How To Fix Pipe On Ac Is Frozen?

Posted by: Mas Broto
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How to fix pipe on ac is frozen?

Air Conditioner problems may appear for various reasons, and a frozen AC pipe is one of them. Today, we will talk about some of the most common air conditioner problems that homeowners may encounter. And, here’s how to prevent ac unit pipes from freezing and thaw them if the pipe on ac is frozen.

A frozen pipeline is an indication of a bigger air conditioner problems. When you do not handle it properly, it can lead to a significant AC repair.

Is it normal when an outside ac unit pipe is frozen? It is normal if you live in sub 50-degree weather, but it’s likely a problem if you live in a high-temperature average of 77 degrees.

Why my AC unit pipe is frozen?

The main reason why your AC pipes are freezing is mainly that your evaporator coils are becoming too cold. A properly functioning AC system removes the heat from your home and blows it through your air conditioner, where the evaporator coils cool the warm air, then send it back into the house. 

If the system encounters problems, the evaporator coil may absorb less heat and get too cold, resulting in a frozen refrigerant line and ice accumulation.

Other reasons why ac pipe frozen are:

  • Accumulation of dirt over the coils
  • Blocked AC vents
  • Clogged air filters
  • Blower fan failure
  • Collapsed air ducts
  • Low refrigerant levels

What to do when the AC pipe is frozen?

There are few things you can do to get the AC unit working again. However, here’s what to do if your AC pipe is frozen:

Turn Off Your Air Conditioner

If you notice your AC pipe is frozen, turning the AC system off and switch to fan mode. This action will give your air conditioner time to cool off while having warm air from your home circulating through the system. Set this setting around 1 hour, then you can restart your system.

Check the Air Filter

Clogged AC air filters can do a lot of harm to your heating and cooling system causes an ac pipe to be frozen. If you notice your air filter is dirty, you should replace it with a new one immediately.

Check the Supply Vent

Supply vents are the vents that distribute cool air for any room in your house. Some homeowners assume that closing unused supply vents will result in higher efficiency and lower energy bills. However, any closed supply vent can restrict the air flowing through your air conditioner and causing problems in the heat exchange process.

Check the Blower Motor

If the AC blower motor is not working correctly, it will prevent the fan from drawing enough warm air inside the unit. Unfortunately, this condition is also causing the AC pipe to accumulate ice.


If you suspect that your AC pipe is frozen, don’t panic! It might just be a minor issue you could troubleshoot yourself. But if the causes are from refrigerant leaks or blower motor, your unit needs to be inspected by a professional HVAC technician, especially if your AC unit pipe freezes often.

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Mas Broto

Have been in the heating and air conditioning (HVAC) industry for over 20 years. He is person that will grow and thrive to learn more about the HVAC industry throughout his career. Mas Broto is also a blogger, who's dedicated to bringing you the best knowledge to get ahead in the game of life.

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