Furnace Cold Air Return Duct
These ductwork tips will help balance your air conditioning and heating system.
Furnace cold air return duct. Hvac ductwork sizing is critical for proper heating and cooling in every room. Return air ducting is necessary in almost every room. That would then reduce the flow of conditioned air to that space. In addition its flexibility allows for easier installation in hard to reach areas.
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. 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. For the system to work you have to re circulate the air back to the furnace.
Have to get the air back to the furnace. If you had no return air in your room you would create a positive pressure. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. Can be easily cut to size.
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. Used as a central return vent box filter grill not included. 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. A furnace return system must collect all the air being put out by that system.