3 Fast Steps for Fixing a Frozen Air Conditioner

Does the air flowing from your supply registers unexpectedly feel not cold enough? Inspect the indoor portion of your air conditioner. This component is located in your furnace or air handler, if you have a heat pump. If there’s water seeping onto the floor, there could be crystals on the evaporator coil. The AC coil in the unit may have frozen over. You’ll need to defrost it before it can cool your house again.

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

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

To begin—set the thermostat from “cool” to “off.” This halts chilly refrigerant from going to the outdoor compressor, which could damage it and cause a pricey repair.

After that, switch the fan from “auto” to “on.” This produces heated airflow over the frosty coils to help them thaw faster. Remember to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.

It might take less than an hour or most of the day for the ice to melt, depending on the extent of the ice. While you’re waiting, keep an eye on the condensate pan under the AC unit. If the drain line is blocked, it could create a mess as the ice melts, potentially creating water damage.

Step 2: Diagnose the Issue

Low airflow is a chief cause for an AC to become frozen. Here’s how to get to the bottom of the problem:

  • Inspect the filter. Inadequate airflow through a dusty filter could be the culprit. Inspect and put in a new filter each month or as soon as you observe a layer of dust.
  • Open any closed supply vents. Your home’s supply registers should remain open constantly. Shutting vents reduces airflow over the evaporator coil, which may result in it freezing.
  • Be on the lookout for covered return vents. These typically don’t come with moveable louvers, but furniture, rugs or curtains can still block them.
  • Insufficient refrigerant: While airflow restrictions are the most common suspect, your system might also have insufficient refrigerant. Depending on its age, it may use Freon® or Puron®. Not enough refrigerant necessitates professional help from a certified HVAC technician. H2: Step 3: Contact an HVAC Professional at Norrell Service Experts

If insufficient airflow doesn’t seem to be the trouble, then something else is causing your AC freeze. If this is what’s going on, just letting it melt won’t take care of the issue. The evaporator coil will probably continually freeze unless you fix the root symptom. Contact an HVAC tech to address issues with your air conditioner, which can include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run out. Low refrigerant indicates a leak somewhere. Only a tech can find the leak, repair it, and recharge the air conditioning to the correct amount.
  • Filthy evaporator coil: If grime accumulates on the coil, air can’t get to it, and it’s apt to freeze.
  • Broken blower: A broken motor or unbalanced fan might stop airflow over the evaporator coil.

If your AC freezes up, contact the NATE-certified techs at Norrell Service Experts to take care of the issue. We have lots of experience helping homeowners check their air conditioners, and we’re certain we can get things working again fast. Contact us at 205-267-0023 to get air conditioning repair in Birmingham 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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