Tankless Gas Hot Water Heater Venting

Direct vent units pull in air from outside the house so they have two vents for intake and exhaust.

Tankless gas hot 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 reason is because like a standard water heater they create dangerous combustion gases when they fire. It doesn t matter if the gas is natural gas or propane this fact remains the same. But if you have an outdoor unit then you don t need a vent as the exhaust is already outside.

See the use and care manual for important information regarding the venting installation and materials for your tankless water heater. Traditional gas tank water heater require venting through the roof. Power vent and direct vent. Tankless water heaters are ventilated in two ways.

If you have a gas fueled tankless water heater that is installed inside the house it needs to be vented to the outside. 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. However it doesn t have to be an expensive hassle to vent. The gases contain carbon monoxide.

Tankless water heaters can be vented in two ways. Power vent units use indoor air for combustion and simply vent the exhaust to the outside.