Now, we work below the batt [roof insulation]," he said. That change cuts costly heat transfer and enhances the longevity of the flex duct by providing a more temperate operating environment for it, ...

These flexible, insulated feeder ducts are only 2 inches to 3 inches in ... geothermal system, or heat pump to reduce humidity by about a third when cooling, compared to conventional duct systems ...

There are four basic types of HVAC fiberglass insulation products: duct liner, duct wrap, duct board, and flexible ducts. Here is a review of the composition of each: 1. Duct liner. Used in the ...

Due to its high R-Value per inch, spray foam insulation is very effective in sealing cracks or gaps to ensure that your ducts do not lose heat or cool air. Therefore, proper spray foam insulation ...