Furnace Venting Into Attic

Joe downs december 31 2017 at 1 47 pm.

Furnace venting into attic.

The trick to the installation of a gas furnace in an attic space is routing the condensate drain from the attic down through the core of the house to the basement. There are 3 gas furnaces and ac units. Taking care of the vent on your gas furnace is extremely important but working improperly and damaging your vent can have catastrophic results. These types of furnaces have a dedicated pipeline that runs directly from an outside vent into a sealed combustion chamber of the furnace and a sealed vent to the outside of the home.

It has started to leak water back through the exhaust fan into the bathroom. As far as terminating a combustion air vent into an attic i hope every one can understand what can happen in that case it is totally opposite of installing a combustion supply air vent. When the vent is withdrawing air from the house it expels the gas outside through the vent. Recently moved into home in eastern ma zone 5 and have a 2 story 3k sqft home.

12 07 2009 11 36 am 21. The top of the t has soffit vents and a ridge vent. If any gaps remain and the vent isn t airtight the toxic gases will leak back into your home. You may have a bad boot around the roof vent that is leaking into the attic.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. One of the furnaces is in the attic. The roof is a t shaped gable roof. I have a bathroom exhaust fan that is vented directly into the attic.

See comment 3 above. A furnace in the attic is a design that works for all homes. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. 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.

Or you may have a distance issue. This means that 10 percent or less of the possible energy found in the natural gas that can be used for heat is lost during the combustion process due to venting. Also known as the type b this vent is operating on the natural air convection. The stem of the t has soffit vents and no vent at the top.

This drain removes the excess water that a heating system will generate. Original installers used pvc to vent the furnace to the roof but combustion air for the furnace is pulled from inside the house. The drain must be installed through the core of the house as water will be flowing during the colder months. A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace.