Air conditioning is a must in Nowra. HOWEVER, when the energy bills hit your inbox, it’s easy to feel a little sting of regret every time you turned it on. One of the most common questions we get from customers at Chilko AIR is:
“What’s the most energy-efficient way to run my air conditioner?”
In this article, you’ll learn 8 practical, proven ways to run your air con smarter—so you stay comfortable without burning through cash. These tips work whether you’ve got a split system, ducted air, or anything in between.
- Set It Right: 24°C Is the Sweet Spot
Cranking your AC to 18°C feels refreshing on a scorching day, but every degree lower than 24°C can increase your running costs by around 10%.
Pro tip: In summer, set your thermostat to 24–25°C. In winter, aim for 20°C when heating.
- Use the Timer & Sleep Mode
Your system doesn’t need to run all night (or all day). Most modern air cons come with a timer or sleep mode function.
Set the timer to shut off 30–60 mins after you go to bed
Use sleep mode so the system gradually adjusts as the night cools
This small tweak can save you hundreds per year.
- Close Off Unused Rooms
Why cool the spare bedroom if no one’s in there?
When your air con is running, shut doors to unused areas so the system doesn’t waste energy trying to cool the entire house. If you’ve got a zoned ducted system, only turn on the zones you’re actually using.
- Clean Your Filters (You’d Be Surprised)
Dirty filters make your system work harder. And when it works harder—it costs more to run.
At Chilko AIR, we recommend:
- Cleaning filters every 3 months
- Replacing or servicing them annually, especially before summer
If you’ve never cleaned your filters before, don’t stress—we can show you how.
- Seal the Gaps
Air leakage around windows and doors is like throwing money out the window—literally.
- Use draft stoppers
- Seal gaps in window frames
- Close blinds or curtains during the day to reduce heat gain
It all helps your air con work less—and your energy bills stay lower.
- Get an AC System With Inverter Technology
Not all air cons are created equal.
Inverter ACs automatically adjust their speed based on the room temperature, meaning they don’t constantly turn on and off (which uses the most power).
If your unit is over 10 years old, upgrading to an inverter system can cut your energy use by up to 40%.
Need help choosing the right system?
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- Don’t Ignore Regular Servicing
You wouldn’t drive your car for 10 years without a service, so don’t do it to your air con.
An annual service is recommended across the board as it:
- Boosts efficiency
- Extends your unit’s lifespan
- Helps you avoid costly breakdowns (especially in peak summer)
Book a service with our local Nowra team, and we’ll get your system running like new.
- Create shade to Stop the Heat (and Keep in the Cool)
One of the cheapest and most effective ways to keep your home cooler in summer is to shade the windows that get the most sun—especially those facing north and west.
While external shading (like awnings) works best, simply drawing your curtains or blinds during the day can make a noticeable difference. And in winter? Do the reverse. As soon as the sun goes down, close your curtains to trap the warmth inside. You’ll reduce heat loss and make it much easier (and cheaper) to warm your home.
The Bottom Line
Saving money on your power bill doesn’t mean sweating through summer or freezing in winter.
With smart usage habits and a little help from your local AC experts, you can have both comfort and control over your energy costs.
Want a Free System Health Check?
We’ll come out, inspect your unit, show you where you might be losing efficiency—and give you clear, honest advice on what to do next.
Call us on 0468 373 620 or Book online
At Chilko AIR, we don’t just install air conditioners.
We teach you how to use them smarter—because that’s what a real local expert does.