Furnace Roof Vent Freezing

The combustion air opening at the exterior wall of the furnace room may cause pipe freezing problems for cold climates.

Furnace roof vent freezing.

When the vent is withdrawing air from the house it expels the gas outside through the vent. Goose neck vent the master flow 4 in. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. This happens when warm moist air from your toilet and sink drai.

High efficiency furnaces. The vent pipe or flue is a vital component of the furnace that transmits emissions from the combustion process out of the building. Also known as the type b this vent is operating on the natural air convection. The master flow 4 in.

This vent is designed to be used on 4 in. As water enters into the drain system especially warm or hot water it condenses. These furnaces are also known as 90 percent furnaces because they have an afue rating of 90. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.

Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. It s made of zinc coated galvanized steel for durability and reliability. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation. Observation there are 2 air registers on the exterior of the house on the wall opposite the furnace room.

Though large restrictions in an intake or exhaust vent often results in the furnace shutting down in a safety lockout mode smaller restrictions can also cause ice to form around the vents. Objects sticking out of a vent can allow snow to accumulate and ice over as snow is repeatedly thawed and frozen again. Blocking the fresh air intake in a small or restricted space containing a furnace can lead to negative pressure and can cause a back draft of toxic fumes and carbon monoxide to flow back down the flue vent. For many homes a gas furnace is the preferred heating device it has proven to be an efficient and reliable way of meeting household heating needs over the years.