Cold Air Return Duct Design

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Image Result For Hvac Return Duct Sizing Chart Psychrometric Chart Printable Chart Hvac Duct

Image Result For Hvac Return Duct Sizing Chart Psychrometric Chart Printable Chart Hvac Duct

Placement and design of return air ducts and vents is a crucial factor in how efficiently and effectively conditioned air will circulate in your home.

Cold air return duct design.

The furnace or air handler ahu in the drawing below pulls air through the return ducts conditions that air and then sends it through the supply ducts back into the house. The problem with bedrooms occurs in houses where the hvac design did not include return vents in each bedroom. 6 tips for good ductwork design. These ducts draw air into your system from the interior of your home or from outside.

Plus the knock down design simplifies transporting to the job by taking up very little space. If airflow isn t balanced which is the case in a massive percentage of houses then your home isn t heating up evenly or efficiently. With a few materials and just a little work you can modify cold air return ducts for significantly better balance. This pulls the air across your body.

Cold air returns in order for your ductwork system to operate properly the furnace must have a consistent source of air that is cycled back into the unit. It s important that roughly the same amount of air moves through supply ducts as return ducts in order to maintain neutral air pressure in rooms. We offer the starting ductwork for furnaces and air handlers called supply air plenums and return air plenums. Not providing enough returns is a common ductwork design flaw that leads to comfort complaints.

In addition we offer take offs elbows round duct pipe and register boots that can be connected to the starting ductwork and run to each room. Cold air returns bring this unconditioned air back to the furnace. Cold air ducts are an essential but often neglected part of your hvac system. The flexible design allows for connection of a new or existing side air return on either side based on the placement of the reinforced sheet metal panel of the return air box assembly.

The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. More product details close. If the supply ducts are in the floor then the return air should be located up high. If you need a longer duct add either another sec tion of the unico return duct or a length of plastic core flex duct between the unit and the unico return duct.

After you install the duct through the studs you will need to add framing around the top and bottom of the ductwork to allow for a wall finish such as drywall. Ductwork design mistake 5. Running a metal cold air return duct between studs requires knowledge of both hvac systems and the components involved in framing. To maintain balanced air pressure and air movement your duct system needs return vents for air in the room to be pulled back into the hvac system.

For each cubic foot of air that is pumped out into your home the same amount must be drawn back in so the process can start over. This duct does an excellent job of absorbing sound from the blower. Supply air from furnaces and air conditioners should be on outside walls.

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