What Causes An Air Conditioner To Freeze Up?

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Michael Foster
May 23, 2024
Heating & Cooling
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As temperatures soar, air conditioners are a must-have appliance to keep you cool and comfortable. But what happens when your AC unit suddenly freezes up? In this blog, we'll explore the top AC freeze-up sources, from low refrigerant levels to faulty thermostats and more.
While some AC issues could be resolved with a simple DIY fix, a frozen AC requires the expertise of a professional technician. Attempting to fix the problem yourself leads to further damage and costly repairs. That's why calling in a reliable AC repair service is important to assess the issue and provide the necessary solutions.
We'll also provide tips for preventing AC freeze-ups and keeping your unit running smoothly throughout the summer. So, let's dive in and explore what causes an air conditioner to freeze up and why you should always rely on a professional technician for air conditioning repairs.
Here are the top causes of the issues:
  • Low refrigerant levels: Refrigerants must be present in the correct amounts. If there isn't enough of it, evaporator coils will begin to ice up and render your AC unit useless.
  • Dirty air filter: A dirty or clogged filter can restrict airflow, causing the evaporator coils to become too cold and freeze up.
  • Faulty thermostat: If your thermostat is malfunctioning, it causes your AC unit to run longer than necessary, leading to the freezing of the coils.
  • Blocked or damaged air ducts: This issue can restrict airflow, causing the evaporator coils to become too cold and freeze up.
  • Dirty or damaged coils: Over time, the coils in your AC unit become dirty or damaged, reducing their ability to absorb heat and leading to freeze-ups.
  • Lack of maintenance: Regular maintenance is crucial to keep your AC unit running smoothly. Neglecting maintenance can lead to various issues, including freeze-ups.
Remember, attempting to fix a frozen AC causes further damage. Always call an expert technician for AC services to ensure proper diagnosis and repairs.

Tips To Keep Your Air Conditioner From Freezing Up

An AC freezing up could be a frustrating experience, but there are steps you can take to prevent it from happening. Here are some tips to keep your air conditioner from freezing up:
  1. Keep the air filter clean: A dirty filter can restrict airflow and cause the evaporator coil to freeze. Replace or clean your air filter regularly to ensure proper airflow.
  2. Keep the thermostat set to a reasonable temperature: Setting the thermostat too low causes the AC to run constantly and leads to freezing. Keep the thermostat at a reasonable temperature to prevent overworking the unit.
  3. Keep the evaporator coil clean: The coil is responsible for removing heat from the air. If it becomes dirty or clogged, it can't function properly and may freeze. Clean the evaporator coil regularly to ensure it is free from dirt and debris.
  4. Check for refrigerant leaks: Low refrigerant levels cause the evaporator coil to freeze. If you suspect a refrigerant leak, contact a professional to fix the leak and recharge the system.
  5. Keep the air vents open: Closing air vents causes restricted airflow and leads to freezing. Keep the air vents open to ensure proper airflow throughout your home.
Put these tips into practice to protect your AC from freezing up, so it runs efficiently all summer long.

Why should you always rely on a professional technician for air conditioning repairs?

There are some reasons why it's important to rely on a professional technician for air conditioning repair services:
  1. Safety: AC systems can be complex and potentially dangerous if improperly handled. Certified technicians have the necessary training and experience to handle repairs safely and minimize the risk of injury.
  2. Expertise: Professional technicians have specialized knowledge of AC systems and the latest repair techniques. Swiftly diagnosing and resolving issues can save time and resources in the long run.
  3. Proper Tools and Equipment: Licensed technicians have access to specialized tools and equipment needed for air conditioning repairs. This ensures that the job is done correctly and efficiently.
  4. Warranty Protection: Many AC manufacturers require repairs to be completed by certified experts to maintain the warranty. Using a professional technician for repairs ensures that your warranty remains valid.
  5. Avoid Further Damage: Attempting to fix an AC system without proper training can cause further damage to the unit. Professional technicians know how to fix the system without causing additional damage.
Overall, relying on a professional technician for air conditioning repairs can provide peace of mind and ensure your system runs safely and efficiently.

Who is the best expert to call for AC services?

The best expert to call for HVAC repair near me and AC maintenance services would be a licensed and experienced technician from a reputable company like Home Alliance. Home Alliance offers a range of AC services, including repairs and maintenance, and their technicians are skilled and knowledgeable in handling various AC issues. By calling Home Alliance, you can be assured that your AC will be repaired and maintained by experts who can ensure its efficient and effective operation. Book a service today for all your AC needs.