Handling HVAC Airflow Problems

Handling HVAC Airflow ProblemsAirflow problems are implicated in a wide variety of HVAC issues. The entire system—from furnace and air conditioner components to the blower to the network of ducts—plays a role in maintaining proper airflow. When the cubic feet per minute of airflow drops below the designed specification, heating/cooling performance and energy efficiency decline, operating costs and component wear and tear increase and indoor air quality stagnates.

Airflow problems can originate at several points in the system and manifest diverse symptoms. Here are a few of the most common causes and cures.

Clogged Filter

If the system air filter appears dirty and clogged, replace it with a quality pleated filter and see if airflow improves. If that does the trick, just keep changing the air filter at least every other month. No improvement? Time to call for qualified professional service.

Duct Leaks

In a home over 10 years old, it’s not uncommon that 25% or more of the HVAC airflow may be escaping into the attic or crawl space due to ductwork leakage. The only way to know for certain is to schedule a duct inspection and pressure test. Once the extent of leakage has been determined, your HVAC contractor can utilize techniques to pinpoint the leaks, then suggest options to seal the ducts.

Closed/Obstructed Vents

Closed supply vents or blocked return vents not only affect airflow into a given room, they can unbalance proper flow throughout the entire house. A furnace starved for airflow due to closed vents can overheat and be damaged. Ideally, all vents in the house should always remain open.

Defective Dampers

Internal ductwork dampers control airflow to accommodate the size of each room. Over the years, adjustment screws may loosen and the damper may gradually reduce or shut off airflow. An internal inspection by a qualified service tech is required to locate and repair defective dampers and restore proper airflow.

For professional solutions to airflow problems contact the experts at Paitson Bros. We’ve kept home HVAC systems operating at maximum performance and efficiency since 1922.

Our goal is to help educate our customers in Terre Haute, Indiana about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, download our free Home Comfort Guide or call us at 812-645-6859. 

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    Jeff Paitson Jeff Paitson is a third generation business owner who continues to run the business with the same values that have been passed down from previous generations since 1922.

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