Hvac Ducts Routed In Floor Slabs

Long term i plan on re routing all of my hvac outside of this slab ductwork as it is extremely dirty probably contaminated with all kinds of mold and insects and essentially a big mess.

Hvac ducts routed in floor slabs.

Walkerduct underfloor duct legrand. Cool air supplied through floor ducts conversely tends to settle near the floor until airflow volume fills the entirely space sufficiently to lower the temperature. Install return ducts to the ceiling of each room upstairs and keep the upstairs doors closed. Many homes that were built in the 1950s and 60s had forced air heating ducts in the ground below the slab floor.

Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as radon odors flooding mold insects and where transite cement asbestos ductwork was used. This house was built over 60 years ago. Now the air that is delivered upstairs will have to fill the room and enter the return duct rather than sliding down the stairs. Floor registers in your preferred locations with vanes to throw the air toward the far wall should be adequate if the windows are decent.

Hvac ducts routed in floor slabs problems hazards diagnosis repair. Heat loss and gain. Ducts that are in a ceiling tend to be a little more effective in distributing. This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs.

In winter heat loss from attic ducts may affect furnace warmth while heat gain may raise the temperature of a c airflow in summer. So ducts that are in the floor tend to be a little more effective in distributing heated air throughout a room. Hvac ductwork in floor slabs. 50x14mm wood grain floor cable shield pvc duct cord cover.

Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. Concrete is them poured around the ducts as they lay in the soil. The ducts are then pieced together and placed into the trenches on top of wooden blocks. Register air and heating wikipedia.

You can install ceiling boots and run flex to the return trunk in the attic. Alternatively the ducts can come up from the basement toward ceiling level in the walk in closet and run in a soffit just below the ceiling feeding the supply to the office above window level at the closet. In the mean time i am about to re do a single room s floor. The in slab duct installation process.

This was a poorly conceived method of construction because ground moisture caused rust damage and allowed flooding of the air ducts. Dare to design and repair ductwork 2019 09 23 achr news. Electrical drawing for architectural plans. Rather than the cost and trouble of trying to establish negative air pressure in the in floor or in slab ducts which is impossible if the ducts are being used to supply conditioned air to parts of the building a more effective approach is to abandon the in floor ducts by filling them with concrete best or filling and sealing at least the ducts at and around each supply and return register using concrete.

Trenches are dug in the soil according to the hvac blueprints.