Carrier Factory Authorized Dealer

Available 24 hours
7 days a week!


Schedule An Appointment
Leave Us A Review

3 Common Reasons Your AC System is Overheating

Summer months in Fairfax, VA, can be brutally hot and humid. With the rising temperatures comes the increased possibility of your air conditioner overheating. Learn these three common reasons your AC system may be overheating so that you can repair the problem and keep cooling costs low:

AC Refrigerant Leaks

Your air conditioner cools your home by circulating a refrigerant through its coils. This refrigerant absorbs heat as it evaporates and releases it as it condenses. But this can’t happen if your system is low on refrigerant.

When there’s a leak, the refrigerant level in your AC system drops, and it can no longer effectively absorb heat. As a result, your AC system has to work harder to cool your home, which can cause it to overheat.

Dirty Evaporator Coils

The evaporator coils play an important role in your AC system. They’re responsible for absorbing heat from the air in your home. But if they’re dirty, they won’t do their job properly.

Dirty evaporator coils can cause your system to overheat because they reduce the unit’s ability to absorb heat. As a result, your air conditioner has to work more to compensate, which can lead to damage and overheating.

Incorrectly Sized Air Conditioner

AC units come in different sizes to accommodate various homes. But if your unit is too small or too large for your home, it can cause problems.

A unit that is too small will have to work harder to cool your home, which can lead to overheating. On the other hand, a unit that’s too large won’t run long enough to properly dehumidify the air, which can also lead to overheating. Before you purchase an AC unit, be sure to have a professional assess your home to ensure you get the right size.

For more information or to schedule a tuneup, contact our team at Brennan’s Heating & Air Conditioning today. Our team of experts will be happy to help you keep your air conditioner running smoothly all summer long.

Image provided by iStock

You May Also Like

Must Fix Broken Furnace
February 4, 2026

Is It Easy to Fix a Broken Furnace in Lorton, VA?

When your furnace in Lorton, VA, breaks down, the question isn’t whether you need it fixed, but how quickly and safely you… Continue Reading Is It Easy to Fix a Broken Furnace in Lorton, VA?

Read More…

Variable-Speed Heat Pumps Save Money
January 16, 2026

What Are Variable-Speed Heat Pumps in Stafford, VA?

When winter temperatures plunge and your heating bills climb, homeowners across Stafford, VA, are discovering a smarter way to stay comfortable. Variable-speed… Continue Reading What Are Variable-Speed Heat Pumps in Stafford, VA?

Read More…

Furnace Maintenance
December 3, 2025

Furnace Maintenance in Fairfax Station, VA: Don’t Delay!

The first blast of winter air hits differently in Fairfax Station, VA. One moment you’re savoring the last golden leaves drifting past… Continue Reading Furnace Maintenance in Fairfax Station, VA: Don’t Delay!

Read More…

Compliance Settings
Increase Font Size
Grayscale
Simplified Font
Underline Links
Highlight Links
Reset
Close