Attic Heating Duct Insulation

The effective r value of a buried duct installation depends on the size of the ducts the r value of the duct insulation and the depth of the loose fill insulation.

Attic heating duct insulation.

Home comfort problems often start in the attic where poor insulation and numerous air leaks create problems for your heating and cooling system and make your home uncomfortable. Unitherm ceramic bulk fiber 6 8 densities 2300f 24l x 18w x 18h 25 lbs r value 56 75 box for chimney and furnace insulation model bf 6 8 25 38 65. R 6 to r 11 cold. Attic insulation air sealing experts enjoy a more comfortable healthy and efficient home with quality attic insulation services.

For pricing and availability. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Air ducts supply conditioned air from heating or air conditioning equipment into the living spaces of your home. This includes most northern u s.

Click here to see energy star recommendations for flexible duct insulation r energystar flex. The rigid insulation was saturated from condensation. For pricing and availability. Reflectix r 21 100 sq ft unfaced reflective roll insulation 48 in w x 25 ft l item 13358.

Lower cooling requirements high heating requirements. I found instead a vintage 3 ton ac unit with 1 rigid insulation taped all over it and insulated flex duct snaking all over the poorly insulated attic. She asked me to go into the attic to find the roof leaks or where the snow is blowing in through the soffits. Methodology for estimated energy savings from cost effective air sealing and insulating.

Table 1 shows effective r values for 8 inch round ducts at three attic insulation levels and three duct insulation levels r 4 2 r 6 and r 8. Duct insulation accessories. If your rigid metal ductwork has any insulation it may already have enough. In a vented attic this can happen when the duct is in close proximity to conditioned space i e the ceiling and also thermally isolated from the hot attic beneath the ceiling insulation.

In this case the temperature gradient between supply air and the ceiling can be such that the duct surface could be cooler than the local dew point. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place.