Condensing Tankless Water Heater Venting

The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting.

Condensing tankless water heater venting.

Condensation tankless water heaters minimize the value of the installation. If a tankless water heater is not vented properly a number of things can happen. The exhaust vent is also made of pvc or plastic and not metal which a feature that reduces the value of the installation. Installing your tankless water heater for easier venting to make venting easiest install your tankless water heater on an outside wall.

The exhaust is a gas condensate that is highly acidic and corrosive to the venting so they require the right material. Tankless water heaters can vent through the roof or a side wall creating more flexibility and options for placement. The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented. Vent to the outside.

If the unit is installed on a basement wall the vent pipe can be run up just a few feet and then vented out the side with the use of a 90 degree elbow. Traditional gas tank water heater require venting through the roof. The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. With a condensing tankless water heater you don t need metal venting.

Tankless water heaters that have a coaxial vent style provide further safety advantages. All of them unpleasant and some quite dangerous. Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house. The vent pipe must be made of stainless steel designed for venting corrosive gases.