Water Heater Vent Height Above Roof

10 4 1 1 vents installed with mechanical exausters shall terminate not less than 12 in.

Water heater vent height above roof.

Above the highest point where they pass through the roof surface. 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. If it is a natural vent type water heater you can not vent it through the side wall it has to vent above the roof. Direct vent water heaters.

It is reasonable to assume that higher in the flue temperatures are much lower. That would be 30 of rise above the roof at the roof plus the 24 if you. Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct. All other gas vents shall terminate not less than 2 feet 610 mm above the highest point where they pass through the roof and at least 2 feet 610 mm higher than any portion of a building within 10 feet 3048 mm.

Other issue is the bathroom installation which isn t permitted as well unless the water heater closet is sealed from the bathroom area air tight doors and it has a separate fresh air supply from exterior or other areas of the house that can be used for this purpose. With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. Used where the midpoint of a gable roof would have more than 7 8 feet of run to the ridge. Here is the nfp11 codes.

Manufacturers recommendations usually take precedence over local building codes but you won t know for sure which takes precedence or what those manufacturers recommendations are.