Venting Tankless Water Heater Into Furnace Exhaust

Tankless heaters put out a lot of heat.

Venting tankless water heater into furnace exhaust.

Tankless water heaters can be vented in two ways. Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide. They are there for a reason and they supersede building code. 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.

Tankless units withstand below freezing temperatures. Tankless water heaters are vented in two ways. Installing your tankless water heater for easier venting to make venting easiest install your tankless water heater on an outside wall. Indoor tankless water heaters draw in outside air.

Direct vent and power vent. Set the water heater thermostat to its lowest setting typically the vacation setting. The existing vent pipe is typically too large and must be replaced with one of a smaller dimension so the water heater can heat the vent enough to ensure exhaust gases rise out of the home. Tankless water heater venting features.

Always follow the manufacturer s installation instructions exactly. Remove the flue pipe. A high e furnace has separate venting which leaves the existing vent pipe to serve only the water heater. Remove the anchoring screw from the base of the flue pipe.

Typically they require stainless steel triple wall venting. You furnace vent pipe is probably type b vent and not suitable for this use. Tankless water heaters don t always need two ventilation pipes even for direct vent units. Outside tankless water heaters free up indoor space.

Vent adapter is needed to connect the water heater which is tankless to the exhaust hose. Facts about tankless water heater venting. It would be a potential fire hazard.