Gas Tankless Hot Water Heater Venting

Power vent units use indoor air for combustion and simply vent the exhaust to the outside.

Gas tankless hot water heater venting.

What is the difference between the three types. The process of burning of the gas is called combustion and it creates heat exhaust gases including highly poisonous carbon monoxide and moisture. Tankless water heaters can be vented in two ways. Tankless water heaters are ventilated in two ways.

Gas tankless water heaters don t have to use indoor air for combustion. Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house. Tankless water heaters can vent through the roof or a side wall creating more flexibility and options for placement. 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. All water heaters that burn natural gas or liquid propane lp gas require a venting system. Traditional gas tank water heater require venting through the roof. Failure to properly vent a gas fueled water heater can result in severe injury or death from carbon monoxide poisoning.

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. The vent system must be installed by a qualified person. 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.

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