Blocked Attic Furnace Flue

As the hot gasses cool the moisture in the gases condenses and start dripping back down the flue.

Blocked attic furnace flue.

Exhaust flue draft pressure testing duration. This picture shows furnace flue condensation problems. Any moist air introduced is going to cause water to condense on surfaces more so on the cold metal of the flue properly insulated flue with an efficient furnace should remain ambient temperature. This can be a problem when the flue runs into your attic on its way to the roof as it can heat your.

Because the flue is carrying exhaust from natural gas or propane being burned it can get hot. Once inside they recirculate and then carbon monoxide becomes part of the air taken in during the combustion process. While you are at it look around for all other duct chases in your attic. 15 degree air assuming fahrenheit is very cold and doesn t hold much moisture.

A blocked or damaged furnace flue prevents combustion gases from escaping outside. Enough condensation it drips back down. If you don t have a crawl space or a basement then it can be a challenge to place a furnace on the ground floor of the structure. A furnace in the attic is a design that works for all homes.

Then use fire rated caulk to seal the gap btw the sheet metal and flue and then the sheet metal to the attic floor. If your furnace is having problems with starting or seems to be trying to start but doesn t blocked airflow from the intake pipe is a common culprit. Will a furnace with a blocked vent cause a flame rollout duration. Instead these gases are released into your home.

Nail them both on the attic floor so they butt up against the flue. The chimney is now sized too large for the flue gases. This problem is caused by hot gases cooling too quickly in the flue. When homeowners or contractors replace 70 or 80 furnaces with 90 furnaces which no longer use the chimney the water heater is left venting into the chimney alone.

Typically there is a combustion issue or bad flue design. Where the vent passes through insulation in an attic the insulation shield must be terminate at least 2 inches above the insulation and must be secured in place. This will stop the air from getting a free ride along the chase and heating your attic. Even if you aren t having trouble with your.

Attic fan installation hot attic made cooler. This increases the amount of carbon monoxide present.