When cooling stays weak after a recent repair, homeowners often worry another big part has failed. In mid-September, a Fort Smith Comfort Club (our maintenance plan) member called because the home still was not staying cool after an August visit that had taken care of the capacitor (the part that gives the motor its starting kick), a cleaning of the condenser (the outdoor unit), and the refrigerant (the fluid that carries heat out of your home).
What Our Technician Found
On this follow up visit, our technician found an extremely dirty return air filter. A clogged filter chokes off airflow, which can cause weak cooling, freeze ups, and a system that turns on and off too often, even when the outdoor parts are fine.

What We Completed
- Checked the system for ongoing weak cooling.
- Checked the airflow and took photos of the dirty return filter.
- Went over what we found with the homeowner, along with the August repairs.
The Result
The homeowner can see that the filter was badly blocking airflow on this visit. Replacing the filter and keeping up with it is the first thing to do. Learn more about our AC maintenance.
What Homeowners Can Learn From This Job
- Check the filter before assuming another part failed. It is still the most common airflow problem.
- Past repairs do not replace filter changes. A clean outdoor unit cannot push air through a clogged filter.
- Photos make it clear. A packed filter is hard to argue with.
Need Heating and Cooling Service in Fort Smith?
Our team serves homeowners across Fort Smith and the River Valley. If cooling is weak after a recent repair, call us or book online and we will take a look.