Consumer Reports tested heat pump water heaters to determine which ones were the most energy-efficient and fastest at heating ...

The latter are what are called portable heat pumps, and to me, they seemed like an energy dream come true: Gas-free heating at a fraction of the operating cost of a conventional electric ...

Uniform Energy Factor refers to a water heater's efficiency when run under simulated heavy use conditions for a 24-hour period. Electric Heat Pump is part of the Water Heaters test program at ...