When the summer heat rolls in, the last thing you want is your AC running but not cooling. It’s both frustrating and uncomfortable, leaving you searching for relief. Don’t sweat it—we’ve got you covered! Many Ohio homeowners face similar home AC problems, but with the right know-how, you can troubleshoot common issues or know when it’s time to call the pros.
Read on for tips on diagnosing why your AC isn’t blowing cold air, quick DIY fixes, and how Five Star Home Services can help.
Why Is My AC Running But Not Cooling?
When your AC is running but not cooling, the most frequent culprits include a dirty air filter, thermostat issues, low refrigerant, clogged condenser coils, or a failing compressor. Essentially, your AC might not be effectively transferring heat due to airflow restrictions, refrigerant issues, or component malfunctions. Simple AC troubleshooting could help you discover the problem. If you’re still not feeling the cool air, let’s dive deeper into the possible causes and their solutions.
1. Dirty Air Filter
A clogged air filter can block airflow, making it impossible for your AC to cool your home effectively. This forces your system to work harder, reduces efficiency, and may even lead to overheating.
What to do: Check your air filter. If it’s dirty, replace it immediately. Aim to change air filters every 1–3 months, especially during heavy usage in summer.
2. Incorrect Thermostat Settings
Sometimes, the issue isn’t with your AC at all but with your thermostat settings. A thermostat set to the wrong mode or temperature can make your space feel like the cooling system isn’t working.
What to do: Ensure your thermostat is switched to “Cool” and set the temperature lower than the room temperature.
3. Low Refrigerant Levels or a Leak
Low refrigerant or a refrigerant leak can prevent your AC from cooling properly. Since refrigerant is essential for heat transfer, any deficiency will cause inefficiencies.
What to do: Call a licensed HVAC professional to inspect and safely resolve refrigerant leaks. Refrigerant repairs require specialized tools and training, so avoid attempting a DIY fix.
4. Dirty Condenser Coils
Condenser coils in your outdoor AC unit release heat from your home. If these coils are covered in dirt or debris, the heat can’t escape, which impacts cooling performance.
What to do: Turn off the power and carefully clean your outdoor condenser unit. Remove dirt and debris to prevent clogging.
5. Blocked Vents or Ductwork Issues
Blocked air vents or leaky ductwork can impact airflow, resulting in uneven cooling or no cooling at all.
What to do: Ensure vents are unobstructed and open. If your problem persists, you may need professionals to inspect and repair your ductwork.
6. Faulty Compressor
The compressor, sometimes referred to as the “heart” of the AC system, circulates refrigerant between indoor and outdoor units. If the compressor fails, your AC won’t be able to blow cold air.
What to do: Listen for unusual noises, like clanks or buzzing, coming from your system. Call a professional to diagnose and fix compressor problems.
7. Frozen Evaporator Coils
Frozen evaporator coils can result from poor airflow or refrigerant issues, both of which stop your AC from cooling.
What to do: Turn off your AC to allow the evaporator coils to thaw completely. Check your air filter, and if the issue persists, contact a technician.
8. Electrical Problems
Issues like faulty wiring, a tripped circuit breaker, or malfunctioning electrical components could prevent your AC from working efficiently.
What to do: Avoid DIY fixes for electrical issues. Call a professional for a safe and thorough inspection.
9. Aging or Undersized AC Unit
If your AC unit is too small for your home or is nearing the end of its lifespan, it may struggle to cool during hot, demanding summer days.
What to do: Consider upgrading to a newer, energy-efficient model. At Five Star Home Services, we’ll help you find the perfect AC for your home and budget.
When to Call an AC Repair Professional
If these troubleshooting tips don’t fix your HVAC problems, it’s time to call in a professional. Here are key signs you need expert HVAC repair:
- Refrigerant Leaks: Licensed HVAC technicians are trained to safely handle refrigerant repairs and recharges.
- Loud or Strange Noises from the Compressor: Odd sounds could mean serious mechanical issues.
- Ongoing Frozen Coils: Persistent ice buildup points to deeper air conditioning system problems.
- Electrical Failures: DIY electrical work is dangerous—leave it to the experts to ensure safety.
Don’t ignore these warning signs—professional AC repair can save time, money, and keep your system running efficiently!
Stay Cool with Five Star Home Services
Don’t endure Ohio’s summer heat with an AC that’s not blowing cold air. Whether it’s basic maintenance or an urgent repair, Five Star Home Services is here to help.
Call us now or book online to keep your home cool all summer long. Our AC 101 Series is filled with expert troubleshooting tips to help you feel comfortable in your home.
Your comfort is just one call away. When you need it fixed today, call Five Star. Schedule today and get $100 off your AC repair!
