Can a cold air return be covered?

Keep couches, chairs and other large pieces of furniture at least 10 inches away from your cold air return vents. Avoid covering your cold air return vents with curtains, drapes or rugs. Clogged air filters can also cause cold air return blockages.

Is it bad to cover return vents?

Effects of Covering Return Vents The most obvious effect of covering return vents is that the air can’t get back to the HVAC system. Covering even one return vent can throw off the system’s operation. The system needs to suck the air back into the furnace while it’s running, or it throws off the balance and pressure.

Are cold air return vents necessary?

While it is a myth that air return grilles are required in each and every room in the house, it is definitely necessary to have more than one of these grilles installed at strategic places in the house. Likewise, you can also install these in rooms that have a high footfall or usage in the house.

Should every room have a cold air return?

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.

What is the purpose of cold air return vents?

The return registers draw stale air into the ductwork, where it’s pulled through the filter to capture dust and debris and then delivered back to the HVAC equipment for reconditioning. However, the most important function of the cold air return registers is ensuring ample airflow through the HVAC system.

How much clearance does a cold air return need?

All your air vents need at least six inches of clearance from all furniture, drapes or other household items to ensure proper system breathing.

Is it OK to put furniture in front of a return vent?

Most people would tell you, no, you cannot put furniture in front of an air return vent. The bottom line is as long as the furniture piece is open on all sides and the bottom allowing the return air vent to draw in air to the heating and cooling system unobstructed, it should be fine.

Where should my cold air returns be located?

Where are cold air returns located? Cold air returns are located on interior walls in a home, typically close to the floor or low on the wall. You want to make sure that cold air return vents are not blocked or covered by furniture so that your home can get proper air circulation.

How big should my return air duct be?

Generally, if you are using a Duct Sizing Chart or calculator (such as the Trane Ductulator), size the re- turn ducts for 0.05 inches/100 ft (0.40 Pa/m) based on the expected airflow through that return air duct. The total sum of air from all the returns should be at least 250 CFM/nominal ton (33 l/s per-kW).