Top 5 Reasons Your Air Conditioner Might Be Struggling in the Summer Heatwave — Especially in Naperville, Wheaton, Glen Ellyn, Lombard, and Surrounding DuPage County Areas

Michael Bartolomucci • July 5, 2025

Still Feeling the Heat After the 4th? Here’s What Might Be Going Wrong with Your AC!!

The fireworks may be over, but the heat is still on—and if your air conditioner isn’t keeping up, you’re not alone. The days following the 4th of July often bring some of the summer’s most intense heat, especially here in DuPage County, Illinois. If your home in Naperville, Wheaton, Glen Ellyn, Lombard, or Downers Grove feels more like a sauna than a sanctuary, it might be time to investigate what’s really going on with your AC.


At Affordable American Air, based right here in Lombard, IL, we’re proud to help our neighbors across DuPage County stay cool and comfortable. Below are the top 5 reasons your air conditioner might be struggling this summer—and what you can do about it.



1. Dirty Air Filters

In busy homes across Elmhurst, Carol Stream, and Naperville, holiday gatherings can stir up dust, pet hair, and even fireworks smoke—leading to a clogged air filter. A dirty filter restricts airflow, forcing your system to work harder—and cool less.

 Quick Fix: Replace your filter today. If you can’t remember the last time you changed it, it’s definitely overdue.




2. Clogged Condenser Coils

If your outdoor unit is surrounded by grass clippings or July 4th party debris, your AC can’t release heat efficiently. We see this issue often in neighborhoods throughout Downers Grove, Glen Ellyn, and Villa Park.

 Quick Fix: Turn off the power to your system and gently rinse the coils with a garden hose. If they’re really gunked up, give us a call for a professional cleaning.




3. Low Refrigerant Levels

Is your AC running constantly but never reaching your set temperature? Homes in Wheaton, Lombard, and Oak Brook often deal with refrigerant leaks during peak heat.

 What to Do: This isn’t a DIY job—contact us to test the system and recharge it properly if needed.




4. Electrical or Capacitor Issues

Capacitors can fail under extreme heat—especially in older AC units in homes across Addison, Hinsdale, and Westmont. If your system struggles to start or short cycles, this might be your issue.

 Warning Sign: If you hear buzzing or notice your system struggling to turn on, shut it off and call us immediately.




5. It Might Just Be Too Small

If your AC never quite cools your back rooms—or if you recently remodeled or added space to your home in Naperville, Glen Ellyn, or Lisle—it might be undersized.

 Long-Term Solution: We can perform a proper load calculation and help you explore energy-efficient options, including zoning and two-stage systems.




Serving All of DuPage County with Pride

Whether you’re in Lombard, Wheaton, Naperville, Elmhurst, Carol Stream, or anywhere in between, we believe every family deserves a home that’s cool, comfortable, and safe.


 Call Affordable American Air at 630-HVAC-995 or visit our Special Offers page to take advantage of:

 10% off all new air conditioning systems

 $100 off a whole-home dehumidifier


Let’s make sure the only thing heating up your home this summer is the barbecue—not your broken AC.


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