Venting Tankless Water Heater Into Furnace Exhaust

Tankless heaters put out a lot of heat.

Venting tankless water heater into furnace exhaust.

Indoor tankless water heaters draw in outside air. Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide. You furnace vent pipe is probably type b vent and not suitable for this use. Always follow the manufacturer s installation instructions exactly.

Direct vent and power vent. Gas tankless water heaters don t have to use indoor air for combustion. Tankless water heater venting features. Tankless water heaters are vented in two ways.

Set the water heater thermostat to its lowest setting typically the vacation setting. Tankless water heaters can be vented in two ways. It would be a potential fire hazard. 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.

Installing your tankless water heater for easier venting to make venting easiest install your tankless water heater on an outside wall. 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. They are there for a reason and they supersede building code.

Remove the flue pipe. Tankless water heaters don t always need two ventilation pipes even for direct vent units. A high e furnace has separate venting which leaves the existing vent pipe to serve only the water heater. 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.

Outside tankless water heaters free up indoor space. Facts about tankless water heater venting. Remove the anchoring screw from the base of the flue pipe.