hot water heater
- An apparatus, usually fuel-burning, electric or solar-powered, in which water is heated to be used directly as domestic hot water or process hot water (but not for supplying space heating, calorifiers etc, for which a boiler or furnace is used).
1977, Kaiman Lee, Encyclopedia of Energy-Efficient Building Design: 391 Practical Case Studies:
- This [warm-air heated] house has a supplemental electric hot water heater and an oil furnace.
- 2003, Blair Allen, Julie Jones Lloyd Kahn, Septic System Owner's Manual:
- This system has an insulated 5-gallon electric hot water heater directly under the sink.
2004, Black & Decker, The Complete Photo Guide To Home Repair:
- It's a good idea to insulate at least the first ten feet of the hot- and cold-water lines coming out of the hot water heater.
apparatus in which water is heated for domestic hot water