Install Hvac Return Duct

Standard door undercut plus a small jumper duct always with fully extended flexible duct to the return zone can only handle up to about 100 cfm.

Install hvac return duct.

First building codes in many areas require that the cold air return line gets external insulation and therefore you will need to leave a gap for the insulation around the duct return line. Running a metal cold air return duct between studs requires knowledge of both hvac systems and the components involved in framing. Install the square return air duct perpendicular to the joists. Whether return ducts are used most homes have return ducts.

Sizing your return ducts usually depends on the size of your ducts as well as the size of your hvac system. This allows the air to get into the return air duct. These ductwork tips will help balance your air conditioning and heating system. A sprawling ranch might have more duct runs than.

Remove existing ductwork where needed. Hvac ductwork sizing is critical for proper heating and cooling in every room. Attach a second air duct to the first by peeling back the insulation. You want to run it so it covers up all the holes you cut in the panning.

In most cases if you are installing ducts in each room where there is a supply you will want to go with the same size as your supply vents. Cut holes in the top of the return air duct to match the holes in the panning. Have to get the air back to the furnace. If the air duct isn t long enough it is possible to add extra length.

Return air duct is connected together using s slips and drive cleats. A few homes with open floor plans and a first floor hvac system don t require them as air is easily drawn back to the furnace or air handler. Run the new flexible air duct under the house from the floor return to the underside of the air handler and attach to the metal vent box or plenum image 1. Install the damper into the duct by drilling a hole into the side of the duct and then screw the damper into place.

Number of duct runs house size is a factor here but so is the layout of your home. So putting in smaller systems that deliver more thermal capacity to the intended targets using best installation practices means that systemic problems are avoided. The takeoff rotates to make it easier to fit the duct into place. Ducts that are improperly sized installed with crimps or tight bends have leaks or are not balanced between supply conditioned air and return used air will cause the system to operate inefficiently.

Put the crimped end in first then put the other end of the duct in. Return air ducting is necessary in almost every room.