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Why is My AC Unit Frozen Outside?

Why is My AC Unit Frozen Outside?

Why is My AC Unit Frozen Outside?

A frozen air conditioning compressor can be a major inconvenience during the summer months. Your AC unit is an integral part of your home’s air conditioning system and when it becomes frozen, it can leave your home feeling uncomfortable and uncomfortable.

In this article, we’ll discuss why your AC unit may freeze outside and what you should do to prevent and solve the issue.

Air Conditioners Overheating

The most common culprit for a frozen outside AC unit is the compressor overheating. AC compressors are highly sensitive to outdoor temperatures and when ambient temperatures are too high, the amount of heat required to keep the AC system running can cause the compressor to overheat. When this happens, the cooling coils and fins of the unit start to freeze until the unit is effectively shut down.

When your AC unit is frozen, it’s possible that the outside temperatures are getting cooler, but the AC unit is not able to cool the air enough to prevent freezing. If this is the case, the best course of action is to turn off the air conditioner and wait for the temperatures to go down.

Damage to the Heat Exchanger or Radiator

If the outdoor temperature is cooling off but the AC unit is still freezing up, the issue could be due to a damaged Heat Exchanger or Radiator. Over time, the Heat Exchanger or Radiator accumulates dirt and debris, which can cause it to clog and eventually stop working properly. When this happens, the heat exchanger may cease to operate, making it impossible for the unit to cool the air properly.

If this is the case with your AC unit, you will need to call a local, reliable appliance repair service to be sure that your heat exchanger or radiator is cleaned and working properly.

Defective Components

Faulty components, such as faulty valves and coils, can also be the culprit when it comes to a frozen outside AC unit. If your AC unit has been maintained properly, the chances of a faulty valve or coil are low. However, it’s always best to have your AC unit inspected by an experienced professional to ensure that all components remain in proper working order.

Preventing a Frozen Outside AC Unit

To prevent your AC unit from freezing outside, it’s important to keep the unit in a cool, shady area and ensure that it receives proper maintenance every year. Additionally, you should make sure that any loose dirt or debris is removed from the area surrounding the unit to allow air to circulate properly and protect the components from overheating.

By following these tips and having your AC unit inspected by a professional each year, you can reduce the chances of your AC unit freezing outside and ensure that your system runs at peak efficiency.


Having a frozen outside AC unit can be extremely inconvenient, but fortunately there are steps you can take to prevent and address the issue. Be sure to keep your AC unit in a cool, shady area and receive professional maintenance every year. Additionally, if your AC unit is showing signs of freezing up, be sure to take action quickly by turning off the unit and calling a local, reliable appliance repair service. Taking these steps can help keep your air conditioning system running smoothly during the summer months.

Why is My AC Unit Frozen Outside?
Why is My AC Unit Frozen Outside?
Why is My AC Unit Frozen Outside?

How to Prevent AC Unit Frozen Outside Installation Issues

The last thing you want is for your air conditioning unit to be frozen outside resulting from improper installation. Fortunately, there are a few steps you can take to ensure your unit is correctly installed and functioning optimally. Below are manufacturer recommendations, local appliance companies’ or HVAC technician’s recommendations regarding preventive action to avoid AC Unit Frozen Outside issues:

Check the Refrigerant Levels

One of the most important factors in avoiding frozen outsides is the refrigerant levels in your air conditioner. If the refrigerant levels are too low or too high, it can cause the outside unit to freeze up. Ask your HVAC technician to check the levels and top up if necessary.

Check the Filter

Dirt and dust can reduce coils’ ability to transfer heat, causing the air conditioner to freeze up. Make sure to check and clean the filter regularly.

Check the Drain Line

The drain line of your air conditioner should be checked and cleared of any obstructions to ensure proper drainage. Clogged lines can cause water to backup and freeze on the outside unit, creating a frozen outside unit.

Position Your Unit Properly

Choose the right location for your air conditioner, making sure to place it in an area that does not get direct sunlight. Also, ensure that the outside unit is at least six feet away from trees, shrubs, fences, or any other obstacles that could cause a blockage.

Avoid Overworking Your Unit

Avoid running your air conditioner too long or setting it at a particularly low temperature. This will put too much strain on the system, which can consequently cause the outside unit to freeze.

Regular Maintenance

It’s highly recommended to get regular tune-ups of your air conditioner to ensure optimal performance and to reduce the risk of it freezing. This can include checking that the compressor and evaporator are free of dust, inspecting that wiring connections are secure, replacing or cleaning the filter, checking its refrigerant levels, and checking the outside unit for any signs of corrosion.

By following these simple tips and taking preventative action, you can avoid AC Unit Frozen Outside issues, prolong the life of your air conditioner, and ensure that it works optimally all throughout the summer months. If you are unable to troubleshoot the issue yourself or are wary about attempting any repairs yourself, consider calling a local reliable air conditioning and heating contractor for assistance.

Advice on the Average Repair Cost for “AC Unit Frozen Outside” Issue

Having an air conditioning (AC) unit frozen outside can be alarming, yet a common problem that needs addressing. The average repair cost for this issue can range from as low as $100 for minimal repairs to as high as $3,000 for complex repairs. With the costs being higher in certain cities, like California, due to the required parts, materials, and labor.

When dealing with this issue, parts that are typically necessary for repair can include:

  • Refrigerant to add more to the system
  • Freon to reduce the temperatures around the unit
  • A new condenser coil
  • Additional fan motor
  • Thermostat

Each part can come at a price, with items such as a new condenser coil costing as much as $400, while an additional fan motor can cost around $245. As for supplies and materials, such as refrigerant, it can vary between $50 to $200 per pound.

With all the needed parts and materials, the cost to repair or install a new AC unit frozen outside can increase up to 20%, depending on the city and local labor costs. An itemized list can cost anywhere from $1,000 to $3,000, taking into account any required details, materials, and the cost of labor.

For expert advice and service on the average repair cost for “AC Unit Frozen Outside” issue, contact Local Reliable Air Conditioning & Heating at (866) 311-8590 for professional advice and affordable troubleshooting.

AC Unit Frozen Outside: The Benefits of Reliable Air Conditioning & Heating

Nobody wants their air conditioner to give up in the summertime and the hot California weather can make frozen AC units a common problem. Fortunately, for many California homes and businesses, Reliable Air Conditioning & Heating is here to help.

Reliable is a family-owned business and have been helping Californians to keep their cool since 1986. Their highly-trained technicians have an average of 5 years of experience on the job, and are experienced in dealing with frozen AC units. They offer same-day service and provide a 90-day warranty on their repairs, so you can trust their work.

Reliable is also licensed and insured, and offer fair and competitive pricing with their services. They can even come on short notice if you are in need of quick repairs or replacements.

Many customers have expressed their satisfaction with the service they’ve received from Reliable. They often comment on the great customer service they receive, and that they feel they can trust in their technicians when they arrive.

So, if you find yourself dealing with a frozen AC unit outside, don’t worry – Reliable Air Conditioning & Heating has you covered, no matter the time or day of the week. Get in touch for your AC Unit Frozen Outside service and rest assured that your home or business will be cool in no time.

FAQ – AC Unit Frozen Outside

Why is My AC Unit Frozen Outside?

The most common reason why your AC unit may be frozen outside is the lack of proper airflow. If the air isn’t circulating correctly in your unit, it can cause the evaporator coil to become too cold and freeze. Other potential causes may include a clogged air filter, low coolant, or thermostat settings that are set too low.

How Can I Prevent My AC Unit From Freezing?

There are several measures you can take to help avoid your AC unit from freezing. Make sure to regularly replace your air filter and check for any clogs or restrictors in the pipes. It is also important to ensure the refrigerant in your system is filled to the right levels and that the thermostat settings are correctly set.

What Should I Do If My AC Unit is Frozen Outside?

If you notice that your AC unit is frozen outside, it is important to turn it off. Do not attempt to thaw it manually as this could cause further damage. Instead, contact a local, reliable appliance repair professional to assess the issue and ensure it is working correctly.

It is recommended that you seek assistance from an experienced appliance repair technician to prevent any lasting damage to your system. Local Reliable Appliance Repair is available to provide you with the assistance and expertise you need. Call (866) 311-8590 to speak with a representative.

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