Water Heater Vent Clearance

Complete the vent pipe installation to the water heater s vent connector fittings.

Water heater vent clearance. For gas fired water heater vents. Use cleaner primer and pvc cement where the vent pipes join the water heater. Maintain the recommended air space clearance to combustible materials and building insulation. Note some modern high efficiency water heater may have pvc vents.

1 inch or 6 inches. In an attempt to maximize finished floor space when boxing off the water heater from the rest of the room people often don t leave enough clearance between the new wall framing and the vent pipes. Single wall vents get very hot requiring a 6 in. The building code states that.

6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. 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. Since the vent does not rely on the buoyancy of hot air it can be run horizontally to the outside of the house. Cut a hole through the roof and interior ceiling to accommodate the vent pipes.

Water heater vent clearance to wood or combustionable materials. Metal single wall and double wall. Even if you keep the clearances at the entrance and exit from that space whatever section is inside must be double wall type pipe. Water heater vents generally are of two types.

A certain amount of airflow is also required for proper combustion and ventilation. A clearance area of 12 inches is required on all sides of a hot water heater. Water heaters with power venting come with an electric blower fan often very quiet installed on top of the water heater and can have either vertical or horizontal vent ducts. Locate the vent such that there is no less than 12 305mm between the bottom of the exhaust vent hood and the ground surface.

Highlights of gas heater vent clearance distances 36 above forced air intakes the exhaust vent terminal shall be located at least 3 feet above any forced air inlet located within 10 feet. Locate the vent such that there is no less than 12 305mm between the nearest side of a dryer exhaust vent hood and an adjoining wall or building inside corner. Single wall vent pipes cannot pass through a ceiling floor firewall or wall. Basement finishing projects are notorious for this code violation.