After more than 35 years in the HVAC industry, I’ve learned that most expensive air conditioning repairs begin as small maintenance issues. The good news is that many of them are completely preventable. Here are the seven most common mistakes I see every Oklahoma summer—and how you can avoid them.
- Not Changing Your Air Filter
A dirty filter restricts airflow, makes your system work harder, raises energy bills, and can even lead to a frozen evaporator coil. Check your filter every month and replace it every 1–3 months.
- Closing Too Many Supply Vents
Closing vents increases static pressure and can reduce efficiency while putting unnecessary strain on your system. Keep vents open unless a professional recommends otherwise.
- Setting the Thermostat Too Low
Setting your thermostat to 65° won’t cool your home faster. It simply causes the system to run longer. Choose a comfortable setting, usually 74–78 degrees during summer.
- Ignoring Strange Noises
Grinding, squealing, buzzing, or rattling sounds are often early warnings. Fixing a small problem now can prevent a major repair later.
- Skipping Annual Maintenance
Professional maintenance helps catch weak capacitors, dirty coils, refrigerant issues, and electrical problems before they cause a breakdown.
- Neglecting the Outdoor Unit
Grass, weeds, cottonwood, leaves, and debris around the condenser reduce airflow. Keep at least two feet of clearance around the unit.
- Waiting Until It Completely Fails
Many homeowners wait until the hottest day of the year before calling. If your system isn’t cooling properly, longer run times or higher electric bills are signs it’s time to have it checked.
The Bottom Line
Your air conditioner is one of the hardest-working appliances in your home. A little preventative maintenance can improve comfort, lower energy costs, and help avoid
expensive repairs.
At McKenna Air, we’re proud to provide honest advice and dependable HVAC service for families throughout Oklahoma City and the surrounding communities.
Comfort is our mission, and expertise is our promise.
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