Ductwork Between Floor And Ceiling

Ceiling ducts are more visible than floor ducts and harder to camouflage.

Ductwork between floor and ceiling. Since heat dispersed from ceiling ducts reaches the upper air first the hvac system has to work harder to push the heat lower into a room. The optimal placement of hvac supply registers in your home or building depends upon the building s design and your unique comfort needs. Map out your duct path to upper floors before you start cutting any holes. Homeowners expanding their existing first floor duct work to the second floor need more space than walls typically provide so they must cut a hole in the floor and pass the duct up through the first floor ceiling.

One of the upstairs closets has a hatch in the floor that lets us look in between the lower ceiling and the upper floor. The insulation you use to wrap your ducts should leave no gaps and be at least two inches thick to work effectively at reducing or eliminating condensation on ductwork. The warm air will offset any cold air entering around the window and reduce. Here are several ways to access ducts.

Floor joist cavities dropped ceiling soffits or other building cavities that will be used as duct chases should be indicated. If a basement is present the furnace is usually installed there. We ve recently had a slight moldy smell and water on the 1st floor ceiling. Neither is better per se.

Which is better hvac supply registers grilles in the floor or the ceiling. Add a false return grille cut an access hole in the ceiling of the first floor in a central area to gain access to the ducts. Required duct sizes using acca manual d acca 2009 must be calculated. It turns out that the air conditioning ducts in that space are covered in condensation which is.

Air from the attic basement or crawlspace can leak in or out where the ducts connect to the boot. Also make sure to use hvac tape and seal all of the joints between duct segments. Floor ducts placed below a window give better results. Ducts should be able to run between studs in the wall and then turn into a joist bay the space between two joists.

This size fits just between most floor joists. Boxing in the new exposed duct with studs and drywall subtracts living space but conceals the improvement. Duct heat loss and gain is usually less than the attic. We have a 2 floor house built in 1978 in the dc area which is hot and very humid in the summer.

Spans of ductwork from a basement furnace to floor ducts are more direct and shorter versus ceiling ducts. Ductwork serving floor ducts usually passes through the basement or crawlspace. The most common size duct used is 14 in. Is there even a difference between hvac supply registers grilles in the floor or the ceiling.

Occasionally we need to access the ducts between the floors to improve the airflow. Shorter ducts are generally.