How to Fix Poor HVAC Airflow

David Rampey ·

Airflow problems compromise your home comfort. Is the air coming from your air supply registers too little? Or maybe there's a particular vent that isn't blowing any air at all. These are symptoms of poor HVAC airflow, which could make you barely feel the difference in temperature even if you crank up your HVAC system. Here's a look at the common causes of poor airflow along with what you can do to fix them.

Clogged Air Filter

A clogged filter reduces airflow through your HVAC system. As a result, air distribution becomes inadequate or uneven. Ensure you replace dirty air filters.

Excessively Efficient Filters

Air filters have MERV (Minimum Efficiency Reporting Value) ratings that go from 1 to 16. The higher the rating, the fewer the particles that can pass through the filter's pores. This may seem like a good thing, but extremely powerful filtration could block airflow through your system. If you're using a high MERV filter, make sure your system's motor is rated to handle it. Otherwise, you'll have to replace the filter more frequently to avoid airflow issues.

Closed Registers

Blocked or closed return or supply registers can result in complete loss of airflow. Make sure all your air registers are open.

HVAC Issues That Require Professional Repair

A number of HVAC issues that affect airflow require the help of a professional. For example, air ducts that have small cracks or holes can cause loss of conditioned air and too little air to come out of your supply registers. An HVAC professional can seal the ducts from the inside out through a process called Aeroseal, which significantly improves airflow.

Other problems that require a professional fix include:

Poor HVAC airflow can cause system failure, so make sure you address the problem quickly. Remember, almost all causes of airflow problems can be mitigated with regular preventive maintenance. Contact us at Air Assurance if you need reliable HVAC repair and maintenance services in the Broken Arrow area.