Can’t sing Sweetwater Plumbing’s praises enough. When I first inquired about replacing my 75-gallon gas water heater with an 80-gallon heat pump water heater, I was impressed with John Howe’s product knowledge and ability to understand my goals. (I was very…
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What heat pump water heater rebates are available?
SCE and city-owned utilities (like Riverside Public Utilities) sometimes offer heat pump water heater rebates. They change often, so we check what your utility offers before you decide.
Expansion tank
air charge.
When water heats up, it expands. In a home with a pressure regulator or a check valve on the main line, that extra water has nowhere to go, so an expansion tank takes it in. Inside the tank is a cushion of air, and it only works when its air pressure matches your home’s water pressure. A heat pump water heater stores hot water in a tank just like a standard heater, so it needs the same protection.
Expansion tanks are pre-charged at the factory (commonly 40 PSI, depending on the brand), but many Inland Empire homes run 60 to 80 PSI. Installed straight out of the box, the tank fills with water and stops doing its job. That puts extra strain on the water heater, the relief valve and every fixture in the house.
Whenever an expansion tank goes in, we measure your home’s water pressure first and set the tank’s air charge to match. Most plumbers skip it. We never do.
It moves heat instead of making it.
A heat pump water heater pulls heat from the air around it and puts it into the water, much like a refrigerator working in reverse. Because it moves heat rather than creating it with a heating element, it uses far less electricity than a standard electric water heater. Most models also have a backup element for times of heavy hot water use.
The Inland Empire is a good fit for heat pump water heaters. Garages stay warm most of the year, which is the kind of space these units work best in.
What to check before you decide.
- Space and air: the unit needs room around it and enough air to draw heat from, so a garage is often the best spot
- Power: most models need a 240-volt circuit; some plug-in models work on a standard outlet
- A drain: the unit makes condensate water, which needs a place to drain
- Noise: it has a fan and compressor, so it is not the best fit right next to a bedroom
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