Home AC Not Cooling? Causes & Solutions
When your home AC is not cooling, it can be frustrating, especially during peak summer months. Several factors contribute to this issue, ranging from simple maintenance problems to major system failures. In this guide, we'll cover detailed reasons why your home AC may not be cooling and provide step-by-step solutions to fix each problem.
Need AC Repair? Call Now!Common Reasons Why Your AC Isn't Cooling
Clogged Air Filters
Cause: Dust and debris block airflow, forcing the AC to work harder and reducing cooling efficiency.
Solution
Replace filters every 1-3 months. Use HEPA filters for better performance.
Refrigerant Leaks
Cause: Low refrigerant levels due to leaks or improper installation.
Solution
Call an HVAC technician to seal leaks and refill refrigerant.
Thermostat Issues
Cause: Dead batteries, incorrect settings, or faulty placement.
Solution
Replace batteries, set to "Cool" mode, or upgrade to a smart thermostat.
Frozen Evaporator Coils
Cause: Low refrigerant or airflow obstructions.
Solution
Thaw coils, clean filters, and schedule professional inspection.
Dirty Condenser Unit
Cause: Dust/debris on outdoor unit blocks heat transfer.
Solution
Clean condenser with a garden hose every 3 months.
Leaky Air Ducts
Cause: Gaps/cracks in ductwork let cool air escape.
Solution
Seal leaks with duct tape or professional-grade sealants.
FAQs About AC Cooling Issues
Why is my AC running but not cooling? ▼
Possible causes include refrigerant leaks, dirty filters, or thermostat issues.
How do I fix my AC if it’s not cooling? ▼
Check thermostat settings, clean filters, and inspect the outdoor unit.
How do I unfreeze AC coils? ▼
Turn off the AC, let coils thaw, and check for airflow blockages.
When should I call a technician? ▼
If basic troubleshooting fails, contact a certified HVAC professional.
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