Hvac Return Duct Size

4 tons x 144 square inches return air duct in square inches.

Hvac return duct size.

Is our heat pump return register too small. Air intakes and outlets ventilation systems air intakes and outlets rules of thumbs. The air return duct is 12 x 19 228 sqin about 2 3 the area of the factory recommended air filter 14 x 25 350 sqin. What about noisy heat pump operation.

Particle diameter opening size. Run the correct size from the furnace and be sure they are installed correctly. Design cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12 150 12x4 215 10x6 310 10x8 430 10x10 550 10x12 180 14x4 270 12x6 400 12x8 550 12x10 680 12x12 210 16x4 320 14x6 490 14x8 670 14x10 800 14x12 240 18x4 375 16x6 580 16x8 800 16x10 950 16x12 270 20x4 430 18x6 670 18x8 930 18x10 1100. The return air ducts help pull the air as it is being pushed.

Free fast bids click or tap here to get free bids in hours from local hvac companies to have new return air ducts installed in your home. Install the appropriate duct size connections. Round duct and rectangular duct comparison a round duct with a cross sectional area of 0 6m2 has a perimeter of 2 75m a rectangular duct with an equal cross sectional area has a perimeter of 3 87m the rectangular duct therefore requires more metal for its construction this adds more weight and costs to the design. Installing the duct incorrectly will affect the heating capacity of the system as much as improper sizing.

Particle diameter strainers and filters mesh size vs. Registers have the same inlet neck and outlet face size. Calculate the return duct size based on the air conditioner s size and the type of duct you are using. What size of return duct do i need for a 3ton hvac air handler answered by a verified hvac technician.

Use the following formulas. We use cookies to give you the best possible experience on our website. Size of air conditioner example. Once all the rooms are considered for duct size calculations increase the duct size accordingly.

By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. An hvac return air can be in the floor but they work much better on walls up about 7 feet.