Why Is My AC Not Cooling? A Guide for Dallas Homeowners

There’s nothing worse than coming home to a warm house when the Dallas heat is at its peak. If your AC is running but not cooling, it’s a frustrating and often alarming problem. Before you panic and search for “emergency AC repair Dallas,” it’s helpful to understand a few common culprits. At Dallas AC Repair, we believe in empowering our neighbors with knowledge. Here are the top reasons why your AC might be struggling and what you can do about it.

Top 5 Reasons Your AC Isn’t Cooling

1. Clogged Air Filter: The Most Common Culprit This is the first thing you should check. A dirty air filter restricts airflow, forcing your AC system to work harder. Over time, this can cause the indoor evaporator coil to freeze up. A frozen coil can’t absorb heat from the air, meaning your AC is just blowing air over a block of ice.
   

   • What to do: Turn off your AC unit at the thermostat and replace the old filter with a new one. Leave the unit off for a few hours to allow the coil to thaw before turning it back on.

2. Refrigerant Leak: A Serious Issue Refrigerant (often called Freon) is the chemical that cools the air in your AC system. If your unit is low on refrigerant, it’s likely due to a leak. This isn’t something that can be fixed with a simple “recharge.” A professional technician needs to find and repair the leak before adding more refrigerant.
   

   • What to do: If you hear a hissing sound or notice ice on the copper lines, turn the unit off and call a professional. A low refrigerant level can cause major damage to your compressor.

3. Dirty Condenser Coils: The Outdoor Culprit The large outdoor unit of your AC system has condenser coils that release the heat your system pulled from inside your home. If these coils are covered in dirt, grass, or pollen, they can’t dissipate heat effectively. This makes the system less efficient and can lead to a complete breakdown.
   

   • What to do: Make sure the area around your outdoor unit is clear of debris. You can gently rinse the coils with a garden hose, but avoid using a pressure washer. For a thorough cleaning, it’s best to hire a professional.

4. Fan Motor Failure: Both Inside and Out Your AC has two main fans: a blower fan inside that moves air through your ducts and a condenser fan outside that helps cool the refrigerant. If either of these motors fails, your system won’t be able to properly circulate air or cool itself, leading to a breakdown.
   

   • What to do: If you hear a loud humming noise but no air is blowing, the fan motor may be the issue. Turn off your system immediately and call a technician to prevent overheating.

5. Faulty Thermostat: A Simple Fix Sometimes, the problem isn’t with your AC unit at all. A broken or miscalibrated thermostat can be sending the wrong signals, telling your unit to turn on but not to cool, or to simply turn off at the wrong time.
   

   • What to do: Check the batteries in your thermostat. If they are fine, try resetting it. If the problem persists, a professional can check the wiring and connections.

When to Call a Professional AC Repair Company in Dallas

While some of these issues have simple fixes, many require the expertise of a licensed HVAC professional. If you’ve checked your filter and the problem remains, it’s time to call in the experts. Ignoring these signs can lead to more expensive repairs or the need for a full system replacement.

At Dallas AC Repair, we offer prompt and reliable service for all of your AC needs. We provide 24/7 emergency service for those urgent situations and offer a 100% satisfaction guarantee.

Get Your Dallas Home Cool Again!

Don’t let a faulty AC ruin your day. Contact Dallas AC Repair for a fast and accurate diagnosis. Our certified technicians will get your system running efficiently and your home cool and comfortable.

• Call us now at [927-203-6187]
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Service Area: We proudly serve Dallas and the surrounding communities, including Plano, Frisco, Irving, and Mesquit