many, but the runnings costs can drastically increase your electricity bills. No fun! So I wanted to share some tips with you on how you can reduce air conditioning costs this summer (or at least keep them from blowing out of control).

24 Degrees Celsius

24 is the recommended temperature for air conditioners all year round as it is pleasant both during the cold weather when you want to maintain a comfortable warm indoor temperature, as well as keeping you cool during summer. Resist the temptation to increase or decrease the temperature.

Turn On Before the Heat Hits

Something that surprises many is that the most effective way to reduce air conditioning costs at home is to turn on your air conditioner before the hot weather has kicked in. I know I personally used to wait until I couldn’t bare it anymore and then turn it on, but have since learned that this means your air conditioner needs to work hard to cool an already hot house, thus using lots more energy.

Instead, turn it on early in the day when you know it is going to be extra hot and this will mean the air conditioning unit does not need to work so hard to maintain that comfortable 24 degrees Celsius. Check out for a graph representing the efficiency at different temperatures, you will clearly see why 24 is the best.

Leave It Off

If it isn’t that hot or if you aren’t at home, consider leaving your air conditioner off. Sure, they leave our house feeling lovely and cool, but some days we can get by without them, by turning on a fan or keeping cool with lots of water and light clothes instead.

Reduce air conditioning costs during summer

If you don’t really need it, don’t turn it on and you will save yourself a small fortune on your electricity bills.

Efficient Unit

If your air conditioner is already installed, you have little say over this now but if you are shopping for a new one, it is worth spending a little more to get an air conditioning unit that is higher in energy efficiency. This means less running costs which will save money on home expenses in the long run.

Depending on your unit, you may also be able to get an energy saving assessment done on your existing unit. I actually have no idea what this consists of but when we had it done, the electrician installed some quick fitting that helped reduce the running costs of our air conditioning units (yes, our house has 3).

In our household we are normally pretty good with our air conditioner use, and only use it if we really need to, although last summer I was heavily pregnant so for surviving summer pregnancy, it became my new favourite thing for a few months.

If you want other tips on how to save money on electricity bills.

Do you use an air conditioner often during the warmer weather?


Tuesday 23rd of January 2018

Great Tips on how to save money on running the Air Conditioner! We also always recommend people use a programmable thermostat so the AC always automatically shuts off when not in use.


Friday 21st of April 2017

These are awesome tips for reducing air conditioning costs! Air conditioners can use a lot of energy to run and so finding one that is energy efficient can make a big difference with the usage and save money on your electric bill! Thanks for sharing this!

Darcy Whittell

Tuesday 4th of April 2017

I really appreciate your thoughts and I glad that you shared your experience with us. Because some times we misuse this things.


Thursday 6th of October 2016

great article well written. I live in Western Australia I have evaporative and reverse cycle air conditioning we also have solar power s that helps during summer. 24 we run our system at 26 degrees the evap is a lot cheaper to run but dosent work very well in humid weather

Karin @ Calm to Conniption

Sunday 13th of December 2015

We have ducted aircon here and I love it. We have solar too which helps and hardly ever have it on at night time. We stick to the 24 (well we have it on 25 because I thought it was that, I must change it) rule.