Insulation Around Attic Furnace

In either cse it fills the required open air space around the b vent in the un conditioned attic space.

Insulation around attic furnace.

For diy attic insulation you ve got two choices. It also keeps the heat out of the home or duct. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. If you re really concerned you can also build a small insulated room around your unit to prevent heating and cooling loss.

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. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. If the furnace is a fuel burning one be sure you provide air for combustion. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Both can be added to uninsulated attics or layered over existing material. This creates a dam around the flue that prevents insulation from. High efficiency furnaces aren t usually recommended for an attic. Insulation isn t only about keeping heat in.

Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water. Loose fill or batt the common term for blanket insulation. You need insulation even around your ducts no matter where you live. Heating cooling a while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic.

Wrap the flashing around the flue and staple it to the flashing inside the ceiling joists through the notches on the bottom edge. Although fiberglass may not burn it can melt contribute to a fire and the speed at which it spreads. Fiberglass insulation cannot just butt up to the vent pipe touching it. The b vent system requires air space clearance as well as clearance from combustibles.

In the average home around 20 to 30 of the heated or cooled air flowing through the ducts is lost to leaks and uninsulated surfaces according to the department of energy. This puts the furnace in at least semi conditioned space.