Why Your AC Isn’t Blowing Cold Air (And How to Fix It). When the Las Vegas heat reaches scorching levels, the last thing you need is an air conditioner that won’t blow cold air. If your AC is running but not cooling your home, there could be several underlying causes. At Active Plumbing & Air, we have over 30 years of experience providing affordable and high-quality AC repairs for homeowners in Las Vegas. Below, we’ll explore some of the most common reasons your AC isn’t working properly and what you can do to fix it.
Common Reasons Your AC Isn’t Blowing Cold Air
1. Dirty or Clogged Air Filter
A clogged air filter restricts airflow, reducing your AC’s ability to cool your home efficiently. When airflow is restricted, the evaporator coil can freeze, further preventing your system from producing cold air.
How to Fix It:
• Check your air filter every one to three months and replace it if it appears dirty.
• If you have pets or allergies, consider changing it more frequently.
• Schedule routine AC maintenance to ensure optimal performance.
👉 Need help with AC maintenance? Schedule a service today.
2. Low Refrigerant Levels or a Refrigerant Leak
Refrigerant is essential for cooling your home. If your AC is blowing warm air, it may be due to low refrigerant levels or a refrigerant leak.
Signs of a refrigerant issue:
• Warm air blowing from the vents
• Hissing sounds from the AC unit
• Ice buildup on refrigerant lines
How to Fix It:
• Call a licensed HVAC technician to check for leaks and recharge your refrigerant.
• Never attempt to add refrigerant yourself—it requires professional handling.
3. Thermostat Issues
Your thermostat settings could be the reason your AC isn’t blowing cold air.
How to Fix It:
• Make sure the thermostat is set to “cool” mode and the temperature is lower than the room temperature.
• Replace the batteries if it’s a battery-powered thermostat.
• If your thermostat is outdated, consider upgrading to a programmable or smart thermostat for better efficiency.
Looking for expert AC repairs? Contact us today.
4. Frozen Evaporator Coils
If your AC’s evaporator coils freeze, the system won’t be able to absorb heat properly, leading to warm air or reduced airflow.
What causes frozen coils?
• Dirty air filters
• Refrigerant issues
• Blocked vents or registers
How to Fix It:
• Turn off your AC and let the coils thaw.
• Replace or clean the air filter.
• Check for airflow obstructions around vents and registers.
• If the issue persists, call a professional AC repair service.
5. Faulty or Dirty Condenser Coils
Your outdoor condenser coils are responsible for releasing heat. If they’re covered in dirt or debris, your system won’t cool efficiently.
How to Fix It:
• Turn off the power to your AC.
• Gently clean the coils with a garden hose.
• Remove any debris or vegetation blocking airflow.
• If deep cleaning is needed, schedule professional AC maintenance.
When to Call a Professional AC Technician
While some AC issues can be resolved with simple fixes, others require professional HVAC repair. If you experience:
✔ Persistent warm air despite troubleshooting
✔ Strange noises or leaks from your AC unit
✔ Frequent system short cycling
✔ Unexplained increases in energy bills
Call Active Plumbing & Air at 702-553-1171 for fast, reliable AC repair services.
Prevent Future AC Issues with Regular Maintenance
To keep your AC running efficiently, schedule routine AC maintenance at least once a year. Active Plumbing & Air offers:
✔ Comprehensive AC tune-ups
✔ Refrigerant level checks
✔ Filter replacements
✔ Coil and drain line cleaning
More Than Just AC Repairs – We Also Specialize in Plumbing Services
At Active Plumbing & Air, we don’t just handle AC repairs—we also provide top-rated plumbing services in Las Vegas, including:
• Water leak detection and repair to conserve Las Vegas’ most valuable resource—water.
• Water heater installation for both tank-type and tankless systems.
• Emergency shut-off valve installation to protect your home from unexpected leaks.
Check out our Plumbing Services for more information.
Why Choose Active Plumbing & Air?
✅ Family-Owned & Operated – Over 30 years serving Las Vegas homeowners.
✅ Certified by the Las Vegas Valley Water District – Trusted for water conservation solutions.
✅ Highly Rated – 4.9 Stars on Google with 819 Reviews!
✅ Affordable Pricing & Quality Work – Guaranteed!
Don’t let the Las Vegas heat take over your home! If your AC isn’t blowing cold air, contact Active Plumbing & Air today for expert HVAC solutions.
📞 Call us at 702-553-1171 for fast and reliable AC repair!