Tankless Gas Hot Water Heater Venting

But if you have an outdoor unit then you don t need a vent as the exhaust is already outside.

Tankless gas hot water heater venting.

Tankless water heaters are ventilated in two ways. The gases contain carbon monoxide. Tankless water heaters can be vented in two ways. 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 vent through the roof or a side wall creating more flexibility and options for placement. All indoor tankless gas water heaters must be vented vertically or horizontally to the outdoors using factory approved venting material no other venting material is permitted. Traditional gas tank water heater require venting through the roof. However it doesn t have to be an expensive hassle to vent.

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. It doesn t matter if the gas is natural gas or propane this fact remains the same. See the use and care manual for important information regarding the venting installation and materials for your tankless water heater.

Electric tankless water heaters do not need to be vented but gas tankless heaters do. Power vent and direct vent.