Why Is My AC Running But Not Cooling My Home in New Braunfels, TX?

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why is my AC running but not cooling

A dependable air conditioning system ensures you stay cool and comfy during those hot and muggy summer months in New Braunfels, TX. But have you ever wondered, “Why is my AC running but not cooling?” It can happen at any time and throw you off.  

At Apollo Air Heating & Cooling, we understand. As the leading AC service in New Braunfels, let’s dig into what might cause the issue and how to fix it. Keep reading to learn why your AC is not cooling and how to keep your home comfortable throughout the summer.   

why is my AC running but not cooling

Clogged Filters

Clogged filters restrict airflow, making the AC work overtime without effectively cooling your home. This strain reduces cooling efficiency since airflow is crucial for heat exchange. As a result, despite the unit’s continuous operation, your indoor environment won’t feel comfortably cool.   

Refrigerant Leaks

When refrigerant leaks from your AC unit, it can barely do its job properly. Think of it as losing coolant in your car; it just can’t cool things down as it should. So, the AC keeps running non-stop, using more energy without chilling your place like it should.  

Condenser Unit issues

Condenser unit problems hinder the air conditioner from cooling your New Braunfels home effectively. Dirty coils or refrigerant leaks reduce heat exchange efficiency. This limits the AC’s ability to remove heat effectively, even when it’s running.   

Thermostat Problems

Thermostat problems can make your AC run constantly without cooling your home. Incorrect settings or sensor issues, for example, prevent accurate temperature control. As a result, you’ll have an AC running but not working.  


In cases like this, thermostat replacement may be necessary to restore proper function. A faulty thermostat can miscommunicate with your HVAC system, leading to energy waste, inconsistent temperatures, and unnecessary wear on the unit. Replacing the thermostat ensures accurate temperature control and helps your AC operate as it should.

Electrical Issues in Your New Braunfels, TX Home

Electrical Issues in Your New Braunfels, TX

Electrical problems can stop the AC from cooling your home properly, even if it’s running. Issues like faulty wiring or a blown capacitor can disrupt how the compressor works, which means the AC can’t remove enough heat from inside your home to cool it down effectively.   

Frozen or Dirty Evaporator Coils

Frozen or dirty evaporator coils block air and heat exchange. Less air flowing means less heat absorbed, while dirt traps heat instead of transferring it. This stops the AC from cooling your home properly even though it’s running.  

Duct System Leaks

Wondering, “Why is my AC running but not cooling my home?” When your ducts leak, they send cool air in the wrong direction, reducing your system’s overall efficiency.   

Your AC ends up working overtime to cool the house, but because insufficient or no cold air reaches where it’s needed, your home stays warm despite the AC running continuously. 

A Non-Functioning Compressor

When your AC’s compressor stops working, the system can run continuously without cooling your home. The compressor primarily circulates refrigerant that absorbs heat indoors and releases it outdoors. Without this process, the air remains warm inside instead of cooling down.  

Broken Condenser Fan

With a broken condenser fan, heat gets stuck in the coils instead of breezing out as it should, impairing the cooling process. Your house will feel like an oven because the AC can’t dump the excess heat outdoors as it should.  

Dirty or Blocked Registers

When your registers get dirty or clogged, it leads to blocked airflow. That means your system has to work overtime to cool your home, but it just can’t keep up. Keep those registers clean to let the cool air flow freely and keep your home comfortable.  

Excess Heat

Excess heat, whether from the sun or nearby gadgets, overwhelms your AC. It runs constantly but struggles to cool your home effectively. The AC works harder but can’t keep up with the heat load, leaving your place warmer than desired.  

Routine system maintenance and shading your home may help your AC fight off the heat better, ensuring cooler indoor temperatures.   

Premium HVAC Solutions in New Braunfels, TX – Stay Comfortable with Apollo Air Heating & Cooling

Discover a new level of comfort with Apollo Air Heating & Cooling’s premium HVAC solutions. We don’t just fix systems; we create experiences. Our service-focused approach ensures satisfaction at every step.   

Enjoy peace of mind with our comprehensive system warranty and meticulous maintenance plans. Expect more with our exceptional service that goes beyond the ordinary. At Apollo Air Heating & Cooling, you always come first.   

If you have questions like, “Why is my AC running but not cooling?” or “Will an AC fan run if the compressor is bad?”, count on us for expert advice and quality service.  

Keep your home cozy year-round with our expert care. Call us at 210-847-9293 to schedule HVAC service in New Braunfels, TX, and feel the difference in your comfort!