8 possible reasons behind AC not cooling properly

Prepare AC for the Summer Heat

Having an air conditioner that doesn't cool properly can be frustrating. Whether you're dealing with a sudden breakdown or a gradual decrease in efficiency, understanding the common reasons behind these issues can help you identify when it's time to call for air conditioning repair. Here are eight possible causes:

1. Dirty Air Filters

One of the most common culprits for an AC not cooling efficiently is dirty air filters. Clogged filters restrict airflow, diminishing the system's efficiency and cooling capacity.

2. Low Refrigerant Levels

Refrigerant is essential for cooling your home. Low levels, often due to leaks, can significantly reduce your air conditioner's ability to cool. This issue requires immediate air conditioning repair to prevent further damage.

3. Faulty Thermostat

A malfunctioning thermostat can lead to significant cooling problems by not accurately reading or setting the temperature, which may necessitate professional repair or replacement.

4. Dirty Coils

Over time, the evaporator and condenser coils can become coated with dirt and debris, hindering their ability to absorb and release heat. Cleaning these coils is often part of routine air conditioning repair services.

5. Blocked Condenser Unit

The outdoor condenser unit must be clear of debris and foliage to function efficiently. If it's blocked, it won't be able to effectively release heat, leading to poor cooling performance.

6. Leaking Ducts

Cool air escaping through leaks in your ductwork can cause your system to work harder and less efficiently. Sealing these leaks is a common focus of air conditioning repair.

7. Improperly Sized AC Unit

Both oversized and undersized AC units can lead to efficiency issues and frequent repairs. Ensuring your unit is appropriately sized for your space is crucial.

8. Lack of Maintenance

Regular maintenance is key to preventing many common issues that require air conditioning repair. Routine check-ups can help ensure that minor problems are addressed before they turn into major repairs.

A stitch in time saves nine—regular AC maintenance prevents costly repairs.

- Anonymous

Air Conditioning Repair Services at Northway's

At Northway's, we understand the importance of a properly functioning air conditioner. We are dedicated to providing top-notch air conditioning repair services to ensure your system is running smoothly. Our offerings include:

  • Routine Maintenance: Regular checks to optimize your system's performance and prevent unexpected failures.
  • Repair Services: Expert repairs for all types of AC issues, from minor adjustments to major overhauls.
  • Installation Services: Professional installation of new units, tailored to your specific cooling needs.
  • Emergency Services: Around-the-clock repair services to ensure you're never left in the heat.


If your air conditioner isn’t cooling properly, it's important to seek professional air conditioning repair services quickly to maintain comfort and efficiency. Northway's is here to help with any AC challenges you might encounter, ensuring that your system operates effectively throughout the year.

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