3 Fast Steps to Repair a Frozen Air Conditioner

Does the air flowing from your supply registers suddenly seem not cold enough? Inspect the indoor component of your air conditioner. This part is situated within your furnace or air handler, if you rely on a heat pump. If there’s water dripping onto the floor, there may be ice on the evaporator coil. The AC coil in the equipment could have frosted over. You’ll need to defrost it before it can cool your house again.

Here’s the things you should do. If you can’t get the coil defrosted, Stevenson Service Experts is here to help with air conditioning repair in Columbus backed by a 100% satisfaction guarantee.*

Step 1: Set the Air Conditioning to Off and the Blower On

To get started—switch the thermostat from “cool” to “off.” This stops chilly refrigerant from moving to the outdoor compressor, which could harm it and lead to a costly repair.

After that, move the fan from “auto” to “on.” This makes heated airflow over the frosty coils to make them thaw faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t begin a cooling cycle.

It might take not more than an hour or most of the day for the ice to thaw, depending on the level of the buildup. While you’re waiting, keep an eye on the condensate pan under the AC unit. If the drain line is obstructed, it might spill over as the ice melts, potentially creating water damage.

Step 2: Diagnose the Issue

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

  • Inspect the filter. Inadequate airflow through a dirty filter could be the culprit. Look at and put in a new filter each month or once you notice a layer of dust.
  • Open any sealed supply vents. Your residence’s supply registers should remain open all the time. Sealing vents reduces airflow over the evaporator coil, which could lead it to freeze.
  • Check for obstructed return vents. These typically don’t use shiftable louvers, but furniture, rugs or curtains can still obstruct them.
  • Not enough refrigerant: While airflow restrictions are the most typical cause, your air conditioner may also not have enough refrigerant. Depending on when it was installed, it may rely on Freon®. Not enough refrigerant necessitates pro help from a certified HVAC tech. H2: Step 3: Get in Touch with an HVAC Technician at Stevenson Service Experts

If insufficient airflow doesn’t appear to be the issue, then another problem is leading your AC freeze up. If this is what’s going on, just thawing it out won’t fix the issue. The evaporator coil is likely to freeze again unless you fix the root problem. Get in touch with an HVAC specialist to check for problems with your air conditioner, which may include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t get used up. Low refrigerant is a sign of a leak somewhere. Only a specialist can pinpoint the leak, repair it, and recharge the air conditioning to the proper level.
  • Dirty evaporator coil: If dust accumulates on the coil, air can’t flow over it, and it’s likely to freeze.
  • Broken blower: A defective motor or unbalanced fan might prevent airflow over the evaporator coil.

The next time your AC freezes up, call on the ACE-certified pros at Stevenson Service Experts to take care of the problem. We have a lot of experience helping homeowners diagnose their air conditioners, and we’re sure we can get things running again in no time. Contact us at 614-334-3192 to schedule air conditioning repair in Columbus 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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