RENEWABLE & SUSTAINABLE ENERGY REVIEWS, cilt.13, ss.1211-1229, 2009 (SCI-Expanded)
A heat pump water heater (HPWH) operates on an electrically driven vapor-compression cycle and pumps energy from the air in its surroundings to water in a storage tank, thus raising the temperature of the water. HPWHs are a promising technology in both residential and commercial applications due to both improved efficiency and air conditioning benefits.