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Why Is Ice Forming on My AC?

ice-on-mini-split

Ice forming on your air conditioner can be a sign of several issues. Understanding the causes and solutions can help you address the problem effectively and prevent further damage to your system. Here are some common reasons for ice formation on an AC system. Unfortunately, this usually means you’ll need AC repair in Waukee. Let’s go over what could be causing this issue and the signs.

Restricted Airflow

  • Clogged Air Filter: A dirty air filter can significantly restrict airflow, causing the evaporator coil to freeze. It’s important to check and replace your air filter regularly, typically every 1-3 months, depending on usage and the type of filter.
  • Blocked Vents: Furniture, curtains, or other objects blocking vents can lead to poor airflow throughout your home. Make sure all vents are clear and unobstructed to allow proper air circulation.
  • Closed Ducts: Ducts that are closed or partially closed can restrict airflow, leading to ice formation. 

Low Refrigerant Levels

  • Leaks: When refrigerant is low, the pressure in the system drops, causing the evaporator coil to freeze. It’s essential to have a professional HVAC technician check for leaks, repair them, and refill the refrigerant to the appropriate level. 

Dirty Evaporator Coil

  • Dust and Dirt: Regularly cleaning the evaporator coil can help maintain optimal performance. This is something we do during a routine maintenance visit.

Thermostat Issues

  • Incorrect Settings: A thermostat set too low can cause the system to run excessively, leading to freezing. Ensure your thermostat is set to a reasonable temperature, typically between 72-78 degrees Fahrenheit.
  • Malfunction: A faulty thermostat can lead to improper cooling cycles. If your thermostat is not functioning correctly, consider replacing it or having it calibrated by a professional.

Fan Problems

  • Faulty Fan: If the fan isn’t working properly, it can’t circulate air over the evaporator coil, causing it to freeze. 
  • Motor Issues: Problems with the fan motor can also lead to insufficient airflow. If the motor is malfunctioning, it may need to be repaired or replaced by a professional.

Drainage Problems

  • Blocked Drain Line: If the condensate drain line is blocked, water can back up and freeze around the coil. 
  • Broken Pump: A broken condensate pump can lead to water buildup and freezing. If the pump is not working, it may need to be repaired or replaced.

Always seek out a reliable service provider for your important AC repair needs.

  • Refrigerant: Proper refrigerant levels are crucial for the efficient operation of your AC system. 
  • Coils: Clean coils enhance the heat absorption capacity of the system.
  • Fan and Motor: Properly functioning fans are essential for maintaining airflow over the evaporator coil.
  • Drain Lines: A clear drain line prevents water buildup and potential freezing.

If you’re experiencing issues with your AC freezing over, contact us for a quick repair!

At Dalton Plumbing, Heating, Cooling, Electric and Fireplaces, Inc., your comfort is our promise! To set up an appointment in the Des Moines area, give us a call at the number above, email customerservice@daltonphc.com or schedule an appointment online. 

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