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Hot Water Cost

Hot water cost calculator

Your estimated out-of-pocket cost for a new system, after the rebates that apply in your state.

Last checked

Your cost after rebates

Three choices. The estimate updates as you go.

Where is the home?
What are you replacing?
What would you install?

Estimated out of pocket

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Installed price
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Rebates and discounts
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    An estimate from industry-reported 2026 price ranges, not a quote. Your installer's quoted price already includes the federal STC discount. Eligibility for each rebate is set by the program. Check your state's rules

    Got a quote, or about to? Check what it should include

    How the estimate is worked out

    We start from the installer-reported 2026 price range for the system you choose, then take off each rebate or discount that applies to your state, the system and what you're replacing.

    • Victoria: the Victorian Energy Upgrades discount comes off first, using the program's indicative figures (for a heat pump, $630 replacing electric or $560 replacing gas; for solar, $910 or $700). The Solar Victoria rebate then covers 50% of the price that remains, and it's capped: up to $1,000. Households pay a minimum contribution of $200, so the estimate never drops below it.
    • New South Wales: the Energy Savings Scheme discount for a heat pump, up to $640 replacing electric or up to $330 replacing gas. Those are maximums NSW calls indicative, so the estimate runs from no discount to the full amount.
    • South Australia: not included, because REPS has no fixed amount. How to find offers
    • Queensland: not included, because the state appliance rebate is closed.
    • WA, Tasmania, the ACT and the NT: not covered yet, so no state or territory incentive is included.

    What the estimate leaves out

    Moving from gas to electric can need new electrical work, and a tight or elevated site can add labour. The locally made Solar Victoria cap of up to $1,400 isn't modelled; if your product qualifies, your cost will be lower than shown. And the calculator doesn't check eligibility: the Solar Victoria rebate has income, property and ownership tests that it assumes you pass.

    Pricing a gas replacement in Victoria? From 1 March 2027, a gas system in an existing home that reaches end of life has to be replaced with an efficient electric one. The 2027 rule.

    Each rebate line in the calculator says whether it's an official program figure. Prices are industry-reported ranges. When you have real quotes, check what they include.