AC not cooling is a common and frustrating problem for homeowners in West University, especially during Houston’s relentless heat. At Cool Techies, we understand how urgent it is to restore comfort fast. That’s why we’ve put together this comprehensive guide to help you troubleshoot, understand, and fix the most frequent air conditioning issues, so your home stays cool and stress-free.
Top 10 Reasons Why Your AC Is Not Cooling (and How to Fix Them)
1. Dirty Air Filter
Problem: A clogged filter blocks airflow, making your system work harder.
Fix: Replace or clean your filter every 1–3 months.
2. Thermostat Issues
Problem: Incorrect settings or dead batteries can prevent cooling.
Fix: Double-check settings and replace batteries if needed.
3. Refrigerant Leaks
Problem: Low refrigerant reduces cooling power.
Fix: Call a professional—handling refrigerant requires certification.
4. Frozen Evaporator Coils
Problem: Restricted airflow or low refrigerant can freeze coils.
Fix: Turn off the system to thaw and call for service.
5. Dirty Condenser Coils
Problem: Outdoor coils covered in dirt can’t release heat.
Fix: Gently hose off the outdoor unit (with power off).
6. Tripped Circuit Breaker
Problem: No power to the AC due to a tripped breaker.
Fix: Check your breaker panel and reset if needed.
7. Blocked Vents or Registers
Problem: Furniture or dust blocking vents reduces airflow.
Fix: Clear all vents and registers.
8. Leaky Ductwork
Problem: Air escapes before reaching your rooms.
Fix: Professional duct inspection and sealing.
9. Aging System
Problem: Older units lose efficiency and power.
Fix: Consider replacement if your system is over 12–15 years old.
10. Incorrect AC Size
Problem: Too small or too large for your home’s needs.
Fix: Get a professional assessment for proper sizing.
Troubleshooting: Quick Reference Chart
| Problem | Quick Fix | When to Call Us |
| Dirty filter | Replace/clean filter | If airflow remains weak |
| Thermostat issue | Check settings/batteries | If still not cooling |
| Refrigerant leak | N/A | Always |
| Frozen coils | Thaw, check filter | If repeats |
| Dirty condenser | Clean gently | If not resolved |
Pro Maintenance Tips from CoolTechies
Prevent AC Not Cooling Problems with These Pro Tips
Annual Maintenance is Key
Schedule professional maintenance each year to catch issues early.
Listen to Your System
Don’t ignore strange noises or smells—these are early warning signs.
Keep Outdoor Units Clear
Regularly clear plants and debris from around your outdoor unit.
When to Call for Professional Help
If DIY fixes don’t restore your AC’s cooling power, or you notice repeated issues, it’s time to call CoolTechies for expert diagnosis and repair in West University.
We’re Your AC Allies in West University
When AC not cooling problems strike, CoolTechies is ready with fast, friendly, and transparent service. We treat your home as if it were our own, explaining every step so you feel confident and cared for.
Need help now? Contact Cool Techies for expert AC diagnosis and repair in West University!
Frequently Asked Questions
1. How often should I replace my AC filter?
Every 1–3 months, or more often if you have pets or allergies.
2. What do I do if my AC freezes up repeatedly?
Turn it off and call a professional—there may be a deeper issue.
3. Can a thermostat really cause cooling problems?
Absolutely! Incorrect settings or dead batteries are common culprits.
By Calixto Armas
