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 ...

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

We've tested and reviewed products since 1936. Read CR's review of the American Standard Hybrid Heat Pump water heater to find out if it's worth it.

The South Korean heating specialist said its new heat pump system can achieve a seasonal coefficient of performance of up to 4.79 and flow temperatures of up to 75 C.