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I had a hybrid electric heat pump water heater, and I didn’t like that it made my house cold in the winter. In winter I’d switch to purely resistive mode. Later on, I moved into a house with a gas water heater and at least for me the gas operating cost is lower.

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What do you mean it made your house cold? Did you place it inside the house?

Yes, everyone has it in their house in cold climates you’d be crazy to have it somewhere not climate controlled

Ok. I was confused because mine's in a service room, attached to the house and enclosed, but now open to the house air.

That is in fact, inside the house

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