Why Is My AC Running But Not Cooling?

Why Is My AC Running But Not Cooling?


If your air conditioner is running but your home still feels warm and muggy, you’re not alone. This is one of the most common complaints we hear from homeowners across Alabama, especially during our hot, humid summers. While there are a number of possible reasons, most can be resolved quickly with the right help.  At One Source Heating, Cooling, Plumbing & Electrical, we respond to every AC repair air conditioning problem by dispatching NATE-Certified technicians to your home or office.

1. Dirty Air Filter

A clogged filter restricts airflow and makes it harder for your system to cool the home. In Alabama’s pollen-heavy spring and dusty summer conditions, filters can get dirty fast. If it’s been more than a month since you checked it, start there.

2. Low Refrigerant

If your AC is blowing warm air, low refrigerant could be the culprit. This isn’t something that gets “used up” it usually means there’s a leak somewhere in the system. A licensed technician can locate the source and recharge your system properly.  EPA Guide to Refrigerant Use and Safety

3. Frozen Evaporator Coil

It sounds strange, but a frozen coil can prevent your AC from cooling effectively. This often happens when airflow is restricted or refrigerant levels are low. If you notice ice forming on your unit, shut it down and call for service before the problem gets worse.

4. Thermostat Issues

Sometimes, the issue isn’t your AC at all it’s the thermostat. Make sure it’s set to “cool” and that the temperature is set lower than the room temperature. Also, check the batteries or consider upgrading to a smart thermostat for more reliable control.

ENERGY STAR Smart Thermostat Tips

 

5. Dirty or Blocked Condenser Unit

The outdoor part of your AC system plays a big role in heat exchange. If it’s covered in dirt, leaves, or grass clippings, it can’t work efficiently. Make sure the unit is clear of debris and has space to breathe.

 

Don’t Wait—Schedule an AC Checkup Today

If your air conditioner isn’t cooling like it should, One Source HVAC Service is here to help. Our team serves homeowners throughout Alabama with fast, reliable repair and maintenance services. Ignoring early signs of trouble can lead to bigger problems—and higher repair bills down the road.

Call us today to schedule your AC service and stay cool all summer long.

Whether you require installation, repair, or maintenance, our technicians will assist you with top-quality service at any time of the day or night. Take comfort in knowing your indoor air quality is the best it can be with MOE heating & cooling services Ontario's solution for heating, air conditioning, and ventilation that’s cooler than the rest.
Contact us to schedule a visit. Our qualified team of technicians, are always ready to help you and guide you for heating and cooling issues. Weather you want to replace an old furnace or install a brand new air conditioner, we are here to help you. Our main office is at Kitchener but we can service most of Ontario's cities


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