When the temperatures rise in Evansville, the last thing you want is to feel warm air coming from your AC vents. If your AC is on but not cooling, don’t panic—there’s usually a fix. I’ve helped plenty of homeowners figure out why their air conditioners aren’t doing their job, and I can tell you this: sometimes it’s something simple, and sometimes you need a pro. Let’s walk through some of the most common issues and quick solutions.
Common Reasons Your AC Is On But Not Cooling
Dirty Air Filters
One of the easiest fixes is also one of the most overlooked. A clogged or dirty air filter restricts airflow, which can cause your system to overheat or blow warm air. If your AC is blowing hot air, check your air filter first.
Quick Fix:
Replace the air filter every 1 to 3 months, depending on usage and if you have pets or allergies.
Thermostat Settings
Believe it or not, the issue could be as simple as incorrect thermostat settings. I’ve had customers call in with no AC, only to find their thermostat was set to “heat” instead of “cool.”
Quick Fix:
Make sure the thermostat is set to “cool,” and the temperature is set lower than the room’s current temperature. Double-check the fan setting too—set it to “auto” for best results.
Low Refrigerant Levels
If your system is low on refrigerant, it can’t properly cool the air. You may notice the unit is running but not cooling, or it’s blowing hot air. This usually means there’s a leak somewhere.
Quick Fix:
This one isn’t really a DIY job. You’ll need to call a licensed technician—like one of us here at Brackett Heating, Air & Plumbing. We can check for leaks and recharge the system safely.
Blocked Outdoor Unit
Your outdoor unit needs room to “breathe.” If it’s surrounded by leaves, dirt, or weeds, it can’t release heat properly. That can cause your AC to be on but not cooling your home.
Quick Fix:
Turn off the power and gently clean around the outdoor unit. Remove debris, trim back plants, and use a garden hose to rinse off dirt.
Frozen Evaporator Coils
When your AC coils freeze, they can’t absorb heat—making the system useless. You may notice your AC runs but there’s no cool air coming out.
Quick Fix:
Turn off your system to let the coils thaw. Check for dirty filters or low refrigerant, which are common causes. If it freezes up again, give us a call.
When to Call a Professional
Some issues are quick and easy. But when your system continues to have problems—or if you’re dealing with no AC in the middle of summer—it’s time to call in a pro.
Here at Brackett Heating, Air & Plumbing, we’ve been helping homeowners across Evansville and the tri-state area since 1949. We’re fully licensed, insured, and proud to stand behind what we call the Brackett Difference—top-notch service, honest pricing, and a commitment to doing things right the first time.
Prevent AC Problems Before They Start
Want to avoid these problems in the future? Here are a few tips I always share with my customers:
Schedule Routine Maintenance
An annual AC tune-up can catch small problems before they become big ones. Our techs clean the system, check refrigerant levels, test airflow, and make sure everything runs like it should.
Keep the Area Around Your Outdoor Unit Clear
Make it part of your regular yard maintenance to trim back plants and sweep away leaves or grass clippings from around your condenser unit.
Change Your Filters Regularly
A clean filter is the easiest and cheapest way to improve airflow and help your system run better and longer.
Trust the Brackett Difference
Dealing with an AC that’s on but not cooling isn’t just annoying—it can be uncomfortable and even unsafe during a heatwave. If the simple fixes don’t work, don’t hesitate to reach out.
At Brackett Heating, Air & Plumbing, we’ve built our reputation over generations by doing the job right with honesty and care. Whether it’s a quick repair or a full system check, we’ll be there to help keep your home cool and comfortable.
Need help fast? Contact Brackett Heating, Air & Plumbing today and experience the Brackett Difference for yourself.
