Furnace Cold Air Return Duct

Hvac ductwork sizing is critical for proper heating and cooling in every room.

Furnace cold air return duct.

Return air ducting is necessary in almost every room. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes. Can accept any size collar up to 18 in. 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.

Cold air returns are sized 1 5 times above the supply capacity to prevent negative pressure in the system. Product is knocked down for shipping and must be. For the system to work you have to re circulate the air back to the furnace. In addition its flexibility allows for easier installation in hard to reach areas.

Used as a central return vent box filter grill not included. A furnace return system must collect all the air being put out by that system. 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. These ductwork tips will help balance your air conditioning and heating system.

Can be easily cut to size. Have to get the air back to the furnace. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. Do not return air from bathrooms and kitchens.

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 is why you need a cold air return image 1.