Supply And Return Air Ducts

Duct board return air box.

Supply and return air ducts.

A person can be forgiven for not knowing much about their home s air duct system. The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. This air travels from your heating and cooling system through your ductwork and out of the supply vents. The cross sectional areas of the supply ducts and return ducts at the furnace or air handler should be about the same size.

Air ducts and vents are part of a building s heating ventilation and air conditioning hvac system. If the supply ducts are in the floor then the return air should be located up high. Ductwork too small or duct sizes mismatched between the air handler supply plenum return air plenum blower assembly cooling coil. It plays a vital role in the home s forced air heating and cooling system performing its job quietly and without much attention.

Supply vents and return vents. Simply measure and cut to size using tin snips to match the supply opening of the air handler furnace or evaporator coil. The supply vents which push air through the duct work must be placed properly. Can accept any.

During hot weather you turn on the air conditioner and cooling coils inside the plenum image 4 then cool the air which is then distributed throughout the house. There are two types. See the sketch at above left. More product details close.

The return air ducts in an hvac system are especially liable to get taken for granted even though their part in heating and cooling your home is just as essential as supply ducts. The return vents in your home suck the air from your rooms into your return ducts and back to your heating and cooling system. Transfer grilles door undercuts and wall grilles are all acceptable means to allow air to flow around the house. Ceiling jumper ducts can connect rooms to make this easier even leaving doors open plays an important role.

You can easily spot your supply vents because they are the only ones you can feel conditioned air coming from. What s the best location for return air ducts. The conditioned air then re circulates back into the system as needed. Supply air from furnaces and air conditioners should be on outside walls.

One thing to remember is that you must have enough supply vents vents blowing air out and return vents vent sucking warm air back in the air conditioner. Building cavity space alone should not be used as a supply or return air pathway. 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. A duct blaster test can be used to detect duct leakage and to confirm proper air flow at each duct supply outlet.

You need a load calculation to make sure the furnace is large enough to supply the new room. If your indoor air handler is the heart of the system the supply ducts are the arteries and the return ducts are the veins.