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AC Unit Freezing Up? Here’s What To Do

08/10/2023

Summertime comfort heavily relies on the efficiency of your air conditioning unit. But what happens when your AC unit freezes up, leaving you in a sticky situation? Don’t fret! In this step-by-step guide, we’ll unravel the reasons behind this chilly conundrum and provide you with practical solutions to get your AC unit back on track. Discover what to do when your AC unit freezes up and bid farewell to unexpected frostiness.

Understanding the Freeze-Up Phenomenon

Before diving into the solutions, let’s understand why your AC unit might freeze up in the first place. Contrary to logic, it’s not due to the cold. Rather, it’s often caused by restricted airflow. When the airflow is inadequate, the temperature of the evaporator coil drops excessively, causing condensation to freeze on its surface. This accumulation of ice obstructs proper functioning and must be dealt with promptly.

Step 1: Turn Off the AC

The moment you notice your AC unit is frozen, the first step is to turn off the system. Continuing to run the AC in this state can lead to further damage. By shutting it off, you allow the ice to thaw naturally.

Step 2: Check the Air Filter

A clogged or dirty air filter is a common culprit behind restricted airflow. Locate your air filter, which is typically positioned near the air handler. If it’s covered in dust and debris, replace it with a clean one. Regularly changing your air filter can prevent future freeze-ups.

Step 3: Examine the Air Vents and Ducts

Blocked air vents or ducts can severely hamper airflow, contributing to freeze-ups. Ensure that all vents are open and unobstructed by furniture or other objects. If you notice any damage or disconnection in the ductwork, consider seeking professional assistance.

Step 4: Inspect the Refrigerant Levels

Low refrigerant levels can cause the evaporator coil to become too cold, resulting in freezing. However, refrigerant issues should be handled by a certified air conditioning services technician, as they require specialized equipment and expertise. Jus

Step 5: Clear the Evaporator Coil

Once the ice has melted, you can carefully inspect the evaporator coil for any residual dirt or debris. Gently clean the coil using a soft brush or a vacuum cleaner with a brush attachment. Keep in mind that this task requires delicacy to avoid damaging the coil.

Step 6: Ensure Proper Airflow

Maintaining proper airflow is key to preventing future freeze-ups. Trim any vegetation around the outdoor unit and ensure there are no obstructions. Additionally, keep the area around the indoor air handler clutter-free.

Step 7: Regular Maintenance

Prevention is better than cure. Schedule routine maintenance with a professional HVAC technician to ensure your AC unit is in optimal condition. They can identify and address potential issues before they escalate, saving you from sudden freeze-ups and costly repairs.

Dealing with a frozen AC unit might seem daunting, but armed with the right knowledge, you can thaw out the issue and restore cool comfort to your home. By following these step-by-step solutions, you can prevent future freeze-ups and extend the lifespan of your air conditioning system. Remember, for more complex issues or professional maintenance, it’s wise to seek the expertise of certified HVAC professionals. Stay cool and comfortable all summer long!

For professional air conditioning services, get in touch with our experienced HVAC technicians.

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