Furnace Roof Vent Ice

Turn the furnace off wait a minute and then turn back on.

Furnace roof vent ice.

The gases in your furnace are condensing and it appears to be so cold that they freeze almost immediately after touching the cold air. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. Goose neck vent the master flow 4 in. The master flow 4 in.

When the vent is withdrawing air from the house it expels the gas outside through the vent. It s made of zinc coated galvanized steel for durability and reliability. Something you may have noticed is snow and ice building up around the vents of your high efficiency furnace. We often don t use the furnace until the area is cleared.

When such obstructions interfere with the operation of the furnace they starve it for air but be assured there. There is a cast iron exhaust pipe that travels from my basement to above the roof. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. Clear the snow from the intake and exhaust pipe.

To find where the intake or exhaust pipe and vent are located go to the furnace and look for a black or white pipe not the metal heating ducts going from the furnace to an outside wall. I am getting condensation dripping down the outside face of my furnace vent at the roof. I think i know why this is happening i m just curious how to remedy it. Is this the smart thing to do.

As the temperatures are dropping your furnace is working even harder. The solution is simple. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents some high efficiency furnaces also include a plastic pipe for intake area and all types. Objects sticking out of a vent can allow snow to accumulate and ice over as snow is repeatedly thawed and frozen again.

What you are seeing in picture 1 below is the aluminum sleeve and cap i installed when replacing my roof. My heater keeps shutting itself off to prevent overheating because its roof vent is blocked by ice. We have a new high efficiency furnace and are anxious when snow on the roof or ice buildup from condensation blocks the vent. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys.

The unit will reset. 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. 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.