Furnace Cold Air Return Duct

These ductwork tips will help balance your air conditioning and heating system.

Furnace cold air return duct.

For the system to work you have to re circulate the air back to the furnace. A furnace return system must collect all the air being put out by that system. Return air ducting is necessary in almost every room. If you had no return air in your room you would create a positive pressure.

Cold air returns are sized 1 5 times above the supply capacity to prevent negative pressure in the system. Menards offers a wide range of ductwork pipe and fittings to help your ductwork systems run efficiently these products are used for warm air return supply and exhaust systems. Metal and flexible ductwork need to be sealed to guarantee that it is reasonably air tight for maximum efficiency use an approved foil tape or duct sealant. In addition its flexibility allows for easier installation in hard to reach areas.

Have to get the air back to the furnace. If the furnace is putting out 1 000 cubic feet per minute of air flow the return system must collect 1 000 cubic feet and take it back to the unit. That would then reduce the flow of conditioned air to that space. That is why you need a cold air return image 1.

Do not return air from bathrooms and kitchens. Can be easily cut to size. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. Can accept any size collar up to 18 in.

Used as a central return vent box filter grill not included. Product is knocked down for shipping and must be.