Furnace Venting Through Roof

So which type of venting system should your furnace have.

Furnace venting through roof. Heat flow rate through a substance is directly related to the temperature difference on either side of the substance. You should know how to vent a gas furnace and get rid of the harmful gases for the health and safety of anyone living in your building. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. When the vent is withdrawing air from the house it expels the gas outside through the vent.

Should my furnace flue pipe go through the roof or the side of the house. Vent pipes provide this air by running outside the structure of the house. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Plumbing vent pipes are connected to your drain system and are needed for water to drain properly.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. When water drains air must replace the space that was taken up by the water. Heat loss through the vent pipe walls can take away from the draft force. Care must be taken when running vent pipes through unconditioned spaces such as a.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Direct vent systems have versatility to their installation that natural vents do not. The vents consist of circular or oblong pipe that attaches to a flange on the furnace and extends upward through an attic and passes through a roof flashing.

If your furnace has an afue rating of 90 or lower it probably exhausts the gases though the flue pipe on your roof. Piping can be set horizontally to allow venting through a sidewall or vertical installation can also be undertaken to allow venting through the roof. Also no chimney is needed regardless of whether horizontal or vertical installation is used. That depends on whether you have a standard efficiency or a high efficiency furnace.

The greater the temperature difference the greater the heat flow rate. Old furnace vents are removed when. Another problem is that flue pipes that go through the roof tend to be less efficient. The vent pipe of your gas furnace plays an important role by carrying all toxic gases created during the combustion within the furnace out of the building.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Running a vent pipe out of the roof takes some careful preparation.