It can be frustrating when your air conditioner starts blowing warm air, especially during our long, hot Virginia Beach summers. Understanding the common causes can help you address the issue promptly. Your friends at MSCO Heating & Cooling urge you to read on to learn some of the reasons why your AC is not functioning properly. For good measure, we’ll also present some preventive measures you can take to prevent hot weather problems.
What Causes the AC to Blow Warm Air?
1. Incorrect Thermostat Settings
Sometimes, the solution is as simple as checking your thermostat. Ensure it’s set to “cool” and the fan is on “auto.” If the fan is set to “on,” it may blow air even when not cooling, leading to warm air from your vents.
2. Restricted Airflow
Proper airflow is essential for your AC to function correctly. Clogged air filters or dirty coils can hinder airflow, causing the system to blow warm air. Regular maintenance, like changing filters and cleaning coils, can prevent this issue.
3. Ductwork Problems
Leaky or damaged ducts can pull in warm air from attics or crawl spaces, mixing it with the cooled air. This reduces the efficiency of your AC and results in warmer air entering your home. Inspect your ducts for leaks and have them sealed if necessary.
4. Electrical Issues
Your AC system comprises indoor and outdoor units. If the outdoor unit loses power due to a tripped circuit breaker, the indoor unit might still run but only circulate warm air. Check your electrical panel for tripped breakers and reset them if needed. If the problem persists, consult a professional.
5. Low Refrigerant Levels
Refrigerants are crucial for cooling your home. Low charge levels, often due to refrigerant leaks, can cause your AC to blow hot air. Signs of low refrigerant include hissing noises or ice on the refrigerant lines. A certified technician should address refrigerant issues, as handling it requires specialized knowledge.
6. Dirty Components
Over time, components like the evaporator coil and condenser can accumulate dirt and debris. This buildup restricts airflow and impairs cooling efficiency, leading to warm air output. Regular cleaning and maintenance of these parts are essential to keep your AC running smoothly.
7. Frozen Evaporator Coil
A frozen evaporator coil can’t absorb heat effectively, causing warm air to circulate. This can result from low refrigerant, poor airflow, or continuous operation without proper maintenance. If you notice ice on your indoor unit, turn off the AC and allow it to thaw. Then, contact a professional to identify and fix the underlying cause.
Preventative Measures to Keep Your Air Conditioning System Running Normally
To keep your AC functioning optimally throughout the summer and avoid warm air issues:
- Regular Maintenance: Schedule annual check-ups with a trusted HVAC service to ensure all components are in good condition.
- Change Filters Frequently: Replace dirty air filters every 1-3 months to keep the cool air flowing.
- Keep Outdoor Unit Clear: Ensure the area around your outdoor unit is free from debris, plants, and obstructions.
- Monitor Thermostat Settings: Set your thermostat to “cool” and the fan to “auto” to prevent unnecessary operation.
How Do I Fix My AC Blowing Warm Air? Call MSCO Heating & Cooling
If your air conditioning is blowing warm air and you’re unsure how to fix it, the experienced team at MSCO Heating & Cooling can provide top-quality AC repairs. Serving the Virginia Beach area since 1955, our expert, TRANE-certified HVAC technicians provide reliable and prompt air conditioning services.
Call us today to schedule a service appointment and ensure your home stays cool and comfortable all summer long!
