Gas Water Heater Vent

You should have as much vertical rise as possible before there is a turn.

Gas water heater vent.

The fume hood needs to be seated properly on the top of the tank. Power venting water heaters are considered more energy efficient than a standard direct vent system and are more effective at preventing back draft air from entering the water heater. 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. The vent pipe has to run up hill a minimum of a quarter of an inch per foot.

Atmospheric gas water heaters vent their exhaust through a vertical or upward sloping metal duct vent to exit the home. Before properly venting a gas water heater it s important to determine if there is a proper natural draw. In general the vent pipe that comes up from the hood on the water heater should never be reduced. Standard atmospheric water heaters are the most common type of residential gas water heaters.

The vent system must be installed by a qualified person. This venting may either be dedicated to the water heater or can be shared with other atmospheric vent appliances such as a furnace. On some gas water heater models a power vent blower fan will be used to draw the exhaust fumes through the flue. The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent.

Discover the differences between single wall vents. All water heater venting systems use a vent duct or pipe also called a chimney or flue to bring exhaust gases from the water heater to the outdoors.