3 Simple Steps for Repairing a Frozen Air Conditioner

Does the air flowing from your supply registers abruptly feel not cold enough? Inspect the indoor portion of your air conditioner. This part is housed in your furnace or air handler, if you use a heat pump. If there’s water seeping onto the floor, there could be frost on the evaporator coil. The AC coil inside the system might have frozen over. You’ll need to melt it before it can cool your home again.

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

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

To begin—set the thermostat from “cool” to “off.” This prevents chilly refrigerant from flowing to the outdoor compressor, which could hurt it and result in an expensive repair.

Next, adjust the fan from “auto” to “on.” This makes hot airflow over the frozen coils to make them defrost faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.

It can take under an hour or the better part of a day for the ice to defrost, depending on the level of the accumulation. While you’re waiting, keep an eye on the condensate pan below the AC unit. If the drain line is clogged, it can spill over as the ice melts, potentially causing water damage.

Step 2: Diagnose the Issue

Poor airflow is a leading cause for an AC to freeze up. Here’s how to get to the bottom of the issue:

  • Check the filter. Insufficient airflow through a dirty filter could be the culprit. Inspect and change the filter once a month or immediately when you notice a layer of dust.
  • Open any shut supply vents. Your residence’s supply registers should remain open all the time. Sealing vents limits airflow over the evaporator coil, which could result in it freezing.
  • Look for blocked return vents. These typically don’t come with moveable louvers, but furniture, rugs or curtains can still obstruct them.
  • Not enough refrigerant: While airflow restrictions are the most typical suspect, your air conditioning could also have insufficient refrigerant. Depending on its age, it may have Freon® or Puron®. Low refrigerant calls for skilled support from a certified HVAC technician. H2: Step 3: Get in Touch with an HVAC Professional at Coastal Service Experts

If inadequate airflow doesn’t feel like the issue, then something else is making your AC freeze up. If this is what’s going on, merely letting it melt won’t fix the problem. The evaporator coil will possibly keep freezing unless you repair the main issue. Contact an HVAC professional to look for problems with your air conditioner, which could include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t get used up. Low refrigerant means there’s a leak somewhere. Only a specialist can pinpoint the leak, mend it, and recharge the system to the proper amount.
  • Grimy evaporator coil: If dust collects on the coil, air can’t flow over it, and it’s liable to freeze.
  • Broken blower: A faulty motor or unbalanced fan could halt airflow over the evaporator coil.

When your AC freezes up, contact the NATE-certified Experts at Coastal Service Experts to repair the trouble. We have years of experience helping homeowners check their air conditioners, and we’re confident we can get things running again in no time. Contact us at 912-208-2399 to schedule air conditioning repair in Savannah 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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