Get Your Frozen Air Conditioner Working Again with These 3 Quick Tips

Does the air coming from your supply registers unexpectedly feel not cold enough? Check the indoor component of your air conditioner. This component is situated in your furnace or air handler, if you have a heat pump. If there’s water seeping onto the floor, there might be crystals on the evaporator coil. The AC coil inside the system could have frosted over. You’ll need to melt it before it can cool your residence again.

Here’s the steps you should take. If you can’t get the coil frost-free, Fras-Air/General Service Experts is here to assist you with air conditioning repair in Hillsborough upheld by a 100% satisfaction guarantee.*

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

First things first—set the thermostat from “cool” to “off.” This halts cold refrigerant from going to the outdoor compressor, which could hurt it and cause an expensive repair.

After that, adjust the fan from “auto” to “on.” This creates warm airflow over the frosty coils to force them to thaw faster. Remember to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It can take under an hour or the majority of the day for the ice to thaw, depending on the level of the accumulation. While you’re waiting, watch the condensate pan below the AC unit. If the drain line is blocked, it could create a mess as the ice melts, likely creating water damage.

Step 2: Diagnose the Problem

Low airflow is a leading explanation for an AC to frost over. Here’s how to troubleshoot the issue:

  • Inspect the filter. Poor airflow through a clogged filter could be to blame. Look at and change the filter each month or as soon as you observe a layer of dust.
  • Open any sealed supply vents. Your home’s supply registers should remain open all the time. Sealing vents limits airflow over the evaporator coil, which might result in it freezing.
  • Check for blocked return vents. These usually don’t have adjustable louvers, but furniture, rugs or curtains can still block them.
  • Low refrigerant: While airflow restrictions are the most typical suspect, your air conditioning could also be low on refrigerant. Depending on when it was replaced, it may have Freon® or Puron®. Low refrigerant requires pro help from a certified HVAC technician. H2: Step 3: Get in Touch with an HVAC Professional at Fras-Air/General Service Experts

If poor airflow doesn’t appear to be the problem, then another problem is causing your AC freeze up. If this is what’s going on, merely defrosting it won’t repair the problem. The evaporator coil will probably keep freezing unless you fix the underlying cause. Call an HVAC pro to look for problems with your air conditioner, which can include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run low. Low refrigerant is a sign of a leak somewhere. Only a pro can locate the leak, repair it, and recharge the system to the proper amount.
  • Dirty evaporator coil: If dirt builds up on the coil, air can’t flow over it, and it’s liable to freeze.
  • Nonfunctional blower: A faulty motor or unbalanced fan might prevent airflow over the evaporator coil.

When your AC freezes up, get in touch with the NATE-certified professionals at Fras-Air/General Service Experts to take care of the problem. We have years of experience helping homeowners troubleshoot their air conditioners, and we’re confident we can get things working again fast. Contact us at 908-448-2154 to get air conditioning repair in Hillsborough with us today.


*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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