Cold Air Return Ductwork

Can accept any size collar up to 18 in.

Cold air return ductwork. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Return vents also provide air circulation. 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.

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. Can be easily cut to size. The square root of 576 is 24. Step 4 calculate the square root of the total.

Return air ducts are necessary for just about every room. First building codes in many areas require that the cold air return line gets external insulation and therefore you will need to leave a gap for the insulation around the duct return line. In addition its flexibility allows for easier installation in hard to reach areas. Every building that uses forced hot air for heating will have cold air return vents.

Diameter of duct x 3 14 return air duct in square inches. The conditioned air then re circulates back into the system as needed. Running a metal cold air return duct between studs requires knowledge of both hvac systems and the components involved in framing. A cold air return vent is necessary for optimal functioning of your heating system.

During cold weather gas burners create heat in the heat exchanger image 2 which in turn heats the air. Return cold air from registers to the furnace so that it will run properly. Product is knocked down for shipping and must be. 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.

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. Used as a central return vent box filter grill not included. Therefore your return air duct and grill size will be 24 by 24 inches tip. Item 1790033 model 1790033.

Yes if your house is either hot or cold i ll bet you have inferior or lacking return air ducts. 4 ton unit x 144 square inches 576 squared. A furnace return system must collect all the air being put out by that system. They do precisely what the name implies.

Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes.