Home » Blog » Why Is My AC Blowing Out Warm Air?

Why Is My AC Blowing Out Warm Air?

The AC is blowing out warm air in this Las Vegas home, so this couple tries to get to the root of the problem.

Key Takeaways

Question: Why is my AC blowing out warm air?

Answer: Common reasons for an AC blowing warm air include dirty air filters, frozen evaporator coils, incorrect thermostat settings, tripped breakers, and refrigerant leaks. Addressing these issues can help restore cool air.

It’s the middle of summer, and just when you need it most, your AC unit has decided to stop blowing cool air. How frustrating! When the Las Vegas heat is at its peak, the last thing you want is for your air conditioning system to fail. If your AC is blowing warm air, there are several potential reasons behind this issue. Let’s explore these common causes and what you can do to address them.

1. Dirty Air Filters

One of the simplest yet most common reasons your AC might be blowing warm air is a dirty air filter. Air filters play a crucial role in maintaining proper airflow through your system. When they get clogged with dust, dirt, and debris, the airflow is restricted, making it difficult for the unit to cool your home effectively.

Solution: Check your air filters and replace them if they appear dirty. Regular maintenance, including changing filters every 1-3 months, can prevent this problem.

2. Frozen Evaporator Coils

Another common culprit is frozen evaporator coils. These coils can freeze up due to condensation and insufficient airflow, preventing the proper transfer of heat and causing your AC to blow warm air.

Solution: If you suspect frozen coils, turn off your AC unit and let the coils thaw out for at least 24 hours. To avoid this issue in the future, ensure that your system has adequate airflow and consider scheduling regular maintenance checks.

3. Thermostat Settings

Sometimes, the issue can be as simple as incorrect thermostat settings. If your thermostat isn’t set correctly, your AC unit might not be signaling to cool your home properly.

Solution: Verify that your thermostat is set to the ‘cool’ mode and that the fan is set to ‘auto’. This ensures that the fan only runs when the system is cooling the air, rather than circulating warm air continuously.

4. Tripped Breaker

If your AC unit isn’t receiving power, it won’t be able to cool your home. A tripped breaker is a common issue that can cut off the electricity supply to your HVAC system.

Solution: Check your electrical panel to see if the breaker for your AC unit has tripped. If it has, reset it and see if this resolves the issue. If the breaker continues to trip, it could indicate a more significant electrical problem that requires professional attention.

5. Refrigerant Leaks

Refrigerant is essential for your AC to cool your home effectively. If there’s a leak, your system won’t have enough refrigerant to operate correctly, which can lead to warm air being blown from your vents. Symptoms of a refrigerant leak include a hissing noise from the unit, a significant increase in your energy bills, or frozen coils.

Solution: Refrigerant issues should always be handled by a professional. If you suspect a refrigerant leak, call an HVAC technician to evaluate and repair the system.

When to Call a Professional

While some issues, like changing air filters or checking thermostat settings, can be handled on your own, other problems require professional expertise. If your AC unit continues to blow warm air despite your best efforts, it’s time to call in the pros. A licensed HVAC technician can diagnose and fix the issue efficiently, ensuring your home stays cool and comfortable.

Contact Evolve Air Conditioning and Heating

Should you notice or experience any of the issues above, don’t hesitate to reach out for professional help. At Evolve Air Conditioning and Heating, we specialize in diagnosing and repairing AC issues quickly and effectively. Call us today at 702-809-6617 to schedule an evaluation of your system. Don’t let the summer heat get the best of you—trust Evolve to keep your home cool and comfortable!

By addressing these common AC issues, you can ensure your system runs smoothly throughout the summer. Remember, regular maintenance and timely professional assistance are key to preventing and resolving air conditioning problems. Stay cool, Las Vegas!

FAQ

Why is my AC blowing warm air instead of cool air?

Your AC might be blowing warm air due to dirty air filters, frozen evaporator coils, incorrect thermostat settings, tripped breakers, or refrigerant leaks. Regular maintenance and timely repairs can help resolve these issues.

How do dirty air filters affect my AC’s performance?

Dirty air filters restrict airflow, making it difficult for your AC to cool your home effectively. This can cause the unit to blow warm air. Checking and replacing air filters every 1-3 months can prevent this problem.

What should I do if my evaporator coils are frozen?

If you suspect frozen evaporator coils, turn off your AC unit and let the coils thaw for at least 24 hours. Ensure your system has adequate airflow and schedule regular maintenance to prevent this issue.

How can thermostat settings impact my AC’s cooling ability?

Incorrect thermostat settings can cause your AC to blow warm air. Ensure the thermostat is set to ‘cool’ mode and the fan is set to ‘auto’ to prevent continuous circulation of warm air.

What can cause a tripped breaker in my AC unit?

A tripped breaker can cut off power to your AC unit, preventing it from cooling your home. Check your electrical panel and reset the breaker if necessary. If the breaker continues to trip, contact a professional to investigate further.

How do refrigerant leaks affect my AC?

Refrigerant is essential for cooling your home. A leak can reduce refrigerant levels, causing your AC to blow warm air. Symptoms of a refrigerant leak include a hissing noise, increased energy bills, and frozen coils. Contact a professional to handle refrigerant issues.

When should I call a professional for AC issues?

If your AC continues to blow warm air despite troubleshooting efforts like changing filters and checking thermostat settings, it’s time to call a licensed HVAC technician. Professionals can diagnose and repair more complex issues efficiently.

What can I do to prevent my AC from blowing warm air?

Regular maintenance is key to preventing AC issues. This includes changing air filters, scheduling professional check-ups, ensuring proper airflow, and addressing minor problems before they escalate.

Leave a Comment

Scroll to Top

JOIN OUR MAILING LIST AND

$99 tune-up

Special