5 Reasons Why Your AC Is Blowing Warm Air

When your air conditioner is blowing warm air instead of cold air, it can be a major source of frustration, especially during the scorching Texas heat. At Service First Air Conditioning and Heating, we understand the importance of keeping your living space cool and comfortable. That’s why we offer reliable air conditioner repair in San Antonio and beyond!

From strange air conditioner sounds to electrical issues, we handle your comfort needs with care. If your AC is blowing warm air, it’s time to diagnose the issue and get it fixed. Below are five common reasons for an air conditioner blowing warm air.

1. The Air Filter Is Dirty

A clogged or dirty air filter is one of the most common reasons your AC is blowing warm air. Air filters trap dirt, dust and other particles to keep the air in your home clean. Over time, these filters can become clogged, restricting airflow and causing the system to work harder. This can prevent your AC from cooling your home effectively.

Solution:

• Replace your air filter on a schedule (every 1-3 months)
• Choose high-quality filters designed to capture more particles
• Check your filters frequently during peak cooling seasons to ensure proper airflow

2. The AC Has A Refrigerant Leak

If your air conditioner is low on refrigerant, it may have a difficult time cooling the air. This issue can cause warm air to blow from the vents. Leaks in the refrigerant line are a common problem, and they need to be repaired quickly to prevent damage to your system.

Solution: Contact Service First AC for a professional inspection. One of our licensed technicians will locate the leak and recharge the refrigerant.

3. The Evaporator Coil Is Frozen

The evaporator coil absorbs heat from the air in your home. If the coil freezes, your air conditioner can no longer absorb heat, which may lead to warm air blowing out of your vents. Frozen coils often occur from airflow restrictions, low refrigerant or dirty filters.

Solution: Turn off your AC and let it thaw. Check and replace the air filter if it’s clogged. If this doesn’t work, schedule professional service to check and ensure the coils are cleaned and functioning properly.

4. There’s A Problem With The Thermostat

Sometimes, the issue lies with your thermostat. If the device is malfunctioning or not calibrated, it may not send the correct signals to your unit. This problem can lead to the air conditioner blowing warm air because the system thinks it doesn’t need to cool your home.

Solution: The fix may be as simple as recalibrating or replacing your thermostat. A properly functioning thermostat ensures your AC gets the right signals to cool your home effectively. If a simple recalibration doesn’t work, you may need to get in touch with a professional.

5. The Compressor Is Malfunctioning

The compressor is the heart of your cooling system. It compresses the refrigerant and directs it through the coils. If the compressor is malfunctioning or has failed, your system will not cool properly, and warm air may blow out instead.

Solution: A faulty compressor will require professional repair or replacement. Contact Service First Air Conditioning and Heating for a full diagnostic and solution.

Don’t Let Warm Air Ruin Your Comfort

If your air conditioner is blowing warm air, it’s crucial to address the issue as soon as possible to avoid further damage. Service First Air Conditioning and Heating is here to help with expert AC repairs and maintenance services in San Antonio. Whether it’s a dirty filter, refrigerant leak or compressor problem, we have you covered.

Don’t wait for the heat to get worse. Contact us today for fast and reliable air conditioner repair services!