3 Easy Ways to Restore a Frozen Air Conditioner

Does the air emitting from your supply registers suddenly seem hot? Look at the indoor component of your air conditioner. This piece is housed in your furnace or air handler, if you use a heat pump. If there’s water dripping 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 the things you should do. If you can’t get the coil frost-free, BW/Cook Service Experts is here to help with air conditioning repair in Elkhart backed by a 100% satisfaction guarantee.*

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

First things first—move the thermostat from “cool” to “off.” This halts chilled refrigerant from going to the outdoor compressor, which could damage it and result in a pricey repair.

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

It may take less than an hour or the better part of a day for the ice to thaw, depending on the extent of the accumulation. While you’re waiting, keep an eye on the condensate pan underneath the AC unit. If the drain line is obstructed, it can cause a mess as the ice melts, likely resulting in water damage.

Step 2: Troubleshoot the Issue

Not enough airflow is a main explanation for an AC to frost over. Here’s how to get to the bottom of the issue:

  • Check the filter. Inadequate airflow through a clogged filter could be the problem. Inspect and replace the filter once a month or once you notice a layer of dust.
  • Open any sealed supply vents. Your home’s supply registers should stay open always. Sealing vents limits airflow over the evaporator coil, which may cause it to freeze.
  • Be on the lookout for blocked return vents. These usually don’t use moveable louvers, but furniture, rugs or curtains can still obstruct them.
  • Not enough refrigerant: While airflow restrictions are the most common culprit, your system might also have insufficient refrigerant. Depending on when it was installed, it may use Freon® or Puron®. Low refrigerant requires skilled support from a certified HVAC specialist. H2: Step 3: Call an HVAC Expert at BW/Cook Service Experts

If low airflow doesn’t seem to be the issue, then another problem is leading your AC frost over. If this is what’s going on, just letting it melt won’t take care of the problem. The evaporator coil is likely to keep freezing unless you repair the main symptom. Call an HVAC tech to check for troubles with your air conditioner, which might include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run out. Not enough refrigerant indicates a leak somewhere. Only a professional can pinpoint the leak, fix it, and recharge the system to the correct amount.
  • Filthy evaporator coil: If dust collects on the coil, air can’t get to it, and it’s apt to freeze.
  • Malfunctioning blower: A broken motor or unbalanced fan could stop airflow over the evaporator coil.

If your AC freezes up, contact the NATE-certified technicians at BW/Cook Service Experts to fix the situation. We have a lot of experience helping homeowners check their air conditioners, and we’re confident we can get things running again in no time. Contact us at 574-218-6404 to schedule air conditioning repair in Elkhart 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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