Furnace Cold Air Return Duct

Have to get the air back to the furnace.

Furnace cold air return duct.

Can accept any size collar up to 18 in. That would then reduce the flow of conditioned air to that space. Cold air returns are sized 1 5 times above the supply capacity to prevent negative pressure in the system. That is why you need a cold air return image 1.

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. The duct board return air box is an r6 the duct board return air box is an r6 insulated box that installs traditionally in a ceiling. 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. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills.

For the system to work you have to re circulate the air back to the furnace. Used as a central return vent box filter grill not included. Do not return air from bathrooms and kitchens. Product is knocked down for shipping and must be.

These ductwork tips will help balance your air conditioning and heating system. Can be easily cut to size. A furnace return system must collect all the air being put out by that system. If you had no return air in your room you would create a positive pressure.

Return air ducting is necessary in almost every room. Hvac ductwork sizing is critical for proper heating and cooling in every room.