3 Easy Steps to Fix a Frozen Air Conditioner

Does the air flowing from your supply registers unexpectedly feel warm? Inspect the indoor portion of your air conditioner. This part is situated in your furnace or air handler, if you use a heat pump. If there’s water dripping onto the floor, there may be frost on the evaporator coil. The AC coil inside the unit may have frozen over. You’ll need to melt it before it can cool your house again.

Here’s what to do. If you can’t get the coil back to normal, Rolf Griffin Service Experts is here to assist you with air conditioning repair in Fort Wayne upheld by a 100% satisfaction guarantee.*

Step 1: Set the Air Conditioning to Off and the Blower On

First things first—move the thermostat from “cool” to “off.” This prevents chilled refrigerant from flowing to the outdoor compressor, which could damage it and result in an expensive repair.

Next, adjust the fan from “auto” to “on.” This produces heated airflow over the frosty coils to make them thaw faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.

It might take under an hour or most of the day for the ice to defrost, depending on the amount of the accumulation. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is obstructed, it may cause a mess as the ice melts, potentially causing water damage.

Step 2: Pinpoint the Problem

Bad airflow is a main reason for an AC to frost over. Here’s how to get to the bottom of the situation:

  • Exmaine the filter. Low airflow through a dirty filter could be to blame. Check and put in a new filter monthly or once you see dust buildup.
  • Open any sealed supply vents. Your residence’s supply registers should remain open all the time. Closing vents decreases airflow over the evaporator coil, which might lead it to freeze.
  • Check for covered return vents. These typically don’t have shiftable louvers, but furniture, rugs or curtains can still cover them.
  • Not enough refrigerant: While airflow restrictions are the most frequent cause, your air conditioner could also have insufficient refrigerant. Depending on its age, it may have Freon® or Puron®. Low refrigerant requires skilled help from a certified HVAC tech. H2: Step 3: Contact an HVAC Specialist at Rolf Griffin Service Experts

If inadequate airflow doesn’t appear to be the problem, then something else is causing your AC freeze up. If this is what’s going on, simply thawing it out won’t repair the trouble. The evaporator coil will probably keep freezing unless you repair the main issue. Call an HVAC technician to address problems with your air conditioner, which can include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run low. Low refrigerant means there’s a leak somewhere. Only a technician can pinpoint the leak, mend it, and recharge the air conditioner to the correct amount.
  • Filthy evaporator coil: If dust accumulates on the coil, air can’t reach it, and it’s liable to freeze.
  • Broken blower: A faulty motor or unbalanced fan can prevent airflow over the evaporator coil.

The next time your AC freezes up, call on the NATE-certified technicians at Rolf Griffin Service Experts to repair the problem. We have lots of experience helping homeowners check their air conditioners, and we’re sure we can get things operating again fast. Contact us at 260-557-1275 to get air conditioning repair in Fort Wayne with us right away.


*Not applicable to the Advantage Program. See your signed Advantage Program agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.

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