3 Quick Steps to Repair a Frozen Air Conditioner

Does the air flowing from your supply registers unexpectedly appear hot? Check the indoor part of your air conditioner. This piece is housed within your furnace or air handler, if you rely on a heat pump. If there’s water leaking onto the floor, there could be ice on the evaporator coil. The AC coil in the system might have frozen. You’ll need to thaw it before it can cool your house again.

Here’s what to do. If you can’t get the coil back to normal, Comfort Masters Service Experts is here to support you with air conditioning repair in Wheeling that includes a a 100% satisfaction guarantee.*

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

First things first—switch the thermostat from “cool” to “off.” This stops chilly refrigerant from flowing to the outdoor compressor, which could damage it and result in a pricey repair.

Next, adjust the fan from “auto” to “on.” This produces warm airflow over the frosty coils to help them defrost faster. Remember to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.

It could take not more than an hour or the majority of the day for the ice to thaw, depending on the degree of the buildup. While you’re waiting, keep an eye on the condensate pan under the AC unit. If the drain line is blocked, it may cause a mess as the ice melts, likely resulting in water damage.

Step 2: Troubleshoot the Issue

Poor airflow is a prime reason for an AC to become frozen. Here’s how to figure out the problem:

  • Exmaine the filter. Poor airflow through a filthy filter could be the issue. Inspect and put in a new filter each month or immediately when you observe dust buildup.
  • Open any sealed supply vents. Your house’s supply registers should remain open all the time. Sealing vents reduces airflow over the evaporator coil, which can result in it freezing.
  • Be on the lookout for obstructed 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 cause, your air conditioner may also be low on refrigerant. Depending on when it was replaced, it may have Freon®. Low refrigerant calls for skilled help from a certified HVAC tech. H2: Step 3: Get in Touch with an HVAC Specialist at Comfort Masters Service Experts

If poor airflow doesn’t seem to be the issue, then another issue is causing your AC frost over. If this is the case, just letting it melt won’t take care of the problem. The evaporator coil will probably keep freezing unless you take care of the main issue. Contact an HVAC professional to address problems with your air conditioner, which might include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run low. Not enough refrigerant indicates a leak somewhere. Only a technician can find the leak, fix it, and recharge the system to the correct concentration.
  • Dirty evaporator coil: If grime collects on the coil, air can’t get to it, and it’s liable to freeze.
  • Malfunctioning blower: A bad motor or unbalanced fan might stop airflow over the evaporator coil.

When your AC freezes up, contact the ACE-certified professionals at Comfort Masters Service Experts to repair the problem. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re confident we can get things working again quickly. Contact us at 847-250-6729 to schedule air conditioning repair in Wheeling with us today.


*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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