How many return ducts do I need?

Having several return vents (ideally one in every room, but even two or three is better than just one) creates consistent air pressure. If you have one return vent, your home is fine. Keep the doors to each room open so air can properly circulate.Click to see full answer. Considering this, are return air ducts required?If you live in a home that has rooms that are either too hot in hot weather or are cold in cold weather you could have a return-air duct issue. Return air ducts are necessary for just about every room. However, there are two rooms that I never place return air ducts – kitchens and baths.Similarly, can you have too much return air? While there is no such thing as too much return air for the equipment (actually, there is, and it causes fan cavitation, but very rare), this CAN be an issue for the house. It has the potential to throw off pressures in different areas of the house. Subsequently, one may also ask, where do you put return air vents? Place your cold air return vents on the inside walls of buildings at the lowest point. The return vent pulls cold air from the bottom of the room and returns it to the furnace to be reheated and returned as warm air. Unlike supply vents, return vents do not need to be cased in metal.How many return air vents should a house have?Having several return vents (ideally one in every room, but even two or three is better than just one) creates consistent air pressure. If you have one return vent, your home is fine. Keep the doors to each room open so air can properly circulate.