Condensing Tankless Water Heater Venting

Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate.

Condensing tankless water heater venting.

Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house. The exhaust is a gas condensate that is highly acidic and corrosive to the venting so they require the right material. All of them unpleasant and some quite dangerous. Here are a few things your installer should consider for effective tankless water heater venting.

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 remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. The vent pipe must be made of stainless steel designed for venting corrosive gases.

Tankless water heaters that have a coaxial vent style provide further safety advantages. Special stainless steel pipe. If a tankless water heater is not vented properly a number of things can happen. Traditional gas tank water heater require venting through the roof.

With a condensing tankless water heater you don t need metal venting. The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented. Condensation tankless water heaters minimize the value of the installation. The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting.