3 Quick Ways to Fix a Frozen Air Conditioner

Does the air emitting from your supply registers suddenly seem warm? Check the indoor component of your air conditioner. This component is housed in your furnace or air handler, if you rely on a heat pump. If there’s water dripping onto the floor, there may be crystals on the evaporator coil. The AC coil in the system may have frosted over. 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 frost-free, Stevenson Service Experts is here to assist you with air conditioning repair in Dayton backed by a 100% satisfaction guarantee.*

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

To get started—set the thermostat from “cool” to “off.” This stops chilly refrigerant from going to the outdoor compressor, which could harm it and lead to an expensive repair.

Next, switch the fan from “auto” to “on.” This makes heated airflow over the frosty coils to help them melt faster. Make sure 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 melt, depending on the amount of the ice. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is obstructed, it may cause a mess as the ice melts, possibly creating water damage.

Step 2: Troubleshoot the Issue

Bad airflow is a primary cause for an AC to frost over. Here’s how to figure out the issue:

  • Check the filter. Poor airflow through a filthy filter could be the culprit. Check and replace the filter each month or as soon as you see dust accumulation.
  • Open any shut supply vents. Your home’s supply registers should remain open all the time. Closing vents decreases airflow over the evaporator coil, which could result in it freezing.
  • Look for obstructed return vents. These typically don’t use adjustable louvers, but furniture, rugs or curtains can still obstruct them.
  • Low refrigerant: While airflow restrictions are the most frequent suspect, your air conditioner may also not have enough refrigerant. Depending on its age, it may rely on Freon® or Puron®. Low refrigerant necessitates skilled assistance from a certified HVAC specialist. H2: Step 3: Contact an HVAC Tech at Stevenson Service Experts

If inadequate airflow doesn’t feel like the trouble, then another issue is leading your AC freeze. If this is what’s going on, just defrosting it won’t take care of the trouble. The evaporator coil is likely to freeze again unless you fix the underlying symptom. Call an HVAC pro to address troubles with your air conditioner, which can include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run low. Insufficient refrigerant means there’s a leak somewhere. Only a technician can pinpoint the leak, fix it, and recharge the air conditioning to the appropriate level.
  • Dirty evaporator coil: If dust collects on the coil, air can’t reach it, and it’s apt to freeze.
  • Malfunctioning blower: A faulty motor or unbalanced fan can stop airflow over the evaporator coil.

If your AC freezes up, call on the NATE-certified Experts at Stevenson Service Experts to fix the trouble. We have years of experience helping homeowners diagnose their air conditioners, and we’re certain we can get things operating again quickly. Contact us at 937-503-7896 to get air conditioning repair in Dayton 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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