One of the biggest advantages of installing a heat pump hot water system in Australia is the generous government rebates available. Between federal incentives and state-based programs, you can typically reduce your upfront cost by $1,000–$2,200 — sometimes even more. Here's a complete breakdown of every rebate available in each state and territory in 2026, and how to claim them.
Federal Small-Scale Technology Certificates (STCs)
Every heat pump hot water system installed in Australia is eligible for federal STCs under the Small-Scale Renewable Energy Scheme. These certificates are created based on the amount of energy the system is expected to save over its lifetime, and they can be traded for an upfront discount on your purchase.
In practice, your installer will typically handle the STC paperwork and apply the discount directly to your invoice. The value varies depending on your location (solar zone) and the model installed, but in 2026 you can expect:
- STC value: approximately $900–$1,200 discount
- Eligibility: must be installed by a licensed plumber and electrician
- How to claim: your installer assigns the STCs on your behalf — you just sign a form
State-by-State Rebates
In addition to federal STCs, most states and territories offer their own incentives for heat pump hot water systems — the Victorian and NSW schemes in particular are worth understanding in depth via our guides to the Victorian Energy Upgrades program and the NSW Energy Savings Scheme. Here's the full breakdown:
| State/Territory | Program | Rebate Value | Key Conditions |
|---|---|---|---|
| Victoria | Solar Victoria Hot Water Rebate | Up to $1,000 | Combined household income under $210,000; must use Solar Victoria registered installer |
| New South Wales | Energy Savings Scheme (ESS) | $400–$800 (via installer) | Applied as point-of-sale discount; value varies by installer participation |
| Queensland | Climate Smart Energy Savers | $300–$1,000 | Eligibility varies; check current program status |
| South Australia | Retailer Energy Productivity Scheme (REPS) | $300–$700 (via retailer) | Available through participating energy retailers |
| ACT | Sustainable Household Scheme | Up to $15,000 interest-free loan | 0% interest loan for up to 10 years; covers heat pumps, solar, batteries, and more |
| Western Australia | Various local schemes | $200–$500 | Check with local council and energy provider for current offers |
| Tasmania | Energy Saver Loan Scheme | $300–$500 (loans available) | Interest-free loans for energy efficiency upgrades |
| Northern Territory | Home and Business Battery Scheme | Varies | Some programs cover hot water; check current eligibility |
Combined Total Rebate Value by State
When you stack federal STCs with state rebates, the total discount can be substantial. Here's the approximate combined value in each state:
| State | Federal STCs | State Rebate | Total Discount |
|---|---|---|---|
| Victoria | $900–$1,200 | Up to $1,000 | $1,900–$2,200 |
| New South Wales | $900–$1,200 | $400–$800 | $1,300–$2,000 |
| Queensland | $900–$1,200 | $300–$1,000 | $1,200–$2,200 |
| South Australia | $900–$1,200 | $300–$700 | $1,200–$1,900 |
| ACT | $900–$1,200 | $0 (loan instead) | $900–$1,200 + loan |
| Western Australia | $900–$1,200 | $200–$500 | $1,100–$1,700 |
| Tasmania | $900–$1,200 | $300–$500 | $1,200–$1,700 |
| Northern Territory | $900–$1,200 | Varies | $900–$1,200+ |
How to Claim Your Rebates
Step 1: Federal STCs (All States)
Your installer handles this. When you receive a quote, confirm the STC discount is included. You'll sign an STC assignment form at installation, transferring the certificates to your installer in exchange for the upfront discount on your invoice.
Step 2: State Rebates
The process varies by state:
- Victoria: Apply online through the Solar Victoria portal before purchasing. You'll receive a rebate approval, then have 6 months to complete installation.
- NSW: The ESS discount is typically applied by your installer at point of sale — no separate application needed.
- Queensland: Apply through the relevant state program. Check the Queensland Government energy website for current offerings.
- South Australia: Contact your energy retailer to check REPS eligibility. The discount is applied through the retailer's participating installer network.
- ACT: Apply for the Sustainable Household Scheme loan through the ACT Government portal. Choose an approved supplier from their list.
- WA, TAS, NT: Check with your local council and state energy authority for current programs and application processes.
Tips to Maximise Your Rebate Value
- Time your purchase: Some state programs have limited funding or operate in rounds. Apply as early as possible in the financial year.
- Choose an eligible model: Not all heat pumps qualify for every rebate. Check the approved product list for your state's program.
- Use an accredited installer: Most rebates require installation by a CEC-accredited or state-registered installer. Using an unregistered installer can void your rebate eligibility.
- Keep all documentation: Retain your tax invoice, installation certificate, and any warranty documents — you may need them for rebate verification or future warranty claims.
- Check for council rebates: Some local councils offer additional rebates on top of federal and state incentives. A quick call to your council can uncover extra savings.
With the right combination of rebates, a quality heat pump hot water system can cost as little as $2,000–$2,500 installed — making it comparable in price to a basic electric storage system, but with dramatically lower running costs for the next 10–15 years.