Comment on Replaced my electric resistance water heater with heat pump, dramatic reduction in energy usage
Saleh@feddit.org 2 weeks agoAre they extra expensive? More complex install?
Like with an AC you need a place for the outside unit and do some piping. They are also more expensive, but the costs usually amortize well before a new unit is needed. They don’t heat as hot, so you might need a bigger tank.
lpinfinity@retrolemmy.com 2 weeks ago
First, from all the ones I’ve installed, they have all been all in one units with the heat pump on top of the tank that use the room air as the source. Not saying split hp water heaters don’t exist, I just haven’t seen any. The install for these units is practically identical to a standard electric water heater except you need to pipe a drain for the condensate.
The ones I’ve seen also include a resistive element and can act in a hybrid mode where they heat the water mostly with the heat pump, but can use resistive to boost the temp.