Venting Tankless Water Heater Into Furnace Exhaust

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.

Venting tankless water heater into furnace exhaust.

Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide. Facts about tankless water heater venting. This will prevent the water heater from turning on and burning you with exhaust gases. Remove the anchoring screw from the base of the flue pipe.

Gas tankless water heaters don t have to use indoor air for combustion. Tankless heaters put out a lot of heat. Direct vent and power vent. A high e furnace has separate venting which leaves the existing vent pipe to serve only the water heater.

Tankless water heaters can be vented in two ways. Typically they require stainless steel triple wall venting. Always follow the manufacturer s installation instructions exactly. Set the water heater thermostat to its lowest setting typically the vacation setting.

Installing your tankless water heater for easier venting to make venting easiest install your tankless water heater on an outside wall. Outside tankless water heaters free up indoor space. Vent adapter is needed to connect the water heater which is tankless to the exhaust hose. 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 water heater venting features. Tankless water heaters don t always need two ventilation pipes even for direct vent units. Tankless units withstand below freezing temperatures.

All emission of liquid or gas water heaters which are tankless needs vent pipes made of stainless steel and approved by ul. It would be a potential fire hazard. Tankless water heaters are vented in two ways.