How to Install a Tankless Water Heater
Pluses include endless hot water and a compact design, but the installation means a lot of pipes in a small space.
Synopsis: Plumbing and heating contractor Tom Cardillo explains the process of installing an on-demand water heater, from sizing, to mounting and venting, to making all of the plumbing connections. The article includes the necessary wall-panel dimensions for mounting the heater, the different-diameter gas lines that may be needed depending on the heater’s size, and the length and diameter of the necessary vent and combustion-air piping. A sidebar includes a description of a condensate neutralizer and when it is needed to increase an on-demand water heater’s efficiency and to keep pipes safe from acidic water.
Promising endless hot water and taking up less space than a tank-type heater, a tankless water heater has a lot to like. Every year I install several for clients who are hoping for more hot water and savings on their energy bill. Unfortunately, switching from a tank-type water heater to an on-demand unit is…