How to Remove the Blockage in Your VentsA vent blockage means that your furnace ducts are obstructed, and this means one or more rooms won’t receive efficient heating or cooling from your HVAC system. Vent blockages occur for a number of reasons, such as clogged filters or pieces of filter blown into ductwork or insulation getting pushed into a duct. Whatever the reason, vent blockages compromise the efficiency of your HVAC system.

To identify and remove a vent blockage or increase airflow, use the following steps:

  1. Check the HVAC system’s air filter. If it is clogged, it will seem like your vents are blocked because air flow may be reduced. If it is not dirty, remove it anyway to conduct a vent blockage test.
  2. To run a vent blockage test, turn on your HVAC system so the fan blows. As it is running, check the airflow in every vent in your home. If you find one with noticeably lower airflow than the rest, the blockage is probably in that location.
  3. Remove the vent cover of the blocked vent and check behind the grill. Remove any debris you find, such as pieces of paper, dusts balls, and broken filter pieces. Shine a flashlight down into the ductwork to make sure nothing is trapped at the bend in the pipe.
  4. Examine the ductwork and make sure there are no loose seams or holes in the ducts, which may reduce airflow.
  5. Check the butterfly valves, which are located on the outside of the ducts. These valves control airflow into the room each duct serves. Closed valves are turned so the handle is perpendicular to the ductwork. If the valve is open, the handles will run parallel to the ductwork. Make sure the butterfly valves are in the open position to ensure you’re getting the maximum airflow through the ductwork.

For more help with removing vent blockages in your central Arizona home, contact us at Wolff Mechanical. Our goal is to help educate our customers in the Phoenix Valley area of Arizona about energy and home comfort issues (specific to HVAC systems).

Our goal is to help educate our customers in the Phoenix Valley area of Arizona about energy and home comfort issues (specific to HVAC systems). 

Image courtesy of Shutterstock