Ac Ducts In Attic

The duct insulation should include a vapor barrier cover.

Ac ducts in attic. If they are located in your attic be sure the area is properly insulated and any cracks or holes are sealed. In more cases than not a 3 ton ac with the ducts in the attic has a ton or so of load that s just from the location of the ducts in the attic and the associated duct gains leakage etc. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. If you ve studied heat transfer at all you may recall that the rate at which heat moves from a warmer to a cooler body depends on the temperature difference which we abbreviate as δt.

The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load. Use metal flex or fiber board ducts that are insulated to code. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. That saves time and whenever your contractor doesn t take as long to finish a project you save in labor too.

Reduce the humidity level around your air ducts. If you have central heating and or air conditioning in your home the warm or cool air is delivered to each room through a system of connected ducts and vents. If ducts are located in a crawlspace underneath your house cover the soil to reduce moisture. Keep ducts spaced apart so air can flow between them.

It s a lot simpler for your installer to leave ductwork loose rather than having to cover it and wind it through floors and walls.