Forced Air Furnace Duct Insulation

Use this master flow 60 sq.

Forced air furnace duct insulation.

Check the speed of the blower motor on the furnace. Wraps around new or existing ductwork. If necessary switch the wires to reduce the blower to its lowest. If you have insulated air ducts and the insulation gets wet or moldy it cannot be effectively cleaned and should be removed and replaced.

The second problem that needs to be addressed it the natural moisture in the air. Wrap fiberglass insulation around the metal boot that connects the air duct to the rectangular supply air register serving the room. Ceramic fiber insulation blanket roll 6 density 2300 f 1in x24in x60in for kilns ovens furnaces forges stoves. Ducts are infested with vermin e g.

This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs. R 6 duct insulation 6 305 btu hour 0 53 ton r 4 2 duct insulation 7 948 btu hour 0 66 ton the numbers are even higher for the additional heating load. Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. Use a paintbrush to apply duct mastic to the joints where an elbow.

Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as. Find hvac duct fittings at lowe s today. Fiberglass duct wrap insulation to reduce condensation in absorb noise from and improve the air temperature efficiency of your duct system. Insulating hvac ductwork when insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value.

No air should be able to penetrate the ductwork and the joints are a natural weak point. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. Of duct surface measures 2 ft.

Also make sure to use hvac tape and seal all of the joints between duct segments. If the conditions causing the mold growth in the first place are not corrected mold growth will recur. 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.

How often do you think you get the full labeled r value. Make sure the foil surface of the insulation is free of dust before applying the tape. Covers up to 60 sq. Some other factors to consider.

Secure the fiberglass insulation in place around the boot with.