How the heater moves heat
A heat pump draws heat from the surrounding air and transfers it to water in the tank. Many models also use electric resistance elements to help when demand is high or the operating mode calls for them.
What the installation needs
The unit needs a suitable air supply and temperature range, space to install and service it, and a way to handle condensate. Check electrical service and consider fan sound and the effect of the cooler exhaust air on the room.
What to compare before buying
Look at the first-hour rating and rated efficiency, then check the manufacturer’s installation conditions. Use your actual electricity rates and hot water use to compare likely costs. Confirm model availability and any incentive directly with the provider.
