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Wagga Wagga, New South Wales

Air conditioning and heating in Wagga WaggaLong heatwaves in summer, heavy frosts in winter.

An installer for Wagga Wagga

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Wagga Wagga needs serious cooling and serious heating. The 2009 heatwave brought 13 consecutive days above 38 degrees, and AdaptNSW counts around 50 nights a year below 2 degrees. Fog and heavy frosts are common in winter, and that changes how a reverse cycle system behaves on a cold morning.

What's different about Wagga Wagga

Hot, dry summers

Bureau of Meteorology figures for Wagga Wagga AMO (1941 to 2020) put January's mean maximum at 31.9 degrees. Summer afternoons are dry, with 3pm humidity around 30% (29% in January). The record is 46.1, on 4 January 2020.

Long heatwaves

In the early 2009 heatwave Wagga Wagga recorded 13 consecutive days over 38 degrees. That's a long stretch for any air conditioner, and for the people relying on it.

Cold, foggy, frosty winters

July's mean minimum at the AMO is 2.8 degrees, and AdaptNSW says the city sees around 50 cold nights below 2 degrees a year. Fog and heavy frosts are common, and the record low is -6.3, on 21 August 1982.

Climate zone 4

The National Construction Code's climate zone table lists Wagga Wagga as zone 4: hot dry summer, cool winter.

Houses on the gas network

85.5% of occupied homes in the Wagga Wagga council area were separate houses at the 2021 Census, and Australian Gas Networks names Wagga Wagga among the regional centres its gas networks serve.

Heating through fog and frost

A foggy, frosty morning is exactly when a reverse cycle unit has to defrost. Mitsubishi Electric says frost forms on the outdoor unit when it's cold and the humidity is high, and that heating stops for up to 10 minutes while it clears. You may see white vapour rising off the outdoor unit: that's the defrost, not a fault.

That pause doesn't make reverse cycle a poor choice here. It just means the system should be sized for those mornings, with its heating capacity checked as closely as its cooling. If your home also has gas heating, gas heater servicing is a separate job for a licensed gasfitter.

Older and unflued gas heaters

Seeley says unflued gas heaters raise pollutant levels indoors and need open windows or doors. The ACT Government recommends replacing an unflued gas heater immediately because of the carbon monoxide it produces, and Better Health advises replacing any that are more than 10 years old. Better Health also says all gas heaters should be serviced at least every 2 years by a licensed gasfitter. Headaches, dizziness or nausea that ease when you leave the house are a warning sign: get outside, and have the heater checked before it's used again.

Cooling through a long heatwave

A run of 38 degree days tests the unit and the people inside. The Energy Rating calculator suggests setting cooling to 25 to 27 degrees in summer, and says each degree lower could add 10% to your electricity bill. Closing blinds and doors on the hot side of the house helps the system keep up.

Wagga's dry summer air also suits evaporative cooling, which Seeley says performs best in hot, dry climates. It only cools and needs windows open while it runs, so you'd still need heating for those 50 cold nights.

Licences, the ESS and signing a quote

In NSW, installing, maintaining or servicing an air conditioner needs a licence or certificate, plus an ARC licence for the refrigerant. Check the installer on Service NSW's licence check before you sign.

Wagga Wagga households may be able to get the NSW Energy Savings Scheme's upfront discount on an energy efficient air conditioner, where local installers offer it. The discount comes through an Accredited Certificate Provider that's independent of the NSW Government, and the nomination form has to be signed before the install starts. Gas space heaters installed from 1 July 2026 aren't eligible.

One more thing on signing. NSW Government guidance says that if you ask for a quote and the supplier negotiates a deal with you there and then, the agreement can be unsolicited, which brings a 10 business day cooling-off. If they leave the quote and you get back to them later to accept, it isn't. Our cooling-off guide explains it.

What you can do, and what you can't

You can

  • Clean the air conditioner filters as the manual says, with the power off.
  • Let the unit finish defrosting on foggy mornings before deciding it's broken.
  • Keep the outdoor unit clear of leaves and garden clutter.

Leave to a licensed installer

  • Servicing or replacing a gas heater, which is for a licensed gasfitter.
  • Refrigerant work, under an ARC licence.
  • Electrical connections, under the right NSW licence.

What we'd do

If it were our Wagga home

We'd put in reverse cycle sized for the foggy July mornings as well as the long summer heatwaves, and we'd read the heating figures before the cooling ones. If we had an old unflued gas heater, we'd replace it rather than keep servicing it. And we'd take any quote away to read before signing, so the decision stays ours.

When you're ready, tell us your job and postcode. Licence-checked installers near Wagga Wagga who specialise in that work will see it, and your contact details go to the one who takes it. If it's not taken near Wagga Wagga within 48 hours, installers in other parts of NSW may see it.

What this work looks like

Photos from real jobs in Melbourne, to show what the work looks like. They aren't from an installer near you.

A new walkway built through a roof space before the ducts go in
A new walkway built through a roof space before the ducts go in. Sep 2022. A job in Melbourne.
A rooftop evaporative cooler on a new estate home
A rooftop evaporative cooler on a new estate home. Aug 2022. A job in Melbourne.
Underfloor heating pipe laid on insulation panels
Underfloor heating pipe laid on insulation panels. A job in Melbourne.

More job photos

Questions people ask

Why does my reverse cycle stop heating on foggy mornings?
It's most likely defrosting. Mitsubishi Electric says frost builds on the outdoor unit when it's cold and humid, and the unit pauses for up to 10 minutes to clear it.
Is reverse cycle or gas better for heating in Wagga Wagga?
Both can keep a house warm. The ACT Government says gas heats quickly, while reverse cycle has much lower running costs and also cools in summer. Our reverse cycle vs gas guide goes deeper.
What should I set my aircon to in a heatwave?
The Energy Rating calculator suggests 25 to 27 degrees for summer cooling. Each degree lower could add 10% to your electricity bill.

Ready for the right installer to take a look in Wagga Wagga?

Your postcode and three quick questions. Licence-checked local installers who specialise in your kind of job see it, and the one who takes it gets in touch to quote.

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Read next

  1. 01Reverse cycle air conditioningHow reverse cycle heats and cools, which type suits your home, and what to check for winter.
  2. 02Reverse cycle or gas heating?Efficiency, cold mornings, carbon monoxide and the Victorian gas rules, in plain terms.
  3. 03Gas heater serviceHow often to service a gas heater, the warning signs, and who's licensed to do it.
  4. 04NSW Energy Savings SchemeHow the ESS discount works on a new or replacement air conditioner, and what's left out.
  5. 05Signed at home? Your cooling-off rightsWhen a heating or cooling deal signed at home can be cancelled, and how to do it.
  6. 06What it costs to run an air conditionerThe method: input power times hours times your rate, and what pushes the number up or down.

Where this information comes from

We don't publish prices. Every home is different, so an installer's written quote is the only real number. How we write and check these pages.

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