Why Is My AC Not Blowing Cold Air?

Categories: Air Conditioning

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Is Your AC Running but Not Cooling?

When summer heat hits and your air conditioner isn’t blowing cold air, it’s more than just an inconvenience—it can signal underlying issues. At Lochard HVAC, Plumbing, and Service, we understand how crucial a functioning AC is for comfort in Piqua, Troy, Sidney, Celina, Tipp City, and Bellefontaine. Let’s explore common reasons your AC might not be cooling effectively and how to address them.​

Common Reasons Your AC Isn’t Blowing Cold Air

1. Dirty or Clogged Air Filter

A dirty air filter restricts airflow, causing your AC to work harder and less efficiently. Regularly replacing or cleaning the filter can restore proper airflow and cooling performance.

2. Low or Leaking Refrigerant

Refrigerant is essential for cooling. Leaks can reduce cooling efficiency and damage the compressor. If you suspect a leak, it’s best to consult a professional for repair and recharging.

3. Frozen Evaporator Coil

A frozen coil can result from low refrigerant or poor airflow due to dirty filters. This prevents the AC from cooling properly. Turning off the unit to allow the coil to thaw and addressing the underlying issue is necessary.

4. Blocked or Dirty Condenser Coils

The condenser coils release heat from your home. If they’re dirty or blocked, heat transfer is impeded, reducing cooling efficiency. Cleaning the coils can improve performance. ​

5. Thermostat Issues

Incorrect settings or a malfunctioning thermostat can prevent your AC from cooling. Ensure it’s set to “cool” and the temperature is lower than the current room temperature. If problems persist, the thermostat may need replacement.

6. Leaky or Blocked Ductwork

Leaks or blockages in the ductwork can prevent cool air from reaching your rooms. Inspect ducts for visible damage or obstructions and consult a professional for repairs. ​

7. Tripped Circuit Breaker or Blown Fuse

Electrical issues can stop your AC from operating. Check your home’s circuit breaker or fuse box for any tripped breakers or blown fuses and reset or replace them as needed.

Preventive Measures

  • Regular Maintenance: Schedule annual AC tune-ups to keep your system running efficiently.​

  • Filter Replacement: Change or clean filters every 1-3 months, depending on usage and air quality.​

  • Thermostat Checks: Ensure your thermostat is functioning correctly and set appropriately.​

Need Professional Help?

If your AC isn’t blowing cold air and basic troubleshooting doesn’t resolve the issue, it’s time to call in the experts. At Lochard HVAC, Plumbing, and Service, we offer comprehensive AC repair and maintenance services to ensure your home stays comfortable year-round.​

Contact Lochard HVAC, Plumbing, and Service Today

Serving West Milton, New Bremen, Anna, Jackson Center, Degraff, and Quincy, we’re here to help with all your HVAC needs. Schedule an appointment online today to learn more.

FAQs

Why is my AC running but not cooling?

If your AC is running but not cooling, it could be due to a clogged air filter, low refrigerant levels, a malfunctioning thermostat, or dirty condenser coils. Each of these issues prevents the system from effectively removing heat from your home, resulting in warm airflow.

How do I fix my AC that isn’t blowing cold air?

Start with the basics: replace the air filter, check the thermostat settings, and inspect the outdoor unit for debris. If the problem continues, the issue could involve refrigerant levels, a frozen evaporator coil, or electrical faults—these typically require professional AC repair services.

How do I know if my AC is low on Freon?

Common signs of low Freon include weak airflow, warm air from vents, hissing or bubbling noises, ice buildup on the refrigerant lines, and higher-than-normal energy bills. An HVAC technician can confirm the levels and check for leaks.

How much does it cost to fill Freon in an AC unit?

The cost to refill Freon varies based on the type of refrigerant and how much your system needs. On average, it can range from $150 to $600 or more, especially if a leak must be repaired before the recharge.

How long does Freon last in an AC unit?

Freon should last the entire lifespan of your air conditioner—typically 10 to 15 years—unless there’s a leak. If your system frequently requires a recharge, there’s likely a leak that should be addressed.

If you’re still wondering “why is my AC not blowing cold air?” or you’re ready to schedule expert AC service, the team at Lochard HVAC, Plumbing, and Service is just a call away. From diagnostics and repairs to full AC replacement, we’re here to keep your home cool and comfortable.