3 Easy Steps for Repairing 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 piece is housed in your furnace or air handler, if you have a heat pump. If there’s water leaking onto the floor, there could be frost on the evaporator coil. The AC coil within the system may have frozen. You’ll need to melt it before it can cool your house again.

Here’s the steps you should take. If you can’t get the coil frost-free, Wesley Wood Service Experts is here to help with air conditioning repair in West Chester backed 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 halts cold refrigerant from flowing to the outdoor compressor, which could hurt it and lead to an expensive repair.

Next, switch the fan from “auto” to “on.” This produces warm airflow over the crystallized coils to force them to defrost faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It can take not more than an hour or the better part of a day for the ice to melt, depending on the amount of the buildup. While you’re waiting, watch the condensate pan under the AC unit. If the drain line is clogged, it could overflow as the ice melts, possibly resulting in water damage.

Step 2: Diagnose the Issue

Not enough airflow is a prime reason for an AC to frost over. Here’s how to get to the bottom of the issue:

  • Check the filter. Low airflow through a filthy filter could be the issue. Check and replace the filter monthly or as soon as you see dust buildup.
  • Open any shut supply vents. Your residence’s supply registers should stay open always. Closing vents limits airflow over the evaporator coil, which can lead it to freeze.
  • Be on the lookout for covered return vents. These typically don’t use adjustable louvers, but furniture, rugs or curtains can still obstruct them.
  • Insufficient refrigerant: While airflow restrictions are the most frequent suspect, your air conditioning may also not have enough refrigerant. Depending on how old it is, it may use Freon® or Puron®. Low refrigerant requires pro support from a certified HVAC specialist. H2: Step 3: Call an HVAC Tech at Wesley Wood Service Experts

If insufficient airflow doesn’t feel like the problem, then another issue is making your AC freeze. If this is what’s going on, simply letting it melt won’t take care of the trouble. The evaporator coil will probably keep freezing unless you repair the root cause. Contact an HVAC technician to address troubles with your air conditioner, which can include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run out. Not enough refrigerant signals a leak somewhere. Only a technician can pinpoint the leak, mend it, and recharge the system to the correct concentration.
  • Dirty evaporator coil: If dirt accumulates on the coil, air can’t reach it, and it’s apt to freeze.
  • Broken blower: A defective motor or unbalanced fan might prevent airflow over the evaporator coil.

When your AC freezes up, call on the NATE-certified technicians at Wesley Wood Service Experts to repair the problem. We have a lot of experience helping homeowners check their air conditioners, and we’re sure we can get things operating again fast. Contact us at 484-401-7577 to get air conditioning repair in West Chester 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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