Air Ducts Between Floors

It turns out that the air conditioning ducts in that space are covered in condensation which is.

Air ducts between floors.

If the supply ducts are in the floor then the return air should be located up high. Floor ducts placed below a window give better results. We ve recently had a slight moldy smell and water on the 1st floor ceiling. The most common size duct used is 14 in.

Stud wall cavities and spaces between solid floor joists cannot be used as supply air plenums. Area through this access hole. One of the upstairs closets has a hatch in the floor that lets us look in between the lower ceiling and the upper floor. Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as.

Without a return air duct the air would not properly circulate and your energy costs would rise. This size fits just between most floor joists. This pulls the air across your body. When the work is completed install a 14 in.

We have a 2 floor house built in 1978 in the dc area which is hot and very humid in the summer. A return air duct is what carries air back to the furnace after it is dispensed throughout the home through the supply duct. If the supply ducts are high or in the ceiling then the return air ducts or grills should be low on a wall. Free call from tim carter about your ducts click or tap here.

Most installers report they can get to a 100 sq. Return air ducts usually use ceiling joist spaces as the actual duct which then runs back toward the furnace. Section r403 2 3 building cavities mandatory. Section r403 2 1 insulation prescriptive.

Hvac ductwork in floor slabs. Building framing cavities cannot be used as supply ducts or plenums. Return air grille with a piece of sheet metal attached to the back of the grille that has been painted flat black. This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs.

The opposite is true for ceiling ducts which should be placed as far away from windows as possible so that heat warms the room and not the window.