Furnace Roof Vent Freezing

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.

Furnace roof vent freezing. High efficiency furnaces. Also known as the type b this vent is operating on the natural air convection. This vent is designed to be used on 4 in. When the vent is withdrawing air from the house it expels the gas outside through the vent.

Observation there are 2 air registers on the exterior of the house on the wall opposite the furnace room. The vent pipe or flue is a vital component of the furnace that transmits emissions from the combustion process out of the building. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. Having the stack vent freeze up is a common problem in northern climates in the winter time.

The combustion air opening at the exterior wall of the furnace room may cause pipe freezing problems for cold climates. This condensation vapor then moves upwards being lighter than air through the venting system. 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. The master flow 4 in.

Goose neck vent the master flow 4 in. This happens when warm moist air from your toilet and sink drai. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. It s made of zinc coated galvanized steel for durability and reliability.

As it reaches the cold pipe and air at or near the roof line it then begins to reform into droplets and freeze on contact with the cold pipe. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation. 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.