Why Is My AC Frozen Over?

Why Is My AC Frozen Over?

If your AC unit has suddenly developed a habit of freezing over, you need to begin making plans to have it looked at by a technician. There is nothing normal about this problem and it will only continue to get worse. Below are a few of the main causes for frozen coils on your AC system.

Why Is My AC Frozen Over

The Problem with Ice On the Coils

If the house is heating up suddenly and upon investigating you find ice coating the coils, there is a problem happening that needs service. Many people misunderstand the layer of ice and think that somehow it should cool the home better. It basically renders the AC unit completely ineffective. The ice coating the surface of the coils keeps the heat exchange from happening that actually provides the cool air for your home.

Low Levels or Ineffective Refrigerant

The refrigerant within the coils is what cools the air that is directed at them. having levels that are too low to make a difference will create the perfect situation to build ice on the surface. You will need to have a technician find any possible leaks, repair them and refill the system.

Faulty Fan

When the fan is moving too slow, or not moving at all, the system will tend to freeze up. Airflow has to be steady and consistent or there will be problems. You will need to have this part replaced for proper function of the AC system.

Clogged Air Conditioning Filter

A dirty and clogged air filter can also be the cause of freezing of the coils. You are not getting the proper amount of fresh air into the system and it will probably mean that the coils are dirty. A coating of dirt and grime on the coils will not allow the heat transferral to happen as it should.

Rapid Cycling

An AC unit that turns on and shuts off too soon in rapid succession is subject to freezing up. This might indicate that you are trying to cool too large an area for the given unit. You may have to upgrade to a larger unit or add window units to assist in cooling.

Contact specialists like CC Air and Heat for ac repair Williamsburg VA right now!


Mary is a millennial who works as a part-time freelance writer. She's trying to realize more ways to live a sustainable lifestyle while learning Spanish on her vacant times.

This Post Has 21 Comments

  1. I think that having a well working air conditioner is a great thing to have. I find it amazing that people would not change the air conditioner’s filter. It seems that a lot of problems can be fixed by simple solutions.

  2. Prem Kumar

    You well said on AC Frozen. You mentioned good points.
    I am from CHS Buddy, We provide technicians for Home Mentaince Service and Repair in Delhi NCR. If you and loved once are enquiring for the same you just browse our website http://www.chsbuddy.in

  3. Afton Jackson

    I like that you mentioned that if you see ice on the coils we will need the hvac contractor’s help already. I agree as well that the coating will render the unit ineffective. We will need a guide on where to find an expert in air conditioning repair to help us out.

  4. There are many concerns in AC that causes this problem. Proper maintenance is advised to avoid this problems in AC units.

  5. Afton Jackson

    I stumbled upon here and the idea of having a fan that moves so slow irritated me. Not only will I get lesser airflow, but a fan that has proper function will definitely work better. I plan to call the local air conditioning repair contractor for help with this one.

  6. Afton Jackson

    I never knew that a clogged filter can cause the freezing of the coils. My wife and I will definitely try this. If it happens that it still freezes up, we will need to consult an HVAC contractor for our air conditioning problem.

  7. jake nems

    I was following your expert advocate and have already all started seeing a difference in website traffic.
    It hasn’t been long on the grounds that I started implementing some of you suggested ninja techniques and got great results on my site AC Maintenance Dubai

  8. Mike

    I appreciate your tip about getting your ducts and vents clean to ensure good air quality when it comes to your HVAC system.
    AC Installation Dubai

  9. ELTEC

    So informative. Thanks for all the work you put in!

  10. om hvac

    This is really informative blog. Air conditioning repair is very important for cooling our place good. Thank you for sharing this…

    1. Cold Factor

      Your HVAC systems should be checked by a professional once a year. So if you have a standard central AC or a furnace, each of these units should be maintained, each year.

  11. Hvac Duct

    Thanks for the informative post. I agree with the regular maintenance for both heating and air conditioning. Break downs in peak seasons can be a real hassle.

  12. Robert Allen

    To reduced this freezing I want to know after how many days should I have maintenance my HVAC?

  13. From last few days ago I noticed that my AC is not working properly .I don’t understood why this happening. After reading your article on internet I have learnt many things about why AC freezing. Then I hire a professional service to check my AC. After checking they told me my AC became freezing because of dirty air clogged. I am really thankful to you for sharing this excellent tips which is really helpful for maintained ac properly.

  14. ESCO

    While the temperature you set your thermostat to is certainly a matter of personal comfort and preference, it’s helpful to note that all a/c units have built-in optimum temperature ranges to ensure their longevity and maximum efficiently :) So it’s important to find out the most energy-efficient range for your a/c unit.

  15. Lucy David

    This is very informational. I was in search of heating and AC repair and found one.

  16. Alhamd Technical

    Really awesome information. When I read your blog, I learn more new things & also I would like to read about decor design. Thank you for sharing your excellent post. Keep it up.

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