A Troubleshooting Guide to Frozen AC Line


So your AC is running, but it’s not cooling your home. Frozen AC lines cause that to happen. It’s the last thing you want if you live in a region like Miami, where a constant supply of cool air is necessary. Luckily you can request quality AC repair in Miami by Direct Air.

Hire an experienced technician to diagnose your AC instead of trying frozen AC line quick fixes on your unit. A frozen AC line indicates a significant underlying problem. When the AC line is freezing, other problems with the AC system will appear and interfere with your plan to have cool air in your space. Keep reading to learn more about troubleshooting a frozen AC line.

Fixing a frozen AC line the DIY way 

You don’t have to run to an AC technician every time your AC acts up. Instead, you can wake your inner mechanic and try to fix some of the AC issues yourself. A frozen AC line is one of those things you can find a solution for with some knowledge about air conditioners. 

Try the tips described below to resolve Frozen AC line issues. Think of them as temporary fixes until you can find an experienced technician to fix the problem.

Switch to fan mode

Switching to a fan gives the line time to unfreeze. First, you must turn off the air conditioner and let it cool. Leave it off for about four hours. The warm air in your home will help defrost the AC line. One indication that this didn’t work is if the line freezes again once you switch on the system. It’s time to hire a technician when that happens.

Change dirty filters 

A clogged filter can cause a series of problems in your air conditioner. The work of a filter is to ensure that the air in your indoor air space is clean and without debris and particles. The garbage and impurities impede the airflow, resulting in a frozen AC line.

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Regular AC maintenance is essential to let you know when it’s time to clean the filter. For example, when the AC line is frozen, change a dirty filter and see if that changes anything. Changing it every three months is essential to evade problems like a frozen AC line.

Clear the pathway for the return/supply vent

The vents ensure there is air movement in your home. Check for obstacles on the air pathway of the vents. Avoid placing a couch, for instance, or a pot in front of the duct. 

Obstacles in front of the vents will restrict airflow and heat exchange. Remove obstacles blocking vents even in the rooms you don’t use to thaw the lien efficiently.

Repairs for a frozen AC line by a professional

You can only do so much to fix a frozen AC line. Know when to start, stop and call in trained experts since some actions might cause further damage to your unit. Also, letting an expert take care of some of the issues is a safety measure. 

Here are some of the things that a technician can help with to fix a frozen AC line. 

Repairing refrigerant leak

A refrigerant leak will likely cause ice to build up on the lines. Refrigerant leaks should never happen and only occur if your AC has defects. AC coolant leaks are pretty destructive to the environment and even your health. Waiting to have a refrigerant leak fixed could lead to refrigerant poisoning, which may have fatal results.

When you notice the coolant leak ensure you open the windows and doors and get out of your room. Listen for bubbling or hissing sounds around the frozen line to confirm the leak. An expert knows the best techniques to locate refrigerant leaks fast and the proper equipment and plans to apply to fix them. Retain one to ensure you have your AC running as soon as possible.

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Blower motor repair 

The blower motor runs the fan, which ensures that cold air doesn’t linger in the unit. When the blower motor isn’t working, you may have the highest fan setting mode, and the airflow around the unit still weakens.  

You’ll know the motor has a problem if it’s taking time to start; it produces a humming sound, doesn’t blow warm air outside, and is spinning slower than you would expect. With all the cool air retained in the unit and the exhaust unit removing warm air from the system, the AC  line will ultimately freeze.

Fixing a malfunctioning motor involves getting to the root of the problem, which is enough reason to let an expert take the lead. Often the best solution for a faulty motor is to replace it. Afterward, an expert will examine other AC components to eliminate any problems a malfunctioning motor might have caused.

Adjusting collapsed ductwork 

Collapsed or torn ductwork might be what’s causing the AC line to freeze. It interrupts how warm air flows to the evaporator coil. Warm air collects there to change the state. The decreased temperature in the AC line will cause the refrigerant to freeze.

You can look for confirmation signs that you have leaky ductwork by taking note of any spike in your electric bill. Uneven cooling of your space or dusty air are signs of tears in your ductwork. Invite an experienced technician to take care of collapsed air duct since some parts, like the joints, are pretty delicate. 

A  professional knows how to locate tears and the collapsed part of the ductwork. Besides adjusting collapsed ductwork, a technician will take advantage and check the ductwork for tears and especially in the joints.

Final Words 

You can DIY fix minor issues leading to issues without training. Sometimes a simple, quick fix will have a  frozen AC line up and running in no time. It’s vital to stay vigilant and know what you leave to the experts. For instance, only a trained professional should take the lead in fixing a leaky refrigerant. Ensure you keep up with maintenance to keep the AC coil from freezing.


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