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It's going to be hard to convince folks to replace their gas water heaters with electric heat pump models that cost ~3x more and save little to no cost annually.

I'm not sure drilling for a heat pump would work in town here, and then the operating cost would still likely be more than gas (heating is at least 75% of my annual consumption).

Figuring out how to eliminate those emissions is important, but it sure as hell isn't going to save me money, especially now and in the short term.




I'm glad you laid out all the misconceptions about heat pumps!

> It's going to be hard to convince folks to replace their gas water heaters with electric heat pump models that cost ~3x more and save little to no cost annually.

Heat pumps are not "3x" as expensive and the price is coming down. Heat pumps are also a lot more efficient than any other heat source! Most households in the US would save ~$500/year on the energy bill if they switched to air-source heat pumps. Source: https://www.rewiringamerica.org/policy/bringing-infrastructu... This doesn't account for business use.

So it works like solar panels and electric cars — higher up front cost that saves you money over the long term. And if the government gave up-front rebates to make the costs the same or lower than furnaces then it's a no-brainer to use heat pumps.

>I'm not sure drilling for a heat pump would work in town here, and then the operating cost would still likely be more than gas (heating is at least 75% of my annual consumption).

Air source heat pumps are where it's at — waaay easier install than using ground-source or water-source. Air-source heat pumps used to not work in colder climates but now they do and have gotten a lot more efficient. These things are really awesome, a pretty good way to slash emissions while saving money over the long term.


Heat pump water heaters are not the same thing as heat pumps used for home heating. Please edit your comment to make it clear you misunderstood what I was talking about.

My expectation is that an air source heat pump would not work well here, at considerably higher cost than the gas furnace when installing is included in the comparison. Air source probably not working well is why I talked about drilling (each paragraph is a topic; water heating in the first and home heating in the second...).


Heat pump is how air conditioners work, a heat pump that heats works in reverse. There's no drilling needed, that would be geothermal.

Heat pump water heaters do save about half the cost in electricity over a conventional resistive-only water heater, and are optimal for places with basements, as they also dehumidify; or in warm climates, as they cool the air. So it's also useful for long term perishable storage like a root cellar would be, or in a laundry room. They do cost 3x as much, though.

Residential heat pumps for heating and cooling in the US is relatively new, and I've had nothing but problems with mine - so much so that I just received a full refund on the purchase price of my unit because of manufacturing "defects".


What kinds of issues did you have with your heat pump? Was it the unit itself, installation? And where do you live?

It's unfortunate that the heat pump ecosystem isn't as developed as it should be. Feels kind of like installing Linux vs buying a Mac — not so seamless.


Ground source heat pump is a better term than geothermal, because it is harder to confuse with other types of system.




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