3 Fast Ways to Fix a Frozen Air Conditioner

Does the air coming from your supply registers unexpectedly seem not cold enough? Inspect the indoor portion of your air conditioner. This component is situated within your furnace or air handler, if you rely on a heat pump. If there’s water seeping onto the floor, there might be ice on the evaporator coil. The AC coil inside the equipment could have frozen. You’ll need to melt it before it can cool your home again.

Here’s the steps you should take. If you can’t get the coil defrosted, Donelson Air Service Experts is here to support you with air conditioning repair in Nashville that includes a a 100% satisfaction guarantee.*

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

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

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

It may take under an hour or the better part of a day for the ice to defrost, depending on the extent of the accumulation. While you’re waiting, check the condensate pan below the AC unit. If the drain line is clogged, it could cause a mess as the ice melts, likely resulting in water damage.

Step 2: Diagnose the Issue

Poor airflow is a prime cause for an AC to freeze up. Here’s how to troubleshoot the issue:

  • Look at the filter. Insufficient airflow through a clogged filter could be the culprit. Check and change the filter once a month or as soon as you notice a layer of dust.
  • Open any shut supply vents. Your residence’s supply registers should remain open constantly. Shutting vents reduces airflow over the evaporator coil, which can result in it freezing.
  • Check for obstructed return vents. These usually don’t use adjustable louvers, but furniture, rugs or curtains can still block them.
  • Low refrigerant: While airflow restrictions are the most frequent culprit, your air conditioner may also have insufficient refrigerant. Depending on how old it is, it may use Freon® or Puron®. Insufficient refrigerant calls for pro assistance from a certified HVAC technician. H2: Step 3: Get in Touch with an HVAC Expert at Donelson Air Service Experts

If low airflow doesn’t appear to be the issue, then another problem is causing your AC frost over. If this is what’s occurring, just thawing it out won’t repair the issue. The evaporator coil will probably keep freezing unless you fix the root issue. Contact an HVAC tech to look for troubles with your air conditioner, which can include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run low. Insufficient refrigerant means there’s a leak somewhere. Only a pro can find the leak, fix it, and recharge the system to the appropriate concentration.
  • Grimy evaporator coil: If grime accumulates on the coil, air can’t flow over it, and it’s likely to freeze.
  • Broken blower: A faulty motor or unbalanced fan could stop airflow over the evaporator coil.

If your AC freezes up, call on the NATE-certified specialists at Donelson Air Service Experts to take care of the issue. We have a lot of experience helping homeowners check their air conditioners, and we’re certain we can get things running again fast. Contact us at 615-953-9885 to get air conditioning repair in Nashville 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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