Ductwork Insulation R Value

Thermal resistance r value definition.

Ductwork insulation r value.

Looking at the cooling load only the additional load would be. One ton of air conditioning equals 12 000 btu hr so this would be almost half a ton 0 44 of cooling load. No insulation up to an r 4 value will work if you have any ducts in an uninsulated or unfinished basement. Consider these available items aes r 8 hvac duct wrap insulation reflective 2 sided foam core 4 x 50 200 sq ft 4 7 out of 5 stars 25 129 88 129 88 r 8 hvac duct wrap insulation reflective 2 sided foam core 4 x 25 100 sq ft 4 8 out of 5 stars 31.

There are no r value requirements for ductwork installed in other locations. Because it never gets very cold in florida you don t need duct insulation with as high an r value as you would if you lived up north. A material with a higher r value is a better insulator. The mass of the insulation consisting of both its density and thickness and the compression ratio at installation which determines the final compressed density and effectiveness of the insulation.

Typically r 4 to r 8 is appropriate for the ducts within the insulated part of your home. Ducting values are determined by two factors.