3 Quick Ways to Restore a Frozen Air Conditioner

Does the air emitting from your supply registers abruptly appear hot? Look at the indoor portion of your air conditioner. This component is situated inside your furnace or air handler, if you have a heat pump. If there’s water dripping onto the floor, there might be frost on the evaporator coil. The AC coil in the system could have frosted over. You’ll need to thaw it before it can cool your residence again.

Here’s the steps you should take. If you can’t get the coil frost-free, Pardee Service Experts is here to help with air conditioning repair in Charleston upheld by a 100% satisfaction guarantee.*

Step 1: Switch the Air Conditioning Off and the Blower On

To begin—move the thermostat from “cool” to “off.” This halts chilled refrigerant from going to the outdoor compressor, which could harm it and result in an expensive repair.

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

It may take not more than an hour or the better part of a day for the ice to defrost, depending on the extent of the accumulation. While you’re waiting, check the condensate pan under the AC unit. If the drain line is blocked, it might spill over as the ice melts, likely causing water damage.

Step 2: Diagnose the Issue

Low airflow is a chief reason for an AC to freeze up. Here’s how to get to the bottom of the issue:

  • Inspect the filter. Poor airflow through a filthy filter could be the problem. Check and change the filter once a month or once you notice dust accumulation.
  • Open any sealed supply vents. Your home’s supply registers should be open all the time. Closing vents decreases airflow over the evaporator coil, which might cause it to freeze.
  • Be on the lookout for obstructed return vents. These often don’t have moveable louvers, but furniture, rugs or curtains can still block them.
  • Low refrigerant: While airflow restrictions are the most common culprit, your air conditioning may also have insufficient refrigerant. Depending on how old it is, it may rely on Freon® or Puron®. Not enough refrigerant calls for pro assistance from a certified HVAC specialist. H2: Step 3: Contact an HVAC Expert at Pardee Service Experts

If low airflow doesn’t appear to be the trouble, then another issue is leading your AC freeze. If this is what’s happening, just defrosting it won’t take care of the trouble. The evaporator coil is likely to freeze again unless you fix the main problem. Contact an HVAC specialist to address troubles with your air conditioner, which could include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run low. Not enough refrigerant indicates a leak somewhere. Only a tech can pinpoint the leak, fix it, and recharge the air conditioning to the proper level.
  • Grimy evaporator coil: If dust builds up on the coil, air can’t flow over it, and it’s apt to freeze.
  • Malfunctioning blower: A broken motor or unbalanced fan may stop airflow over the evaporator coil.

The next time your AC freezes up, call on the NATE-certified technicians at Pardee Service Experts to take care of the situation. We have years of experience helping homeowners check their air conditioners, and we’re sure we can get things working again fast. Contact us at 843-410-6103 to schedule air conditioning repair in Charleston with us now.


*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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