Tankless Gas Hot Water Heater Venting

The reason is because like a standard water heater they create dangerous combustion gases when they fire.

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. However it doesn t have to be an expensive hassle to vent. The gases contain carbon monoxide. Traditional gas tank water heater require venting through the roof.

Tankless water heaters can be vented in two ways. Tankless water heaters are ventilated in two ways. 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. See the use and care manual for important information regarding the venting installation and materials for your tankless water heater.

Power vent units use indoor air for combustion and simply vent the exhaust to the outside. Electric tankless water heaters do not need to be vented but gas tankless heaters do. It doesn t matter if the gas is natural gas or propane this fact remains the same. 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 use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house. Power vent and direct vent.