Venting Hot Water Heater Through Wall

Natural gas or propane hot water heaters are generally less expensive to operate than electric heaters but installing a standard vent in a house without an existing chimney is expensive.

Venting hot water heater through wall.

Anonymous user i would like to vent a hot water tank through a side wall. Hot water heater venting horizontally. If the exhaust pipe is 4 inches in diameter the flue liner cross sectional area should not be larger than 88 square inches. I was hoping if i went up a foot for every foot of horizontal the draft will be sufficient.

Direct venting or side wall vent chimney and flue systems are a method of venting the exhaust gases from a heating appliance directly out through the side wall of a building while eliminating the need for a vertical chimney of any sort. Instead both systems typically expel exhaust through a pipe that runs outside through an exterior wall. Venting a hot water heater through the wall atmospheric water heater. Measure the diameter of the exhaust pipe leaving your hot water heater.

This type of venting system is different from what you see on most gas water heaters. Single wall vent pipe cannot be used for water heaters located in attics and may not pass through attic spaces crawl spaces or any confined or inaccessible location. Exceptions may be made for non combustible walls such as solid masonry. With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof.

Direct vent water heaters. The only other option is an electric water heater which requires no vent. Yes you can vent a gas fired water heater out of the wall if it is either a power vent unit. I will also install a thimble in the wall to separate the exhaust pipe from combustibles.

Can i do this without using a powered unit. Direct vent water boiler. They do make two models of power vent units one is called a direct vent power vent as bob harper pointed out it draws its combustion air from outside unlike a standard power vent unit which burns its combustion air from the dwelling. The difference is that a power vent water heater pulls in combustion air from the space.

Gas or oil fired side wall power vents are provided by several manufacturers listed at the end of this article. 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 solid liquid or gas fueled water heater whether they are tank type or tankless must vent through the roof unless they are direct vent. Flue in a flue.

Single wall vent pipe cannot pass through any interior wall. The atmospheric water heater is very common. If it is a 3 inch diameter pipe the inside cross sectional area of the chimney flue liner should not exceed 49 square inches.