Point-of-Use Water Heaters Buying Guide | HomeTips
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Point-of-Use Water Heaters Buying Guide

When you want hot water on demand, nothing beats an under-sink point-of-use water heater.

A point-of-use water heater is a small electric appliance that’s designed to supply hot water to a single fixture such as a bathroom sink or, in the case of some master bathrooms, a pair of sinks.

A point-of-use water heater is often placed directly below the sink. Photo: Bosch

It usually is installed right under the sink or very near it and connected directly to the plumbing that serves the faucet.

A point-of-use water heater speeds up the delivery of water to the sink by eliminating the distance the hot water must travel between a conventional water heater and the fixture. Thanks to the heater’s proximity, hot water arrives at the tap almost immediately when you turn on the water.

Two great “green” advantages are that point-of-use water heaters save water-heating energy and eliminate wasted water. Because you don’t have to let the water run while you wait for it to heat up, you can save hundreds of gallons of water per month. And, with a conventional water heater setup, every time you draw water from the water heater, hot water fills the entire length of pipe between the water heater and your faucet; then, when you turn off the faucet, that expensively heated water remains in the pipe and cools down, wasting the energy that heated it.

Point-of-use water heaters are compact and electric. Both 120-volt and 240-volt models are available. A 120-volt model is more convenient in most situations because you can just plug it in to a conventional electrical outlet—ideally located under the sink. Before buying a point-of-use water heater, be sure a grounded electrical outlet is conveniently located to serve it. You can shop for point-of-use water heaters online at Amazon.com.

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About Don Vandervort
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Don Vandervort developed his expertise more than 30 years ago as Building Editor for both Sunset Books and Home Magazine. He has written more than 30 home improvement books and countless magazine articles. He appeared regularly on HGTV’s “The Fix,” and served as MSN’s home expert. Don founded HomeTips in 1996.

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