Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A handy person can install an electric water heater. People do it everyday. The real ...

Q. We have the original oil-burning furnace in our 29-year-old home. It’s attached to a tankless hot water heater and supplies all of the hot water for the house, including domestic hot water and our ...

A hot-water heat pump can be the cheapest way to heat water at your home or business. When matched with rooftop solar photo-voltaic (PV) electricity generation, hot-water heat pumps save even more.