Best Heat Pump Hot Water Systems in Australia
Not all heat pump hot water systems are equal. We break down the leading brands by efficiency, reliability, warranty, and value — so you can choose with confidence.
Best Heat Pump Hot Water Brands in Australia
A comparison of leading brands available from Australian installers. COP values and warranty terms are indicative — verify with your installer for the specific model being quoted.
Sanden
CO₂ refrigerant — highest COP in cold weather
COP
4.5–6.0+
Tanks
250L, 315L
Warranty
5 yr compressor / 10 yr tank
Price
$$$$ (premium)
Best for: Cold climates, maximum efficiency, long-term value
Uses CO₂ (R744) refrigerant — environmentally superior. Split system only. High upfront cost, lowest lifetime running cost.
Reclaim Energy
CO₂ heat pump — Australian brand
COP
4.0–5.5
Tanks
250L, 315L, 400L
Warranty
5 yr compressor / 10 yr tank
Price
$$$$ (premium)
Best for: Efficiency-focused buyers, Australian brand preference
Australian-owned brand using CO₂ refrigerant. Highly regarded for reliability and customer support.
Rheem
Most widely available brand in Australia
COP
3.2–3.8
Tanks
270L, 340L, 400L
Warranty
2 yr heat pump / 10 yr tank
Price
$$–$$$ (mid-range)
Best for: Wide installer availability, reliable brand, large tank options
Market leader in Australia with an extensive installer network. Good balance of price and performance.
Dux
Strong mid-range value
COP
3.0–3.5
Tanks
270L, 315L
Warranty
2 yr heat pump / 7 yr tank
Price
$$–$$$ (mid-range)
Best for: Value-conscious buyers wanting a reputable brand
Part of the Rheem group. Competitive pricing with solid performance across Australian conditions.
iStore
Entry-level to mid-range, all-in-one
COP
3.0–3.5
Tanks
180L, 270L, 320L
Warranty
2 yr heat pump / 5 yr tank
Price
$$ (affordable)
Best for: Budget-conscious buyers, straightforward replacement jobs
Popular entry-level option. Widely available with competitive install pricing.
Stiebel Eltron
German engineering, premium build quality
COP
3.5–4.0
Tanks
200L, 300L
Warranty
3 yr heat pump / 5 yr tank
Price
$$$–$$$$ (premium)
Best for: Quality-focused buyers, European brand preference
Well regarded for build quality and quiet operation. Strong in colder European climates — performs well in cool Australian conditions too.
Our recommendation: Rather than selecting a brand upfront, request quotes from local accredited installers and ask them to recommend a system suited to your household size, climate, and budget. Comparing 2–3 quotes ensures you get the right system at a competitive price.
Benefits of Heat Pump Hot Water
Advantages
- 3–4× more energy-efficient than resistive electric storage
- Government rebates reduce upfront cost by $1,000–$2,000+
- Compatible with solar panels and off-peak electricity tariffs
- Lower annual running costs than gas, LPG, or electric storage
- Zero direct carbon emissions (no combustion)
- Reliable hot water supply with smart timer control
Considerations
- Higher upfront purchase price than resistive electric (before rebates)
- Requires ventilated outdoor-accessible space — not for fully enclosed areas
- Slightly more maintenance required than a simple resistive element
- Performance (COP) decreases in very cold weather (below 5°C)
- Does not work without electricity — no backup in a power outage
How a Heat Pump Hot Water System Works
Unlike a resistive electric heater that converts electricity directly to heat, a heat pump moves heat — making it 3–4× more efficient.
Air Intake
The heat pump draws in ambient air from the surroundings — even in cool weather, air contains useful heat energy.
Heat Extraction
Refrigerant in the evaporator coil absorbs heat from the air, turning from liquid to gas in the process.
Compression
A compressor raises the refrigerant temperature significantly — the same principle used in reverse-cycle air conditioning.
Water Heating
The hot refrigerant transfers its heat to the water in the storage tank, then cools and returns to start the cycle again.
The Efficiency Advantage
A conventional electric storage system uses 1 kWh of electricity to produce 1 kWh of heat (COP = 1.0). A quality heat pump produces 3–4 kWh of heat per kWh of electricity (COP = 3.0–4.0+). For a typical Australian household, this translates to annual hot water bill savings of $400–$1,200 compared to electric storage — with no change to comfort or convenience.
Heat Pump Hot Water System Price Guide
Prices below are indicative ranges for supply and installation across Australia. Actual quotes will vary by brand, location, installation complexity, and available rebates.
| System Type | Supply | Install | Total (before rebates) |
|---|---|---|---|
| Entry-level all-in-one (200L) | $1,500–$2,000 | $600–$1,000 | $2,100–$3,000 |
| Mid-range all-in-one (270L) | $2,000–$2,800 | $700–$1,200 | $2,700–$4,000 |
| Premium all-in-one (315L) | $2,800–$3,800 | $800–$1,400 | $3,600–$5,200 |
| Split system (270L+) | $3,000–$4,500 | $1,000–$1,800 | $4,000–$6,300 |
| Commercial (500L+) | $5,000–$15,000+ | $1,500–$4,000+ | $6,500–$19,000+ |
$400–$900
Applied upfront by your installer — reduces the sticker price before you pay.
$300–$1,300+
Varies by state — NSW, VIC, SA, WA, ACT, and NT all have active programs.
$1,000–$3,500
Typical out-of-pocket after combining federal and state incentives.
All prices are indicative and based on typical market rates. Actual costs vary by brand, system size, installation complexity, and location. Rebate amounts are estimates only and subject to change. Always obtain at least two written quotes and confirm current rebate eligibility with your installer.
Get Free Quotes from Local Accredited Installers
We match you with CEC-accredited installers near you. 100% free, no obligation.
Get Your Free Quote
Connect with a local CEC-accredited installer who will assess your home, confirm your eligible rebates, and provide a no-obligation installation quote.
No-obligation quote
Free assessment with zero pressure to purchase.
CEC-accredited installers
All installers are Clean Energy Council accredited — required for STC eligibility.
Rebates handled for you
Your installer will manage the federal STC and state rebate process.
Same-day installation available
Most heat pump installations are completed within a single day.
Local CEC-accredited professionals
Verified, insured, and experienced with heat pump installs
Frequently Asked Questions
Common questions answered by our team.
Ready to Get Your Free Heat Pump Quotes?
We match you with CEC-accredited installers near you. Compare quotes and claim all available rebates.