It is possible to run a 120V HPHW that doesn’t go into “hybrid” mode, i.e. using the high wattage 240V resistive elements when the heat pump is deemed, by the fuzzy logic controller, to be insufficient for the required tank reheat. Meaning, if you can tolerate the slower heating a heat-pump only tank is the best option … and you can hook it up to a regular 120V circuit OR (local electrical code permitting) the lower gauge 120V wires may be more than adequate for a hardwired low current 240V circuit. Heat pump water heaters are a lot more efficient than resistive-element ones and will probably soon be required by many states. @32259fl I would definitely run an HPHW in HP-only mode. I think the “Energy Saver” mode is speaking to the Resistive Element Era vs the new world. If you follow the logic. The only reason to activate the resistive elements would be to get a quicker rise.
You also get “free” air conditioning. That’s usually great in summer but in winter you’ll want to consider the installation environment.
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