Gas Tankless Hot Water Heater Venting

Some tankless water heaters can vent directly through the wall which is helpful as it removes the need for anybody to be taking anything away from the roof although more traditional tankless water heaters designed many years ago will usually require rooftop venting.

Gas tankless hot water heater venting.

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. Direct vent tankless water heater power vent tankless water heater and also atmospheric venting types are three common types on the market. Venting serves as the most important factor in using tankless water heaters improper venting methods result in leakage of gas or even cause a fire. Traditional gas tank water heater require venting through the roof.

What is the difference between the three types. Tankless water heaters can be vented in two ways. Gas fired water heaters like those illustrated here must be supplied with adequate combustion air and the heater s exhaust gases must be vented to outdoors. Power vent and direct vent.

Tankless water heaters are convenient and take up little space but the installation of gas fueled models is more complex than a traditional water heater installation. But if you have an outdoor unit then you don t need a vent as the exhaust is already outside. Tankless water heater venting must be done correctly to ensure safe and efficient operation of the unit. It doesn t matter if the gas is natural gas or propane this fact remains the same.

Gas tankless water heaters don t have to use indoor air for combustion. The process of burning of the gas is called combustion and it creates heat exhaust gases including highly poisonous carbon monoxide and moisture. Failure to properly vent a gas fueled water heater can result in severe injury or death from carbon monoxide poisoning. All water heaters that burn natural gas or liquid propane lp gas require a venting system.

Atmospheric venting refers to a system in which exhaust from the water heater naturally rises out of the appliance s combustion chamber then travels up through a standard chimney style flue that. The vent system must be installed by a qualified person. 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.