When your AC unit freezes up, it can be a hassle and can be genuinely uncomfortable. Knowing the best way to handle a frozen air conditioning unit is essential to avoid further problems.

1. Turn Off Your Air Conditioning System

The first thing that you need to do is turn off the air conditioner. This is to prevent it from completely freezing. Then, turn on the blower to help with defrosting. You should use this time to inspect for underlying issues.

You should check the blower’s efficiency and the motor as this could also be the reason for freezing. Another reason could be lack of sufficient airflow to the evaporator coils. Also, if the blower is damaged, it would be hard to thaw the ice, and you’ll have to consult a technician to fix it.

2. Thaw the Ice

The next thing you need to do is get rid of the ice. You can let it melt by itself with the help of a blower.

3. Dry and Clean the Coils

Once the ice has melted, you should dry the coils completely. The blower will help dry the coils, and the system should run as expected when done. However, dirty coils could be the reason your AC freezes.

The evaporator coils are supposed to absorb heat from the air. When dirt or grime builds up on the coils, they can no longer do their job. This lets the refrigerant cool too much, causing freezing. The coils should be cleaned regularly.

4. Clean and Replace the Air Filters

The filters will collect a lot of dirt over time. This includes dust and pollen. These aren’t things that you want you to breathe as this could cause health issues for people with allergies and asthma. Dirt could also clog the air filter and reduce airflow.

To combat this, you should change the air filter every two to three months. Regular maintenance will allow the air filter to work efficiently, resulting in a well-functioning system.

5. Open All Dampers

This is another step you’ll want to take. Some dampers control the flow of air to the vents of a home. Opening them up would let the air circulate better, allowing more airflow. This will reduce the chances of freezing.

To do this, you should use a tool, like a key, to open the dampers up if they’re stuck. For room dampers, you should manually rotate them around once every couple of months.

6. Clean the Ducts and Remove Obstructions From the Vents

If your home has ducts, you should use a vacuum to clean out the dust and dirt that have been building up. You should do this regularly as the ducts are usually hidden behind walls.

You can also check if there are any obstructions in the vents that could be preventing proper airflow. You can use a tool, such as a flashlight, to check them.

7. Inspect and Unclog the Condensate Drain Line

Condensate drain lines are always full of condensed water. This can be dangerous because it could freeze and fall on the blower. Plus, you risk moisture gradually condensing and freezing on the coils.

To check for blocks in the drain line, you should first locate it. You can do this by looking for the main drain line of your AC. Follow that to the outlet outside, and you will see water dripping as the AC defrosts. If there is no water dripping, your system is blocked.

8. Call a Certified Technician to Check for a Refrigerant Leak

Low refrigerant levels could also be why your AC is freezing up. When the refrigerant is low, this causes the pressure to drop inside the evaporator coil. This also allows the moisture in the air to accumulate and freeze. If you have low refrigerant levels, you probably have a leak.

When you notice there are problems, contact one of our technicians to inspect your AC unit. Our technicians will diagnose the problem and come up with a solution. They’ll also be able to refill the refrigerant for you.

To avoid these issues, you need regular maintenance. Regular maintenance will prevent you from having major problems with your AC unit. We highly recommend that you schedule annual maintenance services with Putnam Mechanical. Our skilled technicians can install, repair, and maintain your AC unit.

When your air conditioning system freezes up, it can be a hassle and truly uncomfortable. In this ever-changing industry, proper maintenance is essential if you want to keep your AC running efficiently. Contact Putnam Mechanical today for more information. We offer heating, cooling, and electrical services in Mooresville, NC.

company icon