Fix Your Frozen Air Conditioner with These 3 Quick Tips

Does the air flowing from your supply registers unexpectedly feel hot? Inspect the indoor portion of your air conditioner. This part is situated within your furnace or air handler, if you rely on a heat pump. If there’s water leaking onto the floor, there might be frost on the evaporator coil. The AC coil in the equipment may have frozen over. You’ll need to defrost it before it can cool your home again.

Here’s the things you should do. If you can’t get the coil frost-free, Service Experts Heating & Air Conditioning is here to assist you with air conditioning repair in Naples backed by a 100% satisfaction guarantee.*

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

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

After that, adjust the fan from “auto” to “on.” This produces heated airflow over the frosty coils to help them defrost faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t begin a cooling cycle.

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

Step 2: Troubleshoot the Issue

Insufficient airflow is a main explanation for an AC to freeze up. Here’s how to troubleshoot the problem:

  • Check the filter. Inadequate airflow through a dusty filter could be the issue. Look at and put in a new filter once a month or immediately when you notice dust accumulation.
  • Open any closed supply vents. Your home’s supply registers should stay open always. Shutting vents decreases airflow over the evaporator coil, which could lead it to freeze.
  • Be on the lookout for covered return vents. These typically don’t have moveable louvers, but furniture, rugs or curtains can still block them.
  • Not enough refrigerant: While airflow restrictions are the most common cause, your air conditioner may also be low on refrigerant. Depending on how old it is, it may use Freon® or Puron®. Insufficient refrigerant requires pro support from a certified HVAC technician. H2: Step 3: Get in Touch with an HVAC Pro at Service Experts Heating & Air Conditioning

If low airflow doesn’t seem to be the trouble, then something else is causing your AC freeze up. If this is what’s going on, simply defrosting it won’t take care of the issue. The evaporator coil will probably keep freezing unless you fix the main issue. Get in touch with an HVAC specialist to look for problems with your air conditioner, which might include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t get used up. Insufficient refrigerant means there’s a leak somewhere. Only a specialist can find the leak, fix it, and recharge the system to the appropriate amount.
  • Filthy evaporator coil: If grime builds up on the coil, air can’t reach it, and it’s apt to freeze.
  • Nonfunctional blower: A defective motor or unbalanced fan may prevent airflow over the evaporator coil.

If your AC freezes up, get in touch with the NATE-certified pros at Service Experts Heating & Air Conditioning to take care of the situation. We have years of experience helping homeowners diagnose their air conditioners, and we’re sure we can get things running again quickly. Contact us at 239-908-6991 to get air conditioning repair in Naples with us right away.


*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.

Contact Us