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Upgrade to a Tankless Water Heater

Replacing your old tank-style water heater with a more efficient on-demand system isn’t as difficult as it appears

Electrician Brian Walo and plumber Shannon Neff install lots of tankless water heaters every year, and recently they installed a gas-fired one in Walo's own home. In this thoroughly illustrated article, Walo goes step-by-step through the process, beginning with how to remove a tank-style heater and how to prep the area for the new model. He shows how to install the water and gas lines safely and how to create a vent in an exterior wall. Although gas-fired tankless heaters don't consume much electricity, some minor electrical adaptations may be necessary, and Walo shows what to do. A photo of the installed heater has parts and connections labeled, and a full page explains piping options.

Upgrade to a Tankless Water Heater
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