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

Does the air emitting from your supply registers abruptly feel hot? Look at the indoor portion of your air conditioner. This piece is situated within 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 within the system might have frozen over. You’ll need to thaw it before it can cool your home again.

Here’s the things you should do. If you can’t get the coil frost-free, Neal Harris Service Experts is here to assist you with air conditioning repair in Kansas City 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 cold refrigerant from going to the outdoor compressor, which could hurt it and result in an expensive repair.

After that, move the fan from “auto” to “on.” This creates 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 most of the day for the ice to defrost, depending on the extent of the buildup. While you’re waiting, keep an eye on the condensate pan underneath the AC unit. If the drain line is blocked, it may create a mess as the ice melts, possibly causing water damage.

Step 2: Pinpoint the Situation

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

  • Look at the filter. Insufficient airflow through a filthy filter could be the issue. Inspect and replace the filter once a month or immediately when you observe a layer of dust.
  • Open any closed supply vents. Your house’s supply registers should stay open constantly. Sealing vents reduces airflow over the evaporator coil, which may result in it freezing.
  • Check for covered return vents. These usually don’t use shiftable louvers, but furniture, rugs or curtains can still obstruct them.
  • Not enough refrigerant: While airflow restrictions are the most typical cause, your air conditioner may also not have enough refrigerant. Depending on its age, it may use Freon®. Insufficient refrigerant requires skilled attention from a certified HVAC specialist. H2: Step 3: Contact an HVAC Expert at Neal Harris Service Experts

If inadequate airflow doesn’t appear to be the problem, then another issue is leading your AC freeze up. If this is the case, just defrosting it won’t take care of the issue. The evaporator coil will probably continually freeze unless you take care of the root symptom. Get in touch with an HVAC technician to check for issues with your air conditioner, which may include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run out. Insufficient refrigerant means there’s a leak somewhere. Only a tech can locate the leak, mend it, and recharge the system to the correct concentration.
  • Filthy evaporator coil: If dust builds up on the coil, air can’t reach it, and it’s liable to freeze.
  • Broken blower: A defective motor or unbalanced fan can prevent airflow over the evaporator coil.

The next time your AC freezes up, contact the ACE-certified techs at Neal Harris Service Experts to fix the situation. We have lots of experience helping homeowners check their air conditioners, and we’re certain we can get things working again quickly. Contact us at 816-787-0500 to book air conditioning repair in Kansas City 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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