
Hot Water
Heat Pump Hot Water
Replace your electric or gas storage tank with a Panasonic CO₂ heat pump and cut hot water running costs by up to 70%.
A heat pump hot water system works like an air conditioner in reverse, pulling heat from the outside air to heat the tank, which is why it uses a fraction of the electricity of an element. We supply and install Panasonic's new Australian CO₂ range, designed for local conditions and backed by a 10-year parts and labour warranty, and we handle the government incentives for you.
4.8 on Google · 28 reviews
“Unique Technical Services Pty Ltd (Somnath and team), very professional, patient, and knowledgeable. Highly recommend and would use them again without a second thought. Very competitive rates too!!!”
Licensed & insured · ARC L162322 · Rebates handled · Since 2014
Where it works
- Replacing an old electric storage tank
- Moving off gas hot water
- Homes with solar panels
- New builds and renovations
Why Panasonic CO₂
- Up to 70% lower hot water running costs than conventional electric storage, depending on usage and conditions
- High efficiency with a COP of up to 6.1 on the 6 kW model
- 250 L, 315 L and 400 L tank options for every household size
- Very quiet at around 37 dB
- Works in outdoor temperatures down to about −10 °C
- Natural CO₂ (R744) refrigerant with a global warming potential of 1
- Panasonic Comfort Cloud app control, and it can be timed to soak up excess solar
- 10-year parts and labour warranty, subject to warranty terms
Models we install
- 4 kW HE-UM40CR: 4.0 kW heating capacity, COP up to 5.0, 250 / 315 / 400 L tanks. Suits most households.
- 6 kW HE-UM60CR: 6.0 kW heating capacity, COP up to 6.1, 250 / 315 / 400 L tanks. Faster recovery for larger families and higher demand.
Installation includes
- Removal and disposal of the old tank
- Tank and heat pump positioned for airflow, noise and access
- Plumbing, valves and electrical connection to Australian standards
- Commissioning, controller set-up and a walk-through
- Rebate and incentive paperwork lodged on your behalf
Questions we get asked
- How much can I save with a heat pump hot water system?
- Panasonic quotes up to 70% lower running costs than a conventional electric storage tank. Real savings depend on how much hot water you use and whether you have solar, but a family of four on an old electric tank typically saves several hundred dollars a year.
- Are there government rebates for heat pump hot water?
- Yes. Victorian Energy Upgrades discounts apply to approved heat pump systems replacing electric or gas tanks, and Solar Victoria offers a hot water rebate for eligible households. We check what you qualify for and lodge the paperwork.
- Does it work on cold mornings?
- The Panasonic CO₂ range is rated to operate down to about −10 °C, well below anything Melbourne sees. CO₂ refrigerant is particularly good at high water temperatures in cold air.
- Which tank size do I need?
- As a guide, 250 L suits one to three people, 315 L three to four, and 400 L larger households or homes with spa baths. We confirm on quote.

