Heat Pump Versus Electric Water Heater
I am designing a 2 story house for Asheville, NC. There will be a large, sealed, insulated and conditioned crawl space.
Because the plumbing fixtures are far apart I am considering 2 small hot water heaters. One adjacent to two showers and a second adjacent to the kitchen sink and dishwasher. I have selected 50 gal Rheem Marathon electric units.
An alternative is to install heat pump water heaters in the crawl space. They cannot be placed in the living space, however they can be placed directly below the fixtures. They would require much longer piping. In either case the piping would be well insulated.
I am wondering if the heat pumps have a significant enough efficiency advantage to overcome the additional pluming.
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