Fix Your Frozen Air Conditioner with These 3 Quick Tips

Does the air flowing from your supply registers suddenly feel hot? Look at the indoor portion of your air conditioner. This part is located inside your furnace or air handler, if you rely on a heat pump. If there’s water dripping onto the floor, there may be frost on the evaporator coil. The AC coil inside the system may have frosted over. You’ll need to thaw it before it can cool your home again.

Here’s the steps you should take. If you can’t get the coil frost-free, Jack Nelson Service Experts is here to assist you with air conditioning repair in Tulsa backed by a 100% satisfaction guarantee.*

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

First things first—move the thermostat from “cool” to “off.” This prevents chilly refrigerant from flowing to the outdoor compressor, which could hurt it and cause an expensive repair.

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

It might take not more than an hour or the better part of a day for the ice to defrost, depending on the degree of the ice. While you’re waiting, watch the condensate pan below the AC unit. If the drain line is clogged, it might overflow as the ice melts, likely causing water damage.

Step 2: Troubleshoot the Issue

Poor airflow is a main cause for an AC to freeze up. Here’s how to figure out the issue:

  • Check the filter. Low airflow through a filthy filter could be the problem. Inspect and replace the filter monthly or as soon as you notice dust accumulation.
  • Open any shut supply vents. Your residence’s supply registers should remain open all the time. Shutting vents limits airflow over the evaporator coil, which could cause it to freeze.
  • Be on the lookout for blocked return vents. These often don’t use adjustable louvers, but furniture, rugs or curtains can still obstruct them.
  • Insufficient refrigerant: While airflow restrictions are the most common suspect, your air conditioner might also not have enough refrigerant. Depending on when it was replaced, it may use Freon® or Puron®. Insufficient refrigerant necessitates skilled attention from a certified HVAC specialist. H2: Step 3: Call an HVAC Technician at Jack Nelson Service Experts

If low airflow doesn’t feel like the problem, then another issue is leading your AC freeze. If this is what’s happening, merely thawing it out won’t fix the trouble. The evaporator coil is likely to freeze again unless you fix the underlying cause. Contact an HVAC specialist to address issues with your air conditioner, which can include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t get used up. Insufficient refrigerant indicates a leak somewhere. Only a tech can locate the leak, mend it, and recharge the air conditioner to the proper concentration.
  • Filthy evaporator coil: If dust builds up on the coil, air can’t reach it, and it’s liable to freeze.
  • Nonfunctional blower: A defective motor or unbalanced fan could halt airflow over the evaporator coil.

When your AC freezes up, contact the NATE-certified technicians at Jack Nelson Service Experts to fix the problem. We have a lot of experience helping homeowners check their air conditioners, and we’re sure we can get things running again fast. Contact us at 918-212-8927 to book air conditioning repair in Tulsa 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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