Heat Pump Hot Water in New South Wales (2026): cost, rebates and what to know

By PumpSwap. Updated 23 September 2026. How we check

In New South Wales, a heat pump hot water system typically costs $2,500 - $5,000 installed after rebates. At NSW energy prices a four-person home pays about $360 a year to run it, against $952 for gas storage and $1,400 for electric storage. That saves about $592 a year against gas storage and $1,040 against electric storage, so the extra cost over a like-for-like swap is paid back in roughly 2.4 years against gas and 2 against electric at these averages. A premium model or low hot water use stretches that towards the 3 to 5 years most households see.

A typical New South Wales suburb has 315 plumbing and electrical businesses within 25km. You do not need to ring around them. Tell us about your system and up to 3 who cover your street will send you a quote.

$2,500 - $5,000

modelled installed price after NSW rebates

$360 a year

to run, four-person home, at 33c/kWh

$2,400 - $5,500

full range across 353 New South Wales suburbs

New South Wales gas rules

NSW has no rule requiring gas hot water to be replaced. The NSW Government's switch to electric page tells households they do not need to do it all now and can start when they are ready. NSW Government, switch to electric

Are heat pumps worth it in New South Wales?

The case rests on running cost. A heat pump moves heat from the air instead of making it, so it uses a fraction of the electricity of an element. At NSW energy prices (33c/kWh electricity, 4.5c/MJ gas), a four-person home that uses about 200 litres of hot water a day pays roughly:

System	Running cost a year	Installed cost
Heat pump	$360	$2,500 - $5,000 after rebates
Gas storage	$952	$1,200 - $3,500
Electric storage	$1,400	$800 - $2,500

That saves about $592 a year against gas storage and $1,040 against electric storage, so the extra cost over a like-for-like swap is paid back in roughly 2.4 years against gas and 2 against electric at these averages. A premium model or low hot water use stretches that towards the 3 to 5 years most households see.

About 50% of New South Wales households are on mains gas, so for most of them the comparison is with gas storage.

In July, usually the coldest month, Sydney averages a minimum of 8.1°C at the Bureau of Meteorology's Sydney (Observatory Hill) station, and in January a maximum of 26.0°C. Winter nights are mild for a heat pump. Bureau of Meteorology, climate statistics for Sydney (Observatory Hill)

Running costs are PumpSwap's model at the state average tariffs above, for a 45°C temperature rise and a heat pump coefficient of performance of 3.5. Your tariff and usage will move the numbers.

What a hot water system costs installed in Sydney and New South Wales (2026)

System	Installed, before rebates	Rebates
Heat pump	from $2,500 (brands below); $2,500 - $5,000 after rebates	Federal STCs plus NSW schemes
Electric storage	$800 - $2,500	None
Gas storage	$1,200 - $3,500	None
Gas continuous flow	$1,500 - $3,000	None
Solar hot water	$4,000 - $7,500; $3,500 - $6,000 after STCs	Federal STCs

National installed bands for the other systems come from the two 2026 cost guides in the sources below. The heat pump figures are PumpSwap's modelled prices for New South Wales.

Modelled heat pump prices across New South Wales

Area	After rebates
Wollongong	$2,400 - $4,700
Gosford	$2,600 - $4,900
Newcastle	$2,500 - $4,800
Maitland	$2,600 - $5,000
Coffs Harbour	$2,700 - $5,100
Shellharbour	$2,500 - $4,900
Tweed Heads	$2,700 - $5,100
Wagga Wagga	$2,800 - $5,200

Heat pump rebates in New South Wales

In NSW, a heat pump hot water system installed in 2026 gets the federal STC discount (typically $500 to $800) plus an Energy Savings Scheme (ESS) discount of up to $640 when replacing an electric water heater, or up to $330 when replacing gas. Both are taken off the installer's quote. NSW's Home Energy Saver adds zero-interest loans of up to $15,000, and discounts of up to $4,000 for lower-income households are due later in 2026.

The federal STC discount is typically $500 to $800 for a 2026 install and steps down every 1 January until 2030. Sydney postcodes are in Clean Energy Regulator zone 3 for air source heat pumps. On the regulator's register the same model earns more certificates in zone 4, which covers Melbourne, than in zone 3. Clean Energy Regulator, postcode zones for solar water heaters and heat pumps

New South Walesheat pump rebates: who qualifies, how to claim, and what is changing →

Heat pump brands sold in New South Wales

Installed prices before rebates, from PumpSwap's model. Warranty years are the maker's tank and compressor terms; noise is the quietest model's rated level.

Brand	Installed, before rebates	Warranty (tank / compressor)	Sizes	Noise
MideaChina	$2,500 - $4,100	5 / 5 years	170, 200, 280L	50 dB
EmeraldAustralia	$2,750 - $3,750	7 / 5 years	220, 270, 320L	49 dB
iStoreAustralia	$2,800 - $4,400	5 / 5 years	180, 270L	49 dB
ChromagenIsrael	$2,800 - $4,200	5 / 5 years	170, 235, 280L	48 dB
HaierChina	$3,000 - $3,650	7 / 5 years	195, 246, 330L	43 dB
ApricusAustralia	$3,000 - $3,250	6 / 6 years	260L	43 dB
RheemAustralia	$3,200 - $4,800	10 / 5 years	180, 270L	47 dB
QuantumAustralia	$3,250 - $4,450	5 / 2 years	150, 200, 270, 340L	48 dB
DuxAustralia	$3,300 - $3,850	7 / 3 years	200, 270, 285L	Not published
RinnaiJapan/Australia	$3,350 - $6,000	7 / 5 years	250, 280, 340L	45 dB
Stiebel EltronGermany	$3,500 - $5,000	5 / 5 years	302L	44 dB
DaikinJapan	$5,500 - $8,500	10 / 10 years	250, 315L	40 dB
SandenJapan	$6,500 - $8,000	15 / 6 years	250, 315L	37 dB
Reclaim EnergyAustralia	$6,600 - $8,000	10 / 5 years	315L	37 dB

Beware of quotes that look too cheap

Because rebates come off the price, New South Walessees advertised "from" prices that leave out half the job. Before comparing quotes, check each one covers:

removing and disposing of the old system, and capping the gas line if you are leaving gas
any electrical work, including a new circuit if the switchboard needs one
a tempering valve and the pipework changes for a new tank position
a base or pad for the unit, and the outdoor position that keeps noise away from bedrooms
every rebate as its own line, with the model's certificate count, so you can see what was assigned to the installer

Two installers quoting the same model can differ by more than the rebate. That is why PumpSwap sends your request to up to 3 local installers rather than showing one price.

The downsides, in New South Wales

Noise. The outdoor unit is a small compressor and fan, and each brand's quietest model is rated between 37 dB and 50 dB, on the makers' own figures. It runs in bursts to reheat the tank, so position it away from bedrooms and a neighbour's windows, and set it to run in the day if you have solar. EPA NSW, citing the Protection of the Environment Operations (Noise Control) Regulation 2026, says a heat pump water heater must not be heard inside a neighbour's residential room before 7am or after 10pm on weekdays, or before 8am or after 10pm on weekends and public holidays. Air conditioners get until 11pm; heat pump water heaters do not. EPA NSW, preventing neighbourhood noise

Recovery time. A heat pump reheats a tank more slowly than gas, which is why sizing matters: a 270L or 315L tank suits most three to four person homes, and larger homes go bigger rather than relying on the boost element.

Cold nights. In cold weather the unit draws less heat from the air and works harder, and many models switch on an electric boost element on the coldest nights, so winter running costs sit above the annual average. In July, usually the coldest month, Sydney averages a minimum of 8.1°C at the Bureau of Meteorology's Sydney (Observatory Hill) station, and in January a maximum of 26.0°C. Winter nights are mild for a heat pump.

Water quality. Sydney's mains water is soft, about 57 mg/L according to Sydney Water, which classes anything under 60 mg/L as soft, so scale is not a concern for tanks here. Sydney Water, water analysis

Space. Most units are a single tank with the heat pump on top, taller than the gas or electric tank they replace; split systems put the compressor beside the tank and need a little more room.

Who can install a heat pump in New South Wales

In NSW a hot water installation needs a plumbing licence holder: a contractor licence or a qualified supervisor certificate. A plumber with the disconnection and reconnection endorsement can disconnect and reconnect a hard-wired water heater; any other electrical work needs a licensed electrician. NSW Government, disconnection and reconnection of fixed electrical equipment

New South Wales heat pump questions

Is a heat pump hot water system worth it in New South Wales?

How much does a heat pump cost installed in Sydney?

PumpSwap's modelled installed price after rebates in New South Wales is $2,500 - $5,000, and across 353 New South Wales suburbs it runs from $2,400 - $5,500. The brands sold here start from $2,500 installed before rebates. The exact price depends on the model, your home and the installer, which is why we show quotes rather than one number.

What heat pump rebates are available in New South Wales?

Does a heat pump hot water system work in Sydney's winter?

Yes. In cold weather a heat pump draws less heat from the air and works harder, and many models switch on an electric boost element on the coldest nights, so winter running costs sit above the annual average. In July, usually the coldest month, Sydney averages a minimum of 8.1°C at the Bureau of Meteorology's Sydney (Observatory Hill) station, and in January a maximum of 26.0°C. Winter nights are mild for a heat pump. Heat pumps also earn more federal certificates in colder climate zones, because they displace more electric heating there.

How noisy is a heat pump hot water system?

Across the brands sold in New South Wales, each brand's quietest model is rated between 37 dB and 50 dB, on the makers' own figures. Makers measure at different distances, so treat the numbers as a guide rather than a like-for-like ranking. The outdoor unit runs in bursts, mostly when hot water is being reheated, so where it sits and when it runs matter more than the number. EPA NSW, citing the Protection of the Environment Operations (Noise Control) Regulation 2026, says a heat pump water heater must not be heard inside a neighbour's residential room before 7am or after 10pm on weekdays, or before 8am or after 10pm on weekends and public holidays. Air conditioners get until 11pm; heat pump water heaters do not.

Who can install a heat pump hot water system in New South Wales?

What is changing for gas hot water in New South Wales?

NSW has no rule requiring gas hot water to be replaced. The NSW Government's switch to electric page tells households they do not need to do it all now and can start when they are ready.