Insulating Air Conditioning Ducts In Attic

Repeat to insulate the remaining ducts.

Insulating air conditioning ducts in attic.

If ducts are located in a crawlspace underneath your house cover the soil to reduce moisture. At the end of the day there are really only two causes for condensation on ductwork. Sometimes the insulation is inside the ductwork. If you live in a consistently humid climate a dehumidifier can help keep the air.

If they are located in your attic be sure the area is properly insulated and any cracks or holes are sealed. One ton of air conditioning equals 12 000 btu hr so this would be almost half a ton 0 44 of cooling load. She asked me to go into the attic to find the roof leaks or where the snow is blowing in through the soffits. Improperly insulated ductwork and excessive moisture in the air.

Wrap the insulation around the duct and then pinch the seam closed. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. R 8 duct insulation 5 227 btu hour. If you decide to insulate your old ducts just make sure you or your contractor follows this order of operations.

Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. 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. Dirty air will still enter your ductwork through the leaks even after you add insulation.

Other times insulation may be on the outside. But what if you have an older house that doesn t have r 8 duct insulation. Keep ducts spaced apart so air can flow between them. Seal the leaks with mastic or mastic tape we follow a highly precise seal and test protocol that identifies all leaky areas and results in.

The condenser in your air conditioner works hard to get rid of heat and pressurize refrigerant for the return trip through your house. Because the moving air is in the ductwork for only a short period of time it does not need the insulation r value the attic floor requires. Or you live in a state that doesn t require r 8 on ducts in attics. Both of these are easily treatable.

The rigid insulation was saturated from condensation. Secure the insulation with short strips of foil tape. Flexible ductwork comes with different insulation r values. Final thoughts on condensation on ductwork.

Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8 for attic ducts and 6 for ducts located anywhere else. Put it in an attic full of blown insulation and you re.