Hot Water Heater Flue Pipe Clearance

1 inch or 6 inches water heater vents generally are of two types.

Hot water heater flue pipe clearance.

A vent pipe is an important part of the gas water heater maintenance don t forget your schedule. The minimum distance between the single wall vent pipe and combustible materials is 6 the single wall vent pipe cannot be concealed inside the wall or floor. Home plumbing water heater water heater vent clearance to wood or combustionable materials. This construction defect is considered a fire hazard.

A single walled vent pipe should be six inches away from any combustible material and a double walled vent pipe should be one inch away. Note some modern high efficiency water heater may have pvc vents. Single wall vent pipes cannot pass through a ceiling floor firewall or wall. Metal flue fire clearance requirements single wall metal pipe flues gas fired equipment.

Here s an example of what i say. 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. For gas fired water heater vents. The water heater vent pipe is too close to combustible material and should be serviced before the close of escrow.

The duct may be metal or plastic depending on the type of vent system. 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. An exception is made for non combustible walls such as solid masonry or concrete. Metal single wall and double wall.

Gas fired heating equipment. Fire clearances required range from 6 to 36 depending on the equipment. 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. Furnace water heater vent pipe clearance single wall.

Basement finishing projects are notorious for this code violation. Single wall vents get very hot requiring a 6 in. The common rule is that the horizontal part of the single wall vent pipe must be equal or shorter than 75 of it s total developed height. Water heater venting basics.

6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material.