Why Your Air Conditioner is Freezing Up & What to Do?

Why Your Air Conditioner is Freezing Up & What to Do?

by | Jun 7, 2024 | affordable air conditioning service

Your air conditioner keeps you cool during hot summer days. But what happens if it starts to freeze up out of the blue? In this extreme heating climate, you may need air conditioning services to solve this frequent problem. Particularly if ice formation is the last thing you expected from your cooling system. You can avoid a great deal of trouble and expensive repairs by being aware of the causes of your AC’s freezing and taking appropriate action.

Let’s go through the most common causes, from low refrigerant levels and thermostat problems to poor airflow because of clogged filters. We’ll also provide solutions and precautions to help you take care of the issue right away and maintain the effectiveness of your AC.

In this blog, we’ll talk about preventive solutions, whether you’re trying to prevent a future freeze-up or fixing a minor problem. You can ensure your air conditioner continues to be a dependable source of cooling that saves you from warm air.

Common Causes of Air Conditioning Freezing Up

Freezing air conditioners is a frequent issue with a variety of causes. The good news is that a lot of these problems are simple to recognize and fix. These are the most frequent causes of AC freezing, along with some wise fixes.

Restricted Airflow

AC freezing is primarily caused by restricted airflow. Unclean air filters, closed or blocked vents, and clogged return air ducts can all be the cause of this. The evaporator coil freezes when airflow is impeded, bringing cold air back into the unit. Make sure vents are open and clear, clean or replace air filters regularly, and inspect return air ducts for obstructions to avoid this.

Low Refrigerant Levels

Freezing AC units can result from low refrigerant levels. This problem may be caused by undercharged systems or leaks in the refrigerant lines. Increased energy bills, ice buildup on the coils, and a struggling air conditioner are some of the symptoms. 

Therefore, hiring an air conditioner installation and repair expert like Cunningham AC is essential. They can check for leaks, fix them, and refill the refrigerant to the proper level, which is crucial.

Thermostat Issues

Your air conditioner may freeze as a result of a thermostat that isn’t working properly. Make sure the AC is set to “auto” rather than “on.” This will allow it to cycle on and off rather than run continuously. For improved temperature management, think about switching to a programmed type if the current thermostat is broken.

Fan Problem

Freezing may result from problems with airflow caused by malfunctioning blower fans or fan speed. Make sure the fan is operating at the right speed and in good working order. AC installation and repair professionals can fix or replace it if the fan isn’t working well.

Problems with Drainage

Ice formation can result from water backing up into the air conditioning unit due to clogged drain lines or overflowing drain pans. To guarantee adequate drainage, check and clean the drain pans and pipes regularly.

Step-By-Step Guide to Fixing Frozen Air Conditioning Unit

Don’t freak out if your air conditioner has frozen. Here are the steps to help you fix the problem or consult the professionals for air conditioning services in Florida.

Turn Off the AC and Open Windows

  • Turn off your air conditioner at the thermostat or the main power source as soon as you notice it freezing up. By doing this, additional harm to the device and any possible safety risks can be avoided.
  • To facilitate the flow of fresh air and accelerate the defrosting process, open the windows.

Find and Address the Cause

  • Make sure all of the supply vents are clear and open by checking them. Adjust any draperies, furniture, or other things obstructing the ventilation.
  • Check, clean, or swap out any soiled air filters. One typical source of reduced airflow that results in freezing is a dirty air filter. During periods of high usage, it is advised to clean or replace them every two weeks.
  • Look for any accumulated leaves, debris, or foliage on the outside unit that might be obstructing the airflow. Make the space clear to enhance proper air flow.
  • Consider contacting an HVAC specialist to check for refrigerant leaks or other underlying issues if the situation continues.

Defrost and Inspect

  • Run the fan to help accelerate the unit’s defrosting process after addressing any potential issues.
  • Verify that the blower fan is operating correctly and that its speed is set appropriately. Poor blower fan performance might reduce airflow and result in the air conditioner freezing.
  • While the system is operating, check the temperatures of the evaporator coils using an infrared (IR) thermometer. This will assist you in determining if any temperature readings are unusual.

Test and Prevent Future Issues

  • To make sure the air conditioner is operating correctly after defrosting, try running it once more.
  • Before summer and winter, make an appointment with an air conditioning system specialist to perform seasonal maintenance inspections. Frequent maintenance will help your HVAC system last longer and avoid freezing problems in the future.

When Should You Call a Professional?

Although homeowners can frequently perform basic maintenance and troubleshooting by themselves, knowing when to call in a professional is important. HVAC systems are complex. Certain problems require specific equipment and expertise. In general, the following situations call for consulting a professional: 

  1. Complex Repairs: If you encounter issues beyond your comfort level or those requiring specialized tools and training, it’s best to call a technician. This could include problems with the compressor, condenser, or evaporator coil. 
  1. Safety Hazards: Anytime you suspect a safety hazard, such as electrical issues, gas leaks, or carbon monoxide concerns, professional assistance is a must. Technicians are trained to handle these situations and make the necessary repairs to ensure your safety. 
  1. System Malfunctions: If your AC and heating system is not functioning properly and you cannot identify the cause, a professional diagnosis is warranted. They can troubleshoot the system, identify the root cause, and recommend appropriate repairs. 
  1. Routine Maintenance: While some maintenance tasks can be done at home, scheduling routine maintenance checks with a professional ensures your system is running optimally. Technicians can clean, adjust, and inspect the entire system, identifying potential issues before they become major problems. 
  1. Equipment Replacement: When it’s time to replace your HVAC equipment, a professional can advise on suitable options and ensure proper sizing and installation. 

By involving a professional like Cunningham AC Heat & Propane, you can rest assured that your system is in good hands. We ensure that any repairs or maintenance will be completed safely and effectively.

Conclusion

If you know why your air conditioner freezes up and take preventative action, you can stay cool on those hot summer days. These safety measures can help you take care of freezing problems and keep your air conditioner operating at peak efficiency. Make sure you plan routine maintenance and clean a dirty air filter. 

If you have more complicated issues, Cunningham AC Heat & Propane offers a professional air conditioning service. We ensure your system runs reliably and effectively all summer long. For the comfort of a cool breeze at home, get in touch with us!