By: Patricia Cermignano


Do doors in your house slam close by themselves?

Do you have certain air registers in your house that have little to no airflow coming out of them?

Do you have cold and hot spots throughout your house?


If you answered YES to any of the above questions, you may have an airflow issue with your HVAC system. Without the proper airflow for your heating and cooling system, your HVAC equipment can become overheated or could consume excess amounts of energy. 

There are several common causes of improper airflow throughout your HVAC system that you should be aware of. This list includes but is not limited to:

  • Clogged Air Filters
  • Blocked or Obstructed Vents and Registers
  • Blocked Duct Work
  • Leaky Duct Work
  • Dirty Coil
  • Oversized or Undersized HVAC Unit
  • Low Levels of R-22 or R-410A
  • Issues with Thermostat
  • Slow or Broken Fan

If you ignore these issues for too long, your HVAC system could fail, and you may be forced to get a new system which could be costly. Luckily, there are easy and inexpensive ways for you to improve your HVAC system's airflow issues on your own that will help improve your home's comfort and system efficiency.

  • Check/Change Air Filters-
    • Every month, check the air filters in your HVAC system to see if they need to be changed. Typically, an air filter can last 1-3 months, depending on the type of filter; however, during peak times of use such as winter or summer, the filter may become dirty or blocked at a faster rate and require being replaced sooner than anticipated.
  • Check Indoor Vents-
    • Inspect all vents within your house to ensure that no furniture or rugs are blocking or obstructing them. All vents should be open and have a clear path for air to pass through.
  • Check Outdoor System-
    • Every month, it is important to check your outdoor condensing unit or heat pump to make sure that it has not become obstructed or blocked with any contaminants. It is not uncommon for grass clippings, leaves or plant growth to blow into the unit throughout the year which can cause the system to become clogged.

Having maintenance performed on your HVAC system each season is very important and can help address and prevent any issues with your HVAC system's airflow. For more information on the HVAC airflow issues or to inquire about our seasonal maintenance agreements, please call Bob Cermignano Air Conditioning & Heating, Inc.'s office at 610-642-6323 or visit us at our website at