There is no cheque. What NSW calls its hot water upgrade incentive is a discount an installer takes off your quote, and it only exists if you are swapping to a heat pump or solar system and sign the paperwork before the work starts. Stack it with the federal certificates and a heat pump replacing an old electric tank comes off a real amount. In Parramatta, though, the harder questions are where the unit can go, whether the strata will allow it, and what tariff Endeavour Energy will let it run on.
Work through this in order and you will know what you qualify for, what to ask for on a quote, and which local rule is most likely to trip you up. If your hot water has stopped altogether, the discount can wait: call the plumbers in Parramatta first, then come back to this before anyone quotes a replacement.
Replace an electric tank with a heat pump and the NSW Energy Savings Scheme takes up to $640 off the quote; replace gas and it is up to $330. Federal certificates add more, but a 2026 install gets half the listed number, and less again each January. You must sign a nomination form before work starts, and in Parramatta check strata approval, neighbour noise hours and Endeavour Energy's 250 litre rule first.
- Confirm you are replacing an electric or gas water heater
- Check where a heat pump could sit, and strata approval
- Size the tank with Endeavour's Controlled Load 2 rule in mind
- Get several quotes showing both discounts
- Sign the nomination form before any work starts
On this page
- Check what you are replacing
- Work out where a heat pump could go
- Size the tank for Endeavour's rules
- Get more than one quote
- Ask for the federal certificates on the quote
- Check the warranty first
- Sign the nomination form before work starts
- Why it is different in Parramatta
- Five things that cost you the discount
- Replace now, or can it wait?
1. Check what you are replacing
The NSW discount is paid for the energy a new system saves, so the first question is what it replaces. NSW Climate and Energy Action lists the discount at up to $640 when a heat pump replaces an electric water heater, and up to $330 when it replaces a gas one.
Those figures are described as indicative only, and another page on the same government site gives a typical range of $405 to $675 for the electric swap. What moves the number is the installer, the model, how hard the job is, their paperwork costs and their margin. A more efficient model earns a bigger discount, and two eligible models of the same size can attract different amounts.
If the tank you have is already a heat pump or solar system, you may not qualify at all, because there is little energy left to save. The scheme also covers solar hot water, but the government page publishes dollar figures for heat pumps only, so for a solar system ask each installer to put the figure in writing.
The government's own answer to "is this a rebate?" is no. A rebate is paid to you; this incentive is a discount the installer includes in their quote. So there is nothing to apply for after the fact, and nothing to chase if the discount was not on the quote you signed.
2. Work out where a heat pump could physically go
Do this before anyone quotes, because in Parramatta it rules more homes out than the paperwork does. A heat pump pulls heat out of the surrounding air with a fan and compressor, so it needs air to breathe and it makes a noise, which a plain electric tank in a cupboard does not.
NSW noise rules name heat pump water heaters specifically. The EPA says their noise should not be heard inside a neighbour's home before 7am or after 10pm on weekdays, or before 8am or after 10pm on weekends and public holidays. After a warning, a fine of $400 can follow if the noise continues within 40 days. On a narrow block, or a balcony that shares a wall with the next unit's bedroom, that decides where the unit can sit and when it can run.
In an apartment there is a second gate. NSW strata rules list installing or replacing a heat pump as a minor renovation, which needs the owners corporation's approval, normally by more than half the votes cast at a meeting, and anything that changes the outside or the structure of the building is a major renovation needing a special resolution. Ask the strata manager what your scheme needs before you pay for quotes.
3. Pick a tank size with Endeavour's tariff rules in mind
If your tank heats on off-peak electricity, this step matters. Parramatta is on Endeavour Energy's network, which writes its own rules for which appliances may go on a controlled load tariff. Its most recent published network price list names heat pumps in one place only: Controlled Load 2 can apply to an electric heat pump with a tank of at least 250 litres, and once it is on Controlled Load 2 it cannot be moved to Controlled Load 1.
If the heat pump you are quoted has a tank under 250 litres, that rule does not cover it. Before you sign, ask the installer which circuit and tariff the new unit will run on, and what that does to your running costs. If it ends up on your general supply, a timer that runs it in the middle of the day avoids heating in the evening peak.
Endeavour's own price list also warns that councils can impose conditions on noisy equipment and tells customers to check with the council before running heat pump motors at night on controlled load. Controlled Load 1 is overnight supply, so a heat pump on off-peak and a neighbour's bedroom window are a combination to think through at step two, not after installation.
Our guide to how off-peak hot water works on Endeavour's network sets out the switching times and the tariff options in full.
4. Get more than one quote, from installers who actually offer the incentive
The discount does not come from the government to you. It comes off the installer's quote, and only installers partnered with an Accredited Certificate Provider, a business accredited by the scheme's administrator IPART, can offer it. You can still use your own plumber if they partner with one before any work takes place.
The government's advice is to get several quotes and ask each installer whether the incentive is included. Check every tradesperson's licence on the NSW Contractor and Tradespeople Register, and be wary of the unsolicited version: NSW Climate and Energy Action warns that installers operate independently of the government, even when they contact you by phone, email or flyer about these incentives.
You will still pay something. The scheme requires a minimum payment towards the system and its installation, so a quote showing a new hot water system for nothing should be read with that in mind.
5. Ask for the federal certificates to be shown on the quote too
Heat pumps and solar water heaters also earn small-scale technology certificates under the federal Small-scale Renewable Energy Scheme. They are separate from the NSW discount, and most people sign the right to create them over to an agent in exchange for a lower price. Ask for both amounts to be listed on the quote, so you can compare installers line by line.
This part is shrinking every year, and the timing is worth knowing. The Clean Energy Regulator's register lists each model's certificates over a ten year life, then cuts the number with a multiplication factor: 0.5 for a system installed in 2026, 0.4 in 2027, and so on down to 0.1 in 2030 when the scheme ends.
Parramatta's postcodes sit in heat pump zone 3, along with every postcode from 2000 to 2347. Across the roughly 1,170 heat pump models currently on the register, zone 3 values mostly sit between 25 and 34, with a middle value of 30. Installed this year, that typical model creates 15 certificates; installed in 2027, 12. The government's clearing house trades certificates at a fixed $40 each excluding GST, while the open market price moves daily, so what an installer passes on varies.
Old tank on its last legs?
Talk through a heat pump or a like-for-like swap before it fails. A licensed Parramatta plumber can look at where a new unit would go, 24/7.
6. Check the warranty on the model before you agree
For a heat pump installed under the NSW incentive, the government tells buyers to check it carries a warranty against defects of at least five years, covering the heat pump unit, the tank and the other components the manufacturer supplies.
Ask who holds that warranty. The installer should help with problems for the life of the product warranty, but some parts warranties sit with the manufacturer rather than the installer, and it is easier to find that out now than when the compressor stops.
If you would rather compare a heat pump against a straight replacement of what you have now, our hot water repairs and replacement page covers the options and what each suits.
7. Sign the nomination form before any work starts
This is the step that costs people the discount. Your installer will give you a nomination form, which must be signed and returned before installation begins. The government is blunt about it: you will not be reimbursed for work already completed.
After the job you sign a Post Implementation Declaration confirming the installation requirements were met, and the installer photographs the installation as proof it happened. They should also show you how to use the system and dispose of or recycle the old water heater. Keep copies of the quote, the nomination form and the declaration together.
8. Why the answer is different in Parramatta
The incentive is the same across NSW. What changes is how many homes can actually use it, and Parramatta sits at the hard end of that for a few very local reasons.
Most homes are apartments, and most are rented. At the 2021 Census, 85.6 per cent of the 11,749 occupied homes in the suburb of Parramatta were flats or apartments, and 70.2 per cent were rented, against 7.7 per cent separate houses. A heat pump in a tower around the CBD or Westmead means an outdoor spot with airflow, a strata approval, and an owner who is willing to pay the gap. The person who lives with the power bill is often none of those.
Endeavour's network has its own tariff rules. Parramatta is on Endeavour Energy's network, and its published heat pump rule is Controlled Load 2 only, with a 250 litre minimum tank. A compact heat pump that looks like the obvious swap for a small household can end up heating on general supply.
Off-peak means overnight, and neighbours are close. Controlled Load 1 on Endeavour's network is supply that may not be available between 7am and 10pm, which puts the heating in exactly the hours NSW noise rules protect. On a townhouse block or an apartment balcony, the unit is rarely far from somebody's bedroom.
The federal part is not a suburb question. One thing that is not local: Parramatta shares its heat pump zone with the rest of the 2000 to 2347 postcode range, so a quote that differs by suburb is about the model and the job, not the address.
9. Five things that cost you the discount
- Letting work start before the nomination form is signed. The government says outright that you will not be reimbursed for work already completed.
- Taking the first cold call. Installers who ring or letterbox about "the government rebate" are independent businesses. Compare quotes and check the licence on the NSW Contractor and Tradespeople Register.
- Buying a small heat pump and assuming it will run on off-peak. On Endeavour's network the published rule is Controlled Load 2 with a tank of at least 250 litres. Ask what tariff it will run on.
- Installing first and asking the strata later. A heat pump is a minor renovation needing approval, and unapproved work can leave you paying to put things back the way they were.
- Putting the unit under a neighbour's window. If it can be heard in their home before 7am or after 10pm on a weekday, it can be the subject of a warning and then a fine, and the fix is moving it.
10. Replace it now, or can it wait?
Deal with it today if: there is water under or around the tank, the relief valve is running constantly, or the hot water has stopped and you have ruled out the off-peak timing. Our guide on a leaking hot water system helps you tell a valve doing its job from a tank that has gone, and no hot water, what to check covers the rest.
It can wait if: the old tank is working. Nothing in the NSW scheme needs you to act this month; the government says the Energy Savings Scheme is legislated until 2050, though individual incentives can change. The federal certificates are the time-sensitive part, because the factor falls every 1 January until the scheme ends in 2030.
The honest middle ground: if your tank is old and working, get the quotes and the strata answer now, while you are not taking cold showers. A heat pump decision made the morning the tank fails is usually a like-for-like swap, because that is what can be done the same day.
- It is a discount on the quote, not a rebate: up to $640 replacing electric with a heat pump, up to $330 replacing gas, both indicative.
- Federal certificates stack on top, but a 2026 install gets half the register figure, and less again from January.
- Sign the nomination form before any work starts, or the NSW discount is gone.
- On Endeavour's network a heat pump goes on Controlled Load 2 only with a tank of at least 250 litres.
- In a Parramatta apartment, strata approval and neighbour noise hours come before any of the money.
Hot water rebate FAQs for Parramatta
Is the NSW hot water rebate paid to me as a cheque?
No. The NSW Government describes it as an upfront discount rather than a rebate, taken off the quote by an installer who is partnered with an Accredited Certificate Provider. The nomination form has to be signed before installation begins, because the government says you will not be reimbursed for work already completed. The federal small-scale technology certificates on a heat pump or solar system are usually handled the same way, as a lower price.
I rent in Parramatta. Can I claim the hot water discount?
The discount comes off the quote, so in practice it goes to whoever is paying for the new system, and in a rental that is normally the landlord. At the 2021 Census, 70.2 per cent of occupied homes in the suburb of Parramatta were rented, so this is the usual situation here rather than the exception. If your hot water has failed, NSW tenancy law treats a breakdown of an essential service for hot water as an urgent repair, so report it to your landlord or agent straight away. Suggesting a heat pump at that point costs you nothing.
Can I put a heat pump on my apartment balcony in Parramatta?
Possibly, but not without approval. NSW strata rules list installing or replacing a heat pump as a minor renovation, which needs the owners corporation's approval, and work that changes the outside of the building counts as a major renovation needing a special resolution. The unit also needs moving air and must not be heard inside a neighbour's home before 7am or after 10pm on weekdays, or before 8am on weekends and public holidays. With 85.6 per cent of Parramatta homes flats or apartments at the 2021 Census, that is the first thing to check.
Will a heat pump still run on off-peak power in Parramatta?
Parramatta is on Endeavour Energy's network. Endeavour's most recent published network price list allows an electric heat pump on Controlled Load 2 if its tank holds at least 250 litres, and says it cannot then be moved to Controlled Load 1. A smaller heat pump may need to run on your general supply instead, ideally on a timer, so ask your installer which tariff the new unit will use before you sign.
How much are the federal certificates worth on a heat pump in Sydney in 2026?
Every postcode from 2000 to 2347, which takes in Parramatta, sits in heat pump zone 3. Most heat pump models on the Clean Energy Regulator's register are listed at 25 to 34 certificates in that zone over a ten year life, and a system installed in 2026 creates half the listed number, so a typical model earns about 15. The clearing house price is fixed at $40 excluding GST, but the open market price varies, and the factor falls to 0.4 for installations in 2027.
Does replacing a gas hot water system qualify?
Yes, if the new system is a heat pump. NSW Climate and Energy Action lists the discount at up to $330 for replacing a gas water heater with a heat pump, against up to $640 for replacing an electric one, and says both figures are indicative. The gas supply to the old unit then needs to be disconnected and made safe, which is licensed gas fitting work.