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Why Is My AC Unit Not Cooling? Advice for Cape Coral, FL Homeowners

Why is your AC running but not cooling? In Cape Coral, FL, where summer temps often run above 90°F, a malfunctioning air conditioner is a serious concern.

So, what can you do about it?

Let’s take a look at common issues that might cause this problem, and how to fix them!

AC Running But Not Cooling: Dirty Air Filters

Dirty air filters are a common reason for an AC running but not cooling. When the filters get clogged with dust and debris, they restrict airflow. This makes it difficult for the AC to cool your home.

You might notice that your system runs longer than usual or that the air coming out of the vents isn’t as cold. Checking and replacing air filters regularly can prevent this issue.

Most filters should be changed every one to three months. Keeping the filters clean ensures better airflow and helps maintain your AC’s efficiency.

It also improves indoor air quality. If you have pets or live in a dusty area, you might need to replace the filters more often. 

Blocked Condenser Unit

Cooling system issues can also come from a blocked condenser unit. The condenser unit is typically located outside and it’s responsible for releasing the heat absorbed from inside your house.

When the condenser is blocked by dirt, leaves, or other debris, it can’t function properly. This blockage forces your AC to work harder, which reduces its efficiency and cooling ability.

HVAC troubleshooting for this should include regularly inspecting and cleaning the condenser unit. You can use a garden hose to gently wash away dirt and debris from the unit. 

Keeping the area around the condenser clear of plants and other obstructions also ensures proper airflow. 

Thermostat Issues

Thermostat problems can often cause your AC to run without cooling your home. If the thermostat is not set correctly or isn’t working properly, it can send the wrong signals to your AC unit.

First, check that the thermostat is set to “cool” and not “fan” or “heat.” Make sure the temperature setting is lower than the current room temperature. Sometimes the thermostat might need new batteries or a reset to function correctly.

The placement of the thermostat can also affect its performance. If it’s located in a spot that gets direct sunlight or near heat-producing appliances, it can give false readings.

Moving the thermostat to a more central location in your home can help it get a more accurate temperature reading. If you have an older thermostat, consider upgrading to a programmable or smart thermostat.

Low Refrigerant Levels

Low refrigerant levels can cause your AC to run without cooling your home properly. Refrigerant is important for the cooling process because it absorbs and releases heat.

If the refrigerant level is too low, your AC can’t effectively transfer heat, resulting in poor cooling performance. You might notice that your system runs longer than usual or blows warm air instead of cold.

Leaks in the refrigerant lines are often the cause of low refrigerant levels. If you suspect a leak, it’s best to call a professional technician to inspect and repair the system.

Handling refrigerant requires specific skills and equipment, so it’s not something you should try to fix on your own. 

Electrical Problems

Electrical problems can cause your AC to run without cooling your home. Issues like tripped circuit breakers or faulty wiring can prevent your AC from operating correctly.

If your AC suddenly stops cooling, check the breaker box first. A tripped breaker can easily be reset to restore power to your AC unit. If the breaker trips again, there might be a more serious electrical issue that needs attention.

Faulty wiring is another common problem. Wires can become loose, corroded, or damaged over time. This can lead to poor performance or complete failure of your AC system.

If you’re not experienced with electrical work, it’s best to call a professional technician. They can safely inspect and repair any wiring problems.

Air Duct Issues

Air duct issues can prevent your AC from cooling your home effectively. The air ducts distribute cool air throughout your home.

Leaks in the ducts can cause cooled air to escape, leading to uneven cooling and higher energy bills. You might notice some rooms are cooler than others, or that your AC runs longer than usual.

Blockages in the ducts can also restrict airflow, making it harder for your AC to cool your home. These blockages can be caused by dust, debris, or even pests. Regularly inspecting your air ducts for leaks or obstructions can help keep your system running smoothly.

Sealing any leaks with duct tape or mastic sealant can prevent air loss. Cleaning the ducts can remove blockages and improve airflow. Professional duct cleaning services can also help maintain your air ducts and ensure they are free from debris.

Frozen Evaporator Coil

A frozen evaporator coil can cause your AC to run without cooling your home effectively. The evaporator coil is responsible for absorbing heat from the air inside your house.

When the coil freezes, it can’t absorb heat properly, leading to poor cooling performance. Several factors can cause the evaporator coil to freeze, including restricted airflow and low refrigerant levels.

If your air filter is dirty or your ducts are blocked, airflow to the coil can be reduced, causing it to freeze. Low refrigerant levels can also lower the temperature of the coil, leading to freezing.

If you notice ice on the coil, turn off the AC and let it thaw completely before addressing the underlying cause. Regularly changing your air filters and ensuring that your ducts are clear can help prevent the coil from freezing.

If the problem persists, it’s best to call a professional technician to check for refrigerant leaks and other issues.

For AC Service in Cape Coral, FL, Contact Florida Cooling Solutions Today

Regular maintenance and timely repairs can keep your AC running smoothly. If your AC is running but not cooling, identify the issue and take action with air conditioning repair.

At Florida Cooling Solutions, we’re the most trusted service contractors in Cape Coral. For more than 10 years, we’ve performed installations, repairs, and maintenance on HVAC systems throughout the area.

Get in touch today to find out how we can help you!