Insulating Gas Furnace In Attic

If the atmospheric combustion appliances start off in a vented attic the building code doesn t require those vents because the appliances are already connected to the outside and should get plenty of air.

Insulating gas furnace in attic.

Especially for roofs and attics. 01 15 2011 01 10 am 8. Contractor or insulation installer s fee. Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue.

The total drop in efficiency can be up to 35. Most often the attic is sealed by installing spray foam insulation at the roofline thus bringing the attic inside the building enclosure and turning it into conditioned space directly or indirectly. The first and possibly most important thing is to make a commitment to yourself to change your hvac filters regularly. Would save more money in the long run and help indoor air quality.

How to insulate a metal flue pipe. Measure the circumference of the flue. Having your hvac system in your attic isn t dire though you ll need to do some work to keep your air conditioner or furnace system running as efficiently as possible. If you place the furnace in the attic then you must install the infrastructure in the building to force the warm air to the bottom floor.

U can use duct wrap insulation r8 and wrap the case coil and sides and back of furnace but do not wrap the front of the furnace so it can be got to to service. Time would probly be better spent sealing duct leakage. Turn the water heater or furnace off and allow the flue to cool to the touch. According to home advisor insulating your attic can cost between 1700 to 2100.

The main factors that impact the cost are. Sealed combustion appliances fueled with natural gas cost less to operate than electric ones. Square footage of your attic. That means you have higher energy costs and less efficiency since you re blowing the air down instead of allowing it to rise naturally.

In my parts you need to build an insulated room for a 90 in an attic. Also put the furnace on a box with a secondary drain pan beneath a wet switch and an e z trap. Heating cooling a while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic. Spray polyurethane foam spf is a popular insulation product for homes and buildings.