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New South Wales · Air conditioning

Sydney aircon, across a New South Wales summer

A guide to air conditioning in Sydney and the rest of New South Wales in plain words, published by Dotto from the official sources listed at the foot of each page.

The band runs across Sydney from Penrith in the west to Bondi on the coast, ochre to sea-grey. Each numbered point is one of the six guides; the suburbs are a way to find them, not a claim about any place.

Two sets of rules sit behind every air conditioner in New South Wales. The state licenses the people who install and service them, including the electrical wiring that comes with the job, and under national rules only licensed technicians can handle the refrigerant inside. Around those rules sit the state’s discount on efficient units, the strain hot afternoons put on the grid, and NSW Health’s advice for staying well in the heat. The six guides take each in turn.

A concrete arch bridge on the left crossing a wide blue river, with moored boats, waterfront homes and trees on the far shore under heavy white cloud.
The Parramatta River at Gladesville Bridge, Sydney. Photo by kennG on Pixabay

Six points on the band

Start with whichever question is in front of you.

  1. Point 1 · PenrithHeat and health in NSW

    Who NSW Health says is most at risk in hot weather, the four heat-related illnesses, and where an air conditioner fits.

  2. Point 2 · St MarysPreparing a home for summer in NSW

    NSW Health’s plan for before, during and after hot weather, quoted whole.

  3. Point 3 · BlacktownHot afternoons and the NSW grid

    Why the grid strains on hot days, and how to use less power only where it is safe.

  4. Point 4 · ParramattaNSW licences for air conditioning work

    Which NSW licence covers the refrigeration and the electrical side, and how to check one.

  5. Point 5 · StrathfieldFrom quote to installation in NSW

    The order an installation follows, from quotes and paperwork to the declaration you sign afterwards.

  6. Point 6 · BondiNSW energy schemes for air conditioners

    The Energy Savings Scheme discount and the Home Energy Saver loans, as published at 8 October 2026.

Four things to know first

The licence can include the wiring

In NSW, an air conditioning and refrigeration licence also allows the associated electrical wiring work, such as disconnecting and reconnecting components and minor wiring changes. Some licences carry a condition excluding that electrical work, so it is worth asking.

The discount comes off the quote

The Energy Savings Scheme’s air conditioner incentive is an upfront discount in the installer’s quote. As at 8 October 2026, NSW lists it at up to $550 for a new 6kW system, or up to $560 to replace an old unit with a 6kW split system, and calls those amounts indicative. That page was last updated before the scheme’s rules changed on 7 September 2026, so check the current amount in a quote.

Sign before work starts

The incentive’s nomination form has to be completed before installation begins; NSW says you won’t be reimbursed for work already completed.

In the heat, triple zero first

NSW Climate and Energy Action says to always call triple zero (000) if you or anyone around you has a heat-related medical emergency.

Questions to put to an installer

Each of these follows from the NSW rules, and the guides explain the reasons.

  • Can I see your licence? NSW suggests checking that a tradesperson’s licence is valid on the NSW Government’s Contractor and Tradespeople Register.
  • Does your licence carry a condition excluding the associated electrical work? NSW’s licence page describes licences issued with that condition.
  • Do you offer the Energy Savings Scheme incentive, and is the discount included in this quote? NSW suggests asking each installer exactly that.
  • Where should the indoor and outdoor units go? NSW suggests working out the best spot with your installer.

NSW’s advice is to compare quotes from more than one installer, and it notes that your installer can help you choose the right size for your room or home. A licensed installer who has seen the rooms you want to cool is the person to ask about your own home.