Forced Air Furnace Duct Insulation

Wraps around new or existing ductwork.

Forced air furnace duct insulation. Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. The second problem that needs to be addressed it the natural moisture in the air. No air should be able to penetrate the ductwork and the joints are a natural weak point. Covers up to 60 sq.

How often do you think you get the full labeled r value. Insulating hvac ductwork when insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Use a paintbrush to apply duct mastic to the joints where an elbow.

Ducts are infested with vermin e g. Also make sure to use hvac tape and seal all of the joints between duct segments. Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as. Wrap fiberglass insulation around the metal boot that connects the air duct to the rectangular supply air register serving the room.

If you have insulated air ducts and the insulation gets wet or moldy it cannot be effectively cleaned and should be removed and replaced. If the conditions causing the mold growth in the first place are not corrected mold growth will recur. Check the speed of the blower motor on the furnace. The duct insulation r values i mentioned above are what s on the product label.

Ceramic fiber insulation blanket roll 6 density 2300 f 1in x24in x60in for kilns ovens furnaces forges stoves. Make sure the foil surface of the insulation is free of dust before applying the tape. Find hvac duct fittings at lowe s today. Of duct surface measures 2 ft.

This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. The insulation you use to wrap your ducts should leave no gaps and be at least two inches thick to work effectively at reducing or eliminating condensation on ductwork. R 6 value meets or exceeds most energy codes and helps reduce energy costs. Some other factors to consider.

Use this master flow 60 sq. Moisture in the air wrap your ductwork. If necessary switch the wires to reduce the blower to its lowest. Hvac ductwork in floor slabs.

Secure the fiberglass insulation in place around the boot with.