Gas Tankless Hot Water Heater Venting

Failure to properly vent a gas fueled water heater can result in severe injury or death from carbon monoxide poisoning.

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. But if you have an outdoor unit then you don t need a vent as the exhaust is already outside. All water heaters that burn natural gas or liquid propane lp gas require a venting system. 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.

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 are convenient and take up little space but the installation of gas fueled models is more complex than a traditional water heater installation. Tankless water heaters can be vented in two ways.

Tankless water heaters can vent through the roof or a side wall creating more flexibility and options for placement. Power vent units use indoor air for combustion and simply vent the exhaust to the outside. Tankless water heater venting must be done correctly to ensure safe and efficient operation of the unit. Gas tankless water heaters don t have to use indoor air for combustion.

Power vent and direct vent. The vent system must be installed by a qualified person. Tankless water heaters are ventilated in two ways. Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house.

Traditional gas tank water heater require venting through the roof. 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. If you have a gas fueled tankless water heater that is installed inside the house it needs to be vented to the outside. 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.