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3.5kW Econergy Domestic Hot Water Heat Pump

Econergy heat pump water heaters can save up to 75% on hot water costs.

Econergy heat pump water heaters transfer heat from the air into the water using a revolutionary patented single pass technology. Econergy heat pump water heaters are extremely efficient and ecologically friendly compared to most other heating methods.

Key Features
  • More efficient than natural gas, LPG, electric cylinder, diesel
  • The only heat pump water heater given the tick by Consumer 
  • Patented Single Pass technology for maximum durability and savings
  • Fast recovery - 67L per hour, heating water to 60˚C at 15˚C air temperature
  • Full heat pump operation right down to -5˚C, without boosting from an electric element
  • Built to provide the highest durability in New Zealand conditions
  • Thorough testing of each unit before it leaves the Auckland factory
  • Small compact design gives flexibility for placement
  • Able to retrofit to existing hot water cylinders
  • Easy to install
  • Able to be used with a wet back or solar for even more energy efficiency and savings. 
  • 6 year warranty made up of 3 years parts and labour then 3 years 'back to base'.
NZ-Owned Business
NZ-Owned Business
Scope of Use
  • Can be wall mounted, roof mounted or on the ground connected to indoor or outdoor hot water cylinders of almost any type
  • Can be used in conjunction with solar or wetback heating systems 
  • Ideal for new builds or renovations as it can be retrofitted to most existing hot water cylinders
  • Small compact design gives flexibility for placement, easy to install
  • Designed and built for use in New Zealand conditions
In-Service History

New Zealand owned and operated by Hot Water Heat Pumps Ltd, manufacturers of water heating heat pumps for over 35 years. Backed by nationwide service.

Other Performance Attributes

Econergy has a limited 6 year warranty which operates concurrently with the 6 year performance guarantee from the date of installation if the unit has been certified as correctly installed and commissioned to the current version of the Econergy installation manual by a suitable qualified installer.

The sealed refrigeration system including the compressor, and the expansion device have a six year parts warranty. Other parts including the water system, and electronics have three years parts and labour warranty at which point the warranty reverts to 'Back to Base' for a final three years. 

'Back to Base' means where delivery to and collection of the product from Hot Water Heat Pumps Ltd is the responsibility of the owner. Owner responsibility includes electrical, plumbing and any building works. 

To be able to claim against this warranty, the owner must send a completed "Installation Declaration Form" to Hot Water Heat Pumps Ltd.


Independent Assessment
Independent Assessment
Consumer Report
Additional Information

Products include hot water heat pump solutions for hot water systems, swimming pool and spa heating and indoor pool ventilation.

Product Enquiries

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