Why Is My Air Conditioner Running but Not Cooling?

When warm air comes from the vents while your AC is running, it's more than an inconvenience—it’s a warning sign. This issue catches many homeowners off guard, especially during peak summer heat. The good news? It’s typically caused by a few fixable problems.

This problem usually points to an underlying issue that needs professional attention. Let’s examine the most common causes and explain how our expert air conditioning services can help.

1. Dirty or Clogged Air Filters

A dirty filter restricts airflow and can cause your system to overwork without effectively cooling your space. It’s one of the simplest issues to fix, but also one of the most common. Routine air conditioning maintenance includes checking and replacing filters to ensure optimal performance.

2. Low Refrigerant Levels

Your AC needs refrigerant to cool the air. If your system is low due to a leak, it may still run, but won’t cool effectively. Only a professional AC repair technician can locate the leak, seal it, and recharge the system safely. Low refrigerant can also damage the compressor if ignored for too long.

3. Dirty Condenser Coils

Your outdoor unit releases heat from your home. When the coils are covered in dirt, dust, or debris, the unit can’t release heat efficiently, so your system keeps running without dropping the indoor temperature.

4. Faulty Thermostat

Sometimes the problem isn’t with the system but your thermostat. If your thermostat misreads temperatures or doesn’t communicate correctly with your AC, it can cause your system to run without delivering cool air. A quick check from a technician can confirm if recalibration or replacement is needed.

5. An Aging System

If your system is 10–15 years old, it may simply be losing efficiency or nearing the end of its life. Older units often struggle to cool your home, especially during peak summer heat. In this case, a new air conditioning installation can offer better cooling performance and lower energy bills.

Let Controlled Comfort Keep You Cool

At Controlled Comfort, we don’t just fix AC problems—we solve them with care, precision, and the kind of service you’d expect from a family. Whether it’s a quick fix or a system overhaul, our expert air conditioning services cover everything from prompt AC repair to professional air conditioning installation and hassle-free air conditioning maintenance.

We’re proud to be Omaha’s trusted HVAC partner—rooted in honesty, fueled by expertise, and driven by your comfort. Speak with an HVAC expert today to schedule your service and get your cool air back quickly and professionally.

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