Heat Pump Cost Australia (2026): Hot Water and Reverse Cycle Prices, Rebates and Running Cost

Two entry points, not one

Australian search demand splits cleanly, and a page that blurs them serves nobody:

• Hot water — replacing electric resistance or gas with a heat pump water system. Victoria is where the money is, because two schemes stack.
• Reverse cycle — heating and cooling air. The Victorian discount is set by what you remove: up to AUD 1,610 when you replace a non-ducted gas space heater, but up to AUD 5,530 when you remove or replace a ducted whole-of-home gas heater, with bill savings of about AUD 460 and AUD 1,140 a year respectively. Full detail on the reverse cycle rebate page for Victoria.

What each state actually pays, as of 5 November 2026

Victoria stacks three things on a hot water swap: the Solar Homes rebate (up to AUD 1,000, or AUD 1,400 for a qualifying locally made product), the VEU discount (up to AUD 560 off upfront when replacing gas), and a further AUD 400 locally-made rebate. The official page states the combined figure directly — up to AUD 1,560 upfront, AUD 1,960 total saving. Details on the Victoria hot water rebate page, and the replacement rule that starts on 1 March 2027 on its own page: Victoria’s 2027 gas hot water rule.

New South Wales runs its support through the Energy Savings Scheme, and the government page publishes no fixed amount: the discount is created by the accredited installer and applied at point of sale. Two installer sites quote a cap near AUD 640 and product conditions, but the official page does not confirm a figure, so we do not publish one.

Queensland currently lists no state heat pump rebate on its home energy page — only the federal STC applies. Third-party sites say the previous Climate Smart Energy Savers rebate has closed, but no official closure notice has been found, so we state the absence, not a date.

Federal support is a certificate calculation, not a flat rebate: STC count depends on postcode zone, system size and the deeming period, and the model must appear on the Clean Energy Regulator’s register. Anyone quoting a single national “STC rebate” number is quoting one zone at one certificate price.

What installation actually costs

The only installed-cost range published by an Australian government source we have verified is NSW’s: AUD 2,000–6,000 for a heat pump water heater, saving AUD 200–800 a year against the system it replaces. The NSW page publishes no midpoint, and we do not invent one — the table at the end of this page shows a dash in the Typical column for that reason, not an oversight.

Two things move a real quote away from that range: what you are replacing (a gas system with flue work is a different job from swapping a failing electric tank), and which incentive the installer can claim against it, because certificate schemes are quoted as a net price. So treat any single figure — ours included — as the start of the conversation, and use the payback calculator with your own quote and tariff to get a number that actually belongs to your house.

Running cost: what the official pages say

Three verified figures cover the running-cost question, and each comes with its scope:

• Hot water, NSW: AUD 200–800 a year saved versus a traditional system (NSW Government).
• Hot water, Victoria: typically around AUD 400 a year saved on the VEU program (Victorian Government).
• Space heating, Victoria: about AUD 460 a year saved replacing a non-ducted gas heater, about AUD 1,140 a year replacing ducted whole-of-home gas — the reverse cycle page has the full discount structure.

Your tariff, your hot water usage pattern and what you are removing decide where in those ranges you land. Anyone promising a precise saving before seeing your bills is guessing.

State directory, as verified

We publish a state row only after reading the issuing agency’s own page, so the blank cells above are “not checked yet”, not “checked and empty”. Queensland is the one state we have verified as a flat no.

Four things to check before you sign a quote

1. Whether the price shown is before or after the incentive is applied.
2. That the exact model is on the relevant register or approved-product list, not just in the right category.
3. Whether the person installing is accredited to claim. Victorian pages say retrospective discounts are typically not possible, so this has to be settled before the work.
4. The warranty term. Victorian products need a minimum 5-year warranty to qualify.