Cold Air Return Ductwork

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 return ductwork.

Every building that uses forced hot air for heating will have cold air return vents. 4 ton unit x 144 square inches 576 squared. 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. Step 4 calculate the square root of the total.

A furnace return system must collect all the air being put out by that 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. Item 1790033 model 1790033. During cold weather gas burners create heat in the heat exchanger image 2 which in turn heats the air.

Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes. Used as a central return vent box filter grill not included. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. In addition its flexibility allows for easier installation in hard to reach areas.

Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Can be easily cut to size. 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. Diameter of duct x 3 14 return air duct in square inches.

Therefore your return air duct and grill size will be 24 by 24 inches tip. Return air ducts are necessary for just about every room. Return vents also provide air circulation. A cold air return vent is necessary for optimal functioning of your heating system.

Return cold air from registers to the furnace so that it will run properly. Product is knocked down for shipping and must be. The hot air goes up into the plenum and from there flows to the supply trunk line image 3 where it is distributed through vents throughout the rest of the home. 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.

The conditioned air then re circulates back into the system as needed. Yes if your house is either hot or cold i ll bet you have inferior or lacking return air ducts. 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. They do precisely what the name implies.

Can accept any size collar up to 18 in.