In December, I became the proud parent of a new heat pump water heater. Contractors showed up at my house and plugged it in. Presto, my gas bill fell by about 75 percent. A little free air ...

"It can provide a slight cooling effect that helps make the area more comfortable while still delivering highly efficient hot ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." It used to be that if your water heater went out, you called in a plumber to replace it with a similar ...

Bay Area air regulators will require people to replace broken water heaters with heat pump models starting next year. We ...