Heat Pump Water Heaters
Tens of thousands of Mainers own heat pump water heaters. They’re popular because they produce lots of hot water, can save more than $3,000 over their ten-year life, and with current incentives can be less expensive to buy than traditional electric water heaters. In addition, while they heat water they also dehumidify.
Heat pump water heaters work like air conditioners, but rather than moving heat from the room to the outdoors, they move heat from the room into the water tank.
Heat pump water heaters are sometimes called “hybrids” because in addition to a heat pump, they have traditional electric resistance heating elements for times when demand exceeds what the heat pump can produce.
Financial Example
| Electric Water Heater |
Heat Pump Water Heater |
Purchase Price Savings | |
| Warranty/Capacity | 6 year/40 gal. | 10 year/50 gal. | |
| Purchase price* | $379 | $1,099 | |
| Rebate/instant discount | n/a | -$750 | |
| Net purchase price | $379 | $349 | $30 |
| Purchase price savings | $30 |
| Ten-year electricity savings** | + $3,500 |
| Total | $ 3,530 |
Benefits
- With available incentives, heat pump water heaters can cost less than electric water heaters.
- They produce lots of hot water.
- They can save more than $3,000 over the life of the unit compared to electric water heaters.**
- They typically have 10+ year warranties.
- They help dehumidify.***
*Note: Your costs may vary.
**Source: energystar.gov accessed 1/1/21. Click here to estimate your own savings
***Heat pump water heaters complement but do not replace dehumidifiers because they operate based on hot water demand instead of humidity levels.
Take Action
- If your electric water heater is more than 10 years old, replace it now while incentives are available. Don’t wait for it to break.
- Use our online tools to find participating retailers and installers who can help you determine if a heat pump water heater is right for you.
Things to Consider
- Because of their noise and cooling effect, heat pump water heaters are better suited to basements than living spaces, especially if there is extra heat available from a boiler.
- They complement but do not replace dehumidifiers because they operate based on hot water demand instead of humidity levels.
- Condensate from the heat pump water heater must be plumbed to a sink or drain.
- For optimum efficiency, install units in 10’ x 10’ or larger rooms with temperatures above 35°F.
- Recommended clearances from walls and ceilings should be followed to ensure adequate air circulation and access.
- The first few feet of incoming and outgoing pipe should be insulated to minimize heat loss.
- Air filters must be rinsed regularly.
Click here for a heat pump water heater brochure/rebate form.
Click here for a list of the best heat pump water heater prices in Maine.
Click here for a heat pump water heater user tips guide.
Click here to see what Maine plumbers are saying about heat pump water heaters.
Click here for our Heat Pump Water Heater Myths and Facts sheet.
Click here for our Heat Pump Water Heater Myths and Facts Video.