Why Is My AC Running Constantly but Not Cooling Well?

Nothing is more frustrating during a hot summer than an air conditioner that won’t cool your home properly. If your AC is running constantly but not cooling well, you may be facing an issue that affects both comfort and energy bills.

Understanding the reasons behind this problem can help you fix it quickly and prevent further damage. Here’s what you need to know about why your AC may be running non-stop without effectively cooling your home.

Common Causes of Poor AC Cooling

Several factors can prevent your AC from cooling efficiently, even if it’s running continuously. Let’s look at the most common reasons.

1. Dirty Air Filters

Clogged or dirty air filters restrict airflow, making it harder for your AC to circulate cool air. When airflow is limited, your system has to work harder and may run constantly while still failing to reach your desired temperature.

2. Low Refrigerant Levels

Refrigerant is the substance that cools the air in your AC. If your system is low on refrigerant due to a leak or insufficient charge, it can’t cool properly. The system will try to compensate by running longer, but the air will still feel warm.

3. Dirty or Blocked Coils

Evaporator and condenser coils transfer heat in your system. When these coils are dirty or blocked, heat exchange is less efficient, causing the AC to run continuously without cooling effectively.

4. Thermostat Issues

A malfunctioning thermostat or incorrect settings can confuse your system. If the thermostat isn’t reading the temperature accurately, the AC may keep running even when the home has reached the set temperature.

5. Improper AC Size

An AC that is too small for your home may struggle to keep up with the cooling demand. Even if it runs all day, it won’t be able to lower the temperature efficiently. Conversely, an oversized unit can cycle too quickly without properly dehumidifying your home.

6. Blocked or Leaky Ductwork

Air ducts that are blocked, disconnected, or leaking cool air into unconditioned spaces can reduce airflow to your living areas. The system will keep running, trying to reach the thermostat setting, but rooms may still feel warm.

7. Mechanical Problems

Issues like a failing compressor, worn-out fan motor, or faulty expansion valve can prevent your AC from cooling effectively. These problems require a professional diagnosis and repair.

How to Address the Problem

While some minor issues can be handled by homeowners, most AC problems require professional attention. Here are some steps you can take:

• Check and replace air filters regularly to ensure proper airflow.

• Inspect vents and ductwork for blockages or leaks.

• Confirm thermostat settings and replace batteries if needed.

  
  

For issues like low refrigerant, dirty coils, or mechanical failures, it’s best to contact a licensed HVAC professional. Attempting to fix refrigerant leaks or internal components on your own can be dangerous and may void warranties.

Why Professional Maintenance Matters

Regular AC maintenance helps prevent problems before they happen. During a professional tune-up, technicians will:

• Inspect and clean coils

• Check refrigerant levels and recharge if necessary

• Examine the thermostat and electrical connections

• Test system performance for efficiency and safety

  
  

Routine maintenance not only keeps your system running efficiently but also extends its lifespan and prevents costly emergency repairs.

At Van Bremen’s Heat & Air, our experienced technicians provide comprehensive AC inspections and maintenance to ensure your system runs smoothly all summer. We diagnose issues quickly and recommend the best solutions to restore comfort in your home.

Call Today for AC Service

If your AC is running constantly but not cooling well, don’t wait for the problem to get worse. Call (814) 483-1735 today or fill out our online form to schedule a professional AC inspection and repair. Our team will make sure your system is running efficiently so your home stays cool and comfortable.