Take advantage of the government rebates available and upgrade to a modern highly efficient system.
Get Free Quote*From $0 upfront may be available only for eligible customers, approved products and qualifying rebate combinations. Final out-of-pocket cost depends on the existing system, property, installation requirements and available government incentives. Eligibility and pricing are confirmed in your written quote.
Only Heat Pumps helps Victorian households upgrade from older gas and electric hot water systems to modern energy-efficient heat pump technology.
Our team can assist with system selection, licensed plumbing and electrical installation, and available rebate pathways including Solar Victoria, Victorian Energy Upgrades and Federal STC incentives where eligible.
Eligible Victorian households may be able to access Solar Victoria rebates, Victorian Energy Upgrades discounts and Federal STC incentives when upgrading to an eligible heat pump hot water system.
Yes. Only Heat Pumps can assist with Solar Victoria applications and apply eligible rebate discounts upfront where available.
Heat pump hot water systems are designed to use less energy than many traditional electric hot water systems, helping reduce household running costs over time.
We install a carefully selected range of heat pump hot water systems from established Australian suppliers and manufacturers. The best model depends on household size, climate, installation space, water quality, recovery needs and available incentives.
Model availability changes over time. We confirm the exact model, rebate eligibility, warranty and installation requirements in your written quote before work begins.
Popular integrated heat pumps engineered for Australian homes, with compact and family-size options, modern controls and R290 refrigerant on current models.
Compact all-in-one system suited to smaller households. Current R290 versions combine a 180 litre storage tank with programmable operation and a relatively narrow footprint.
Best suited to: smaller households and space-conscious replacements.
The larger iStore option for family homes and higher hot-water demand. The current 270L R290 platform offers stronger recovery capacity while retaining an integrated outdoor design.
Best suited to: medium and larger households.
A long-established hot-water brand with integrated heat pump options designed for Australian conditions.
A 280 litre integrated R290 heat pump with touchscreen controls. Available in hardwired and plug-and-lead configurations, including options intended for challenging water conditions.
Model family: 551E280.
A 270 litre integrated heat pump designed as an energy-efficient alternative to conventional storage hot water. It uses surrounding air as the primary heat source rather than relying on direct solar exposure.
270L family-size integrated system.
Rinnai's Enviroflo range includes integrated and split-system choices across a broad spread of household capacities.
Large integrated systems offered in 300L and 340L capacities, with Wi-Fi control and R290 refrigerant.
Integrated range for typical households, including 215L, 280L and 300L variants with smart controls and R290 refrigerant.
Split-system range with 5.0kW and 7.0kW heat-pump options and 250L, 315L and 400L tank combinations for higher demand.
Compact 180L option intended for smaller households and straightforward electric-storage replacement applications.
A mid-size integrated model aimed at households of around five people, with Wi-Fi functionality and solar-PV compatibility.
A 250L heat-pump option for medium households, designed for efficient operation, quiet performance and automatic hygiene cycles.
Premium split-system heat pump hot water using CO₂ refrigerant, paired with Australian-made storage tank options.
A high-efficiency split heat-pump platform for standard residential applications. The external heat-pump unit is paired with a separate storage tank, allowing flexible positioning.
Higher-capacity version designed for larger households, faster recovery and colder conditions. Reclaim systems can be configured with stainless-steel or glass-lined storage tanks.
Common residential tank sizes include 250L, 315L and 400L.
A broad Australian heat-pump range with integrated and split options, including modern R290 all-in-one systems.
Established all-in-one range with R290 refrigerant, Wi-Fi control and capacities around 210L, 260L and 315L.
Next-generation inverter all-in-one platform with colour touch screen and current 210L, 270L and 320L storage options.
Separate heat-pump and tank configuration with Australian-made 316 stainless-steel tank options, useful when integrated-unit placement is difficult.
Australian-designed heat-pump options ranging from next-generation inverter models to the established HP Classic platform.
190L inverter heat pump using R290 refrigerant, aimed at smaller households. Features multiple operating modes and low-noise operation.
330L version of the M9 inverter platform for larger families, retaining R290 refrigerant, smart controls and cold-weather capability.
Proven 246L platform for roughly 3–5 person households, with solar-ready operation and a long-established integrated design.
Integrated R290 heat-pump systems using Duplex 2205 stainless-steel cylinders, available across a particularly wide capacity range.
Compact integrated system for smaller households. Model family OMNIXHP-180-R290.
Mid-size stainless-steel integrated heat pump for common family-home applications.
Larger integrated capacity for higher daily hot-water consumption and bigger households.
High-capacity integrated model for large households or properties with substantial hot-water demand.
Australian-owned Aqua Plus offers compact all-in-one R290 heat pump hot water systems with smart app control, quiet operation and 200L and 270L capacities.
200L all-in-one heat pump using natural R290 refrigerant. Rated COP is 4.15, with 43dB operation, SmartLife app control and a built-in 1.8kW electric booster.
Best suited to: households of up to 4 people with normal hot-water use.
270L version of the Aqua Plus all-in-one platform, retaining R290 refrigerant, COP 4.15, 43dB operation, app-based hot-water management and low-temperature operation.
Best suited to: households of up to 6 people with normal hot-water use.
We compare household demand, existing services, installation position, electrical requirements, climate and available rebates before recommending a system.
Get My Heat Pump RecommendationiStore offers integrated heat pump hot water systems in compact and family-size capacities. The current range shown on our Brands page uses an all-in-one outdoor format, making it a practical option for many electric and gas hot-water replacements.
Model availability can change. We confirm the exact iStore model, current warranty, rebate eligibility and site requirements in your written quote.
Compact all-in-one system suited to smaller households. Current R290 versions combine a 180 litre storage tank with programmable operation and a relatively narrow footprint.
Best suited to smaller households and space-conscious replacements.
The larger iStore option for family homes and higher hot-water demand. The current 270L R290 platform offers stronger recovery capacity while retaining an integrated outdoor design.
Best suited to medium and larger households.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get an iStore QuoteRheem is a long-established hot-water brand with integrated heat pump options designed for Australian conditions. The models below are the Rheem heat pumps currently featured in our product range.
Rheem specifications vary by model. We confirm electrical supply, water quality suitability, current product availability and incentive eligibility before installation.
A 280 litre integrated R290 heat pump with touchscreen controls. Available in hardwired and plug-and-lead configurations, including options intended for challenging water conditions.
Model family: 551E280.
A 270 litre integrated heat pump designed as an energy-efficient alternative to conventional storage hot water. It uses surrounding air as the primary heat source rather than relying on direct solar exposure.
270L family-size integrated system.
A water-circulated split heat pump that separates the outdoor heat-pump unit from the storage tank, making it well suited to homes with tighter outdoor spaces or where the tank is better positioned indoors, such as a garage. The system uses ultra-low-GWP R290 refrigerant and is designed for operation across a wide range of Australian climates.
315L vitreous enamel or 325L stainless steel tank options · Models 565E315 & 565E32A · Suitable for households up to 6 people.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get a Rheem QuoteRinnai's Enviroflo range includes integrated and split-system choices across a broad spread of household capacities, allowing the system format to be matched to household demand and available installation space.
Rinnai offers several heat-pump configurations. We assess whether an integrated or split arrangement is better suited to the property before recommending a model.
Large integrated systems offered in 300L and 340L capacities, with Wi-Fi control and R290 refrigerant.
Integrated range for typical households, including 215L, 280L and 300L variants with smart controls and R290 refrigerant.
Split-system range with 5.0kW and 7.0kW heat-pump options and 250L, 315L and 400L tank combinations for higher demand.
Compact 180L option intended for smaller households and straightforward electric-storage replacement applications.
A mid-size integrated model aimed at households of around five people, with Wi-Fi functionality and solar-PV compatibility.
A 250L heat-pump option for medium households, designed for efficient operation, quiet performance and automatic hygiene cycles.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get a Rinnai QuoteReclaim Energy systems use a split configuration, pairing an external CO₂ heat pump with a separate hot-water storage tank. This layout can provide flexible positioning and is often selected for premium efficiency-focused installations.
Reclaim systems are configured as a heat pump plus tank. Final tank size and heat-pump capacity should be selected together based on demand, climate and installation layout.
A high-efficiency split heat-pump platform for standard residential applications. The external heat-pump unit is paired with a separate storage tank, allowing flexible positioning.
Higher-capacity version designed for larger households, faster recovery and colder conditions. Reclaim systems can be configured with stainless-steel or glass-lined storage tanks.
Common residential tank sizes include 250L, 315L and 400L.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get a Reclaim Energy QuoteNeo Power offers integrated and split heat pump hot water systems, including modern R290 all-in-one models and configurations using separate storage tanks.
Neo Power includes both all-in-one and split layouts. We recommend the format after checking access, airflow, noise considerations, tank position and electrical requirements.
Established all-in-one range with R290 refrigerant, Wi-Fi control and capacities around 210L, 260L and 315L.
Next-generation inverter all-in-one platform with colour touch screen and current 210L, 270L and 320L storage options.
Separate heat-pump and tank configuration with Australian-made 316 stainless-steel tank options, useful when integrated-unit placement is difficult.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get a Neo Power QuoteEnvirosun provides Australian-designed heat-pump hot-water options ranging from newer inverter systems to the established HP Classic platform.
Household size is only one part of model selection. We also consider hot-water usage patterns, existing plumbing, available space, climate and any applicable incentive requirements.
190L inverter heat pump using R290 refrigerant, aimed at smaller households. Features multiple operating modes and low-noise operation.
330L version of the M9 inverter platform for larger families, retaining R290 refrigerant, smart controls and cold-weather capability.
Proven 246L platform for roughly 3–5 person households, with solar-ready operation and a long-established integrated design.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get an Envirosun QuoteOmniX integrated heat pumps use R290 refrigerant and Duplex 2205 stainless-steel cylinders, with capacities ranging from compact residential sizes through to high-demand options.
OmniX spans a wide capacity range. We size the system to actual household demand and installation conditions rather than automatically choosing the largest tank.
Compact integrated system for smaller households.
Model family OMNIXHP-180-R290.
Mid-size stainless-steel integrated heat pump for common family-home applications.
Larger integrated capacity for higher daily hot-water consumption and bigger households.
High-capacity integrated model for large households or properties with substantial hot-water demand.
We match tank size, recovery performance and installation requirements to your household rather than selecting on capacity alone.
Where applicable, we check the selected model against current Victorian and Federal incentive requirements before quoting.
Our team coordinates the plumbing and electrical work required for a compliant heat pump hot water installation.
Tell us about your existing hot water system, household and suburb. We can recommend the appropriate model and confirm current availability and incentives.
Get a OmniX QuoteAqua Plus is a brand of Hydronic Systems Australia and offers all-in-one domestic hot-water heat pumps designed around efficient R290 refrigerant technology, compact installation and smart hot-water management.
Current Aqua Plus models include APAIO200 and APAIO270. Both are listed with a COP of 4.15, 43dB noise rating, R290 refrigerant and operation down to -7°C. We confirm current warranty, incentive eligibility and site requirements in your written quote.
Compact all-in-one model with 2.78kW rated heating capacity, COP 4.15, 60L/h hot-water production, R290 refrigerant and a built-in 1.8kW electric heater.
Aqua Plus recommends this size for up to 4 people with normal use.
Larger all-in-one model with the same 2.78kW rated heating capacity, COP 4.15 and 60L/h hot-water production, providing additional stored hot water for larger households.
Aqua Plus recommends this size for up to 6 people with normal use.
SmartLife app support allows compatible Aqua Plus systems to be managed from a phone.
The current Aqua Plus specification lists a 43dB noise rating for both all-in-one models.
Aqua Plus lists Federal STCs, Victorian incentives and NSW ESCs as potential incentive pathways, subject to scheme and customer eligibility.
Tell us about your existing hot-water system, household size and suburb. We can confirm the suitable Aqua Plus capacity, current availability and applicable incentives.
Get an Aqua Plus QuoteOnly Heat Pumps provides heat pump hot water installation and upgrade services across Victoria, with New South Wales service areas being progressively added. Use the suburb and postcode guide below, then contact us to confirm availability for your property.
We service metropolitan Melbourne and regional Victoria. The locations below are common service areas and examples rather than an exhaustive list.
Postcodes: 3000–3207
Melbourne CBD, Carlton, Richmond, Hawthorn, Kew, Brunswick, Essendon, Footscray, Werribee, Point Cook, Sunshine, Preston, Reservoir, Greensborough, Doncaster, Box Hill, Ringwood, Croydon, Dandenong, Berwick, Cranbourne, Frankston, Mornington and surrounding suburbs.
Common postcodes: 3211–3233
Geelong, Belmont, Highton, Grovedale, Lara, Leopold, Ocean Grove, Drysdale, Torquay and nearby areas.
Key centres: Ballarat 3350, Bacchus Marsh 3340, Melton 3337, Bendigo 3550
Including surrounding towns and regional properties where installation access and scheduling permit.
Key centres: Shepparton 3630, Wangaratta 3677, Benalla 3672, Wodonga 3690
Regional coverage is available across many surrounding towns. Contact us with your postcode for confirmation.
Key centres: Pakenham 3810, Warragul 3820, Moe 3825, Morwell 3840, Traralgon 3844
Coverage extends through many Gippsland communities, subject to installer availability and property access.
We are expanding into NSW in stages. Availability will vary by postcode while our installer network and scheduling capacity grow.
Priority expansion areas: Albury 2640 and surrounding border communities.
Examples: Wagga Wagga 2650, Griffith 2680 and nearby regional centres as coverage becomes available.
If your suburb is not listed, send us your postcode. We can confirm whether your area is currently active, coming online soon, or outside the present service radius.
NSW customer?
Ask us to confirm your postcode before selecting a system or arranging an installation date.
Coverage can depend on travel distance, installer scheduling, system type and regional demand. A suburb not shown above may still be serviceable.
Provide your suburb and postcode through our quote form or by phone.
We check current installer availability and any location-specific requirements.
If your property is serviceable, we can assess the system, installation requirements and available incentives.
Tell us where the property is located and we’ll confirm current service availability for Victoria or NSW.
Check My AreaWe are an Australian family owned and operated business, with more than 30 years' experience in the plumbing industry. We are fully insured for your peace of mind, and we offer a lifetime guarantee on our workmanship.
When you make contact with us, you will speak with an experienced licensed plumber, not just a salesperson after a quick sale. We will listen to your needs and recommend a hot water heat pump system that suits you and your family's needs.
We are an authorised retailer with Solar Victoria and are able to lodge your application with Solar Victoria. Not only are our plumbers fully qualified, but they also hold Solar Victoria installer accreditations. Our apprentices work under close supervision from one of our qualified plumbers.
Along with our plumbers is our team of electricians. All of our electricians are fully qualified and insured. Our electricians are licensed with Energy Safe Victoria and hold all licences required with BPC and ARC.
Fully qualified plumbers and electricians with the required Victorian licences and accreditations.
We can assist with Solar Victoria applications and ensure your installation is handled correctly from start to finish.
Only Heat Pumps Pty Ltd
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“Absolute legends and one of the best customer service experiences I've come across. Had 2 x iStore 270l systems installed today.”
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Anthony Ul
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Giulia Olivieri
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Marcus K
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Jayson Bundy
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Bhupesh Gupta
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Michael M
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“Sean replaced my old gas hot water system with a new electric heat pump. He was very helpful and responsive.”
Matt M
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“Sean was quick to provide a competitive quote which included full installation of an iStore heat pump.”
Matthew Gartland
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“Quick, accurate quote after an in person visit. New hot water system the next day, we couldn’t be happier.”
Kathryn Rae
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“Fantastic advice on helping my family select the right heat pump. Sean and his team were great.”
Robert Whitmarsh
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“Fantastic service from Sean Cooper. Smooth, hassle-free experience. Highly recommended!”
carlo nardella
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“Very professional, accommodating and precise. Highly recommended. Thanks!”
Peter Ng
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“Sean was great to deal with. Very quick to reply to messages and saved me heaps of money.”
David Thomas
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“Fantastic experience from start to finish. Excellent communication, honesty and transparency.”
Daniel Emmerton
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“Fantastic experience with Sean at Only Heat Pumps. Great install and very happy.”
Briar Gunther
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“Such great service and advice. They worked diligently and efficiently, even through the rain.”
Emily van Ree
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“Sean responded immediately and had our new hot water service installed within a week.”
Rafx Hamilton
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“Same day service and very professional install by the team. Fair price as well.”
Fai Tang
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“Could not have asked for better service. Sean communicated with me throughout the whole installation.”
Lauren N
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“This review is for the business. It’s too early for the hot water system yet, it’s been only one day.”
Ulric
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“Excellent service, great price, work was neat and tidy, job completed in timeframe promised.”
Craig Bourner
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“Sean and the team were super helpful, provided a range of options and delivered a super professional finish.”
Thomas Dawe
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“Sean was great, and they turned up straight away to help get our hot water back up and running.”
Craig Hilton
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“Sean and the team have been efficient, understanding and hard-working. A hassle free experience getting rid of gas.”
Claire PComm
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“Sean was quick to respond to our request for a quote. Looking forward to lots of hot water.”
Peter White
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“Excellent service. The product is perfectly appropriate for my requirements and all required trades were organised promptly.”
Don Jayasinghe
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“Very prompt. Sean helped me sort out an elderly neighbour and was able to get everything done swiftly.”
Kristian Stapley
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“Amazing service. Would recommend to anyone thinking of installing a new water system.”
Rock Wilkins
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“Super professional, fast, and efficient. Everything was done smoothly and on time. Highly recommended!”
Yan Hai
Google Review
“Many thanks for the great advice and urgent installation of our new iStore heat pump hot water system.”
Benjamin Cronin
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“Good price, installation completed as scheduled, hot water system taken away and site clean. Excellent service.”
susiem07
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“A great job done in good time and at a competitive price. Highly recommended!”
Leon Clark
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“Great installation from Sean and his team.”
Jimmy Lau
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“Excellent efficient service. I was impressed with Sean’s work ethic and friendly attitude.”
Robert Smith
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“Most honourable tradie I've met. Went far beyond anything as far as quality and cost.”
Corey Mckay
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“Sean and his staff were courteous and very professional. Highly recommend this company.”
Jacqui Rippon
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“Seamless installation from start to finish!”
Bryn Harris
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“Great job, excellent communication. Highly recommend.”
Matthew Goodall
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“Excellent.”
Chengyu Yuan
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“Couldn’t ask for a better install.”
Patrick McArdle
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“Fantastic service from Sean and his team who completed a tricky heat pump install for us.”
Peggy Creek
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“Sean was absolutely fabulous in taking care of a complicated and tricky installation for us.”
Alice Macklin
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“Thanks Matthew. Was a pleasure.”
Matthew Forman
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Hot water heat pumps work by extracting heat from the surrounding air and transferring it to water, rather than generating heat directly.
A fan draws air into the heat pump’s evaporator, which contains a refrigerant that absorbs heat from the air.
As the refrigerant absorbs heat, it turns from a liquid into a gas. That gas is then compressed, raising its temperature significantly.
The hot, compressed refrigerant then passes through a condenser coil, where it transfers heat into the water storage tank.
Heat pumps are more energy-efficient than traditional gas or electric water heaters because they use electricity to move heat rather than directly generating it.
This can help lower running costs and reduce greenhouse emissions.
A fan draws surrounding air into the heat pump system.
The evaporator and refrigerant absorb heat from the air.
The refrigerant gas is compressed, increasing its temperature.
Heat is transferred through the condenser coil into the water storage tank.
Speak with a licensed specialist and check what rebates may be available.
Check My EligibilityNot every home needs the same system. The right heat pump depends on your household size, usage, installation space and rebate eligibility.
Our goal is to recommend a system that properly suits your home, rather than pushing a one-size-fits-all option.
Choosing the right heat pump system means looking at how your household uses hot water, what system you currently have installed, and what upgrade path makes the most sense long-term.
A properly selected heat pump can help improve efficiency, lower running costs and maximise available rebate opportunities.
✔ Household size and daily hot water usage
✔ Current electric, gas or solar system setup
✔ Available installation location and airflow
✔ Energy efficiency and running costs
✔ Victorian rebate eligibility requirements
✔ Long-term reliability and suitability
Larger families may require bigger systems with higher storage capacity and faster recovery rates.
Your existing hot water setup can impact the best and most cost-effective upgrade path.
Outdoor airflow, access and positioning all play an important role in heat pump performance.
System selection needs to align with Victorian and Federal rebate program requirements.
We can assess your home, current setup and eligibility to recommend the right heat pump solution.
Get My Fixed QuoteSpeak to a specialist to confirm your total savings today.
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