How it works
It works like a refrigerator in reverse: a small compressor pulls heat from the room air and transfers it into the tank. Most models also have backup elements for times of heavy demand.
Where it fits well
- Replacing a standard electric tank
- A garage, basement or utility room with room around the unit and air that stays moderate
- Households that want lower running costs over the life of the heater
What to consider
- It needs clearance and a volume of air to draw heat from
- It cools and dries the space it is in
- It needs a condensate drain
- It is taller and heavier than many standard tanks
- Recovery is slower in heat-pump-only mode
Rebates and incentives
Utility and government incentives for heat-pump water heaters are common and change often. It is worth checking what applies in your area before comparing costs.