7 Reasons Your AC System Is Blowing Hot Air

When the Texas heat is at its peak, the last thing you want is an air conditioner that’s blowing warm air. At Air & Drain Works, we understand how crucial a functioning AC system is for comfort in San Antonio. If an AC blows warm air, it’s essential to identify the cause promptly. We provide reliable San Antonio air conditioner repairs to help you keep your cool.

Below are seven common reasons your cooling system might be underperforming and how to address them.

1. Thermostat Settings Are Incorrect

Before diving into complex diagnostics, check your thermostat. Ensure it’s set to “cool” and check that the displayed temperature is set lower than the current room temperature. Sometimes, settings can be inadvertently changed, leading to an AC that blows warm air.

2. Dirty Or Clogged Air Filters

Air filters trap dust and debris, but when they become clogged, airflow is restricted. Clogs can cause the system to overheat and blow hot air. Regularly filter replacements or cleanings ensures optimal airflow and cooling efficiency.

3. Refrigerant Levels Are Low

Refrigerant is vital for cooling the air in your home. If there’s a leak or the refrigerant levels are low, your air conditioner can’t cool effectively, resulting in warm air output. Handling this HVAC chemical requires professional expertise due to environmental regulations and system complexity.

4. Evaporator Coils Are Frozen

Frozen evaporator coils can restrict the cooling process. This issue often results from restricted airflow due to dirty filters or blocked vents. If you notice ice on the coils, turn off the system to allow them to thaw and address any airflow issues. Our team can perform timely AC repairs to prevent costlier damage.

5. Dirty Condenser Coils

The condenser coils, located in your outdoor unit, help release the heat pulled from your home. When they’re dirty or covered in debris, they can’t do their job, and you’re left with an AC blowing hot air.
Signs your condenser coils may be dirty include:

• Warm air blowing from vents
• Higher-than-usual energy bills
• Unit runs continuously without cooling
• Visible dust, dirt or leaves around the outdoor unit

Make sure to keep the area around your outdoor unit clean to prevent potential freezing. Scheduling seasonal air conditioner tune-ups is another highly effective method to prevent coil issues.

6. Electrical Issues Or Tripped Breakers

Sometimes, the indoor unit runs, but the outdoor unit doesn’t due to electrical issues or tripped breakers. This mismatch can lead to warm air circulation. Check your circuit breakers and ensure all components have power. If problems persist, consult an AC repair tech from Air & Drain Works.

7. Ductwork Leaks Or Blockages

Leaky or blocked ducts can cause cooled air to escape before reaching your living spaces, making it seem like your air conditioner is blowing hot air. Inspect your air ducts for visible tears that can lead to leaks or obstructions. Have them sealed or repaired by our team as necessary.

Air & Drain Works: Providing The Best San Antonio AC Repair

Experiencing an AC that blows warm air can be frustrating, especially during San Antonio’s scorching summers. At Air & Drain Works, we’re committed to ensuring your home remains a cool haven.

Our team of professional HVAC technicians is ready to diagnose and resolve any air conditioner issue promptly. Don’t let the heat get the best of you — contact us today for reliable and efficient cooling solutions.