Tankless Hot Water Heater Exhaust

Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house.

Tankless hot water heater exhaust. Condensing tankless water heaters lower the cost of installation. All of them unpleasant and some quite dangerous. Power vent and direct vent. Tankless water heaters with condensing technology are up to 95 more efficient than non condensing units and emit a comparatively cooler exhaust gas according to the propane education and research council.

Direct vent units attract outside air from the house or building while power vent units solely need an exhaust vent and should be installed in a larger area for receiving sufficient air amount for combustion. Tankless water heaters can be vented in two ways. Direct vent units pull in air from the outside so they have two vents for intake and exhaust. Direct vent units pull in air from outside the house so they have two vents for intake and exhaust.

Power vent units use indoor air for combustion and simply vent the exhaust to the outside. Tankless water heaters can be vented in two ways. If a tankless water heater is not vented properly a number of things can happen. A flow sensor in this pipe then signals the control panel to begin the heating process.

The exhaust vent can therefore be pvc or polypropylene and not metal a feature that lowers. The exhaust fan is activated then the gas valve is opened and the burner is ignited. Power vent units use indoor air for combustion and simply vent the exhaust to the outside.