3 Easy Ways to Fix a Frozen Air Conditioner

Does the air emitting from your supply registers unexpectedly seem warm? Inspect the indoor portion of your air conditioner. This component 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 ice on the evaporator coil. The AC coil within the system may have frozen. You’ll need to defrost it before it can cool your residence again.

Here’s the steps you should take. If you can’t get the coil back to normal, Atmostemp Service Experts is here to assist you with air conditioning repair in Voorhees that includes a a 100% satisfaction guarantee.*

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

To begin—switch the thermostat from “cool” to “off.” This prevents cold refrigerant from flowing to the outdoor compressor, which could hurt it and result in a pricey repair.

Then, move the fan from “auto” to “on.” This creates heated airflow over the frosty coils to help them thaw faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t begin a cooling cycle.

It might take under an hour or most of the day for the ice to defrost, depending on the degree of the buildup. While you’re waiting, keep an eye on the condensate pan below the AC unit. If the drain line is clogged, it could overflow as the ice melts, likely resulting in water damage.

Step 2: Troubleshoot the Problem

Not enough airflow is a main cause for an AC to freeze up. Here’s how to figure out the issue:

  • Look at the filter. Poor airflow through a dusty filter could be the problem. Check and replace the filter each month or as soon as you see dust buildup.
  • Open any sealed supply vents. Your home’s supply registers should remain open constantly. Sealing vents limits airflow over the evaporator coil, which could result in it freezing.
  • Check for covered return vents. These often don’t use moveable louvers, but furniture, rugs or curtains can still cover them.
  • Insufficient refrigerant: While airflow restrictions are the most frequent culprit, your air conditioning could also be low on refrigerant. Depending on when it was replaced, it may use Freon® or Puron®. Low refrigerant requires pro attention from a certified HVAC specialist. H2: Step 3: Contact an HVAC Tech at Atmostemp Service Experts

If inadequate airflow doesn’t seem to be the trouble, then another problem is causing your AC frost over. If this is the case, merely letting it melt won’t take care of the problem. The evaporator coil will probably keep freezing unless you repair the underlying problem. Contact an HVAC pro to look for troubles with your air conditioner, which might include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run low. Low refrigerant is a sign of a leak somewhere. Only a tech can find the leak, fix it, and recharge the air conditioner to the correct amount.
  • Dirty evaporator coil: If dust accumulates on the coil, air can’t reach it, and it’s liable to freeze.
  • Broken blower: A bad motor or unbalanced fan could prevent airflow over the evaporator coil.

When your AC freezes up, call on the NATE-certified Experts at Atmostemp Service Experts to fix the issue. We have years of experience helping homeowners troubleshoot their air conditioners, and we’re certain we can get things working again quickly. Contact us at 856-310-4824 to get air conditioning repair in Voorhees 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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