3 Fast Steps to Fix a Frozen Air Conditioner

Does the air flowing from your supply registers suddenly appear warm? Check the indoor part of your air conditioner. This piece is located inside your furnace or air handler, if you rely on a heat pump. If there’s water leaking onto the floor, there could be crystals on the evaporator coil. The AC coil within the equipment might have frozen. You’ll need to thaw it before it can cool your residence again.

Here’s what to do. If you can’t get the coil frost-free, Service Experts Heating & Air Conditioning is here to help with air conditioning repair in Denver backed 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 prevents chilly refrigerant from moving to the outdoor compressor, which could damage it and cause a pricey repair.

After that, move the fan from “auto” to “on.” This produces hot airflow over the frozen coils to help them thaw faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It could take not more than an hour or the better part of a day for the ice to melt, depending on the extent of the buildup. While you’re waiting, check the condensate pan under the AC unit. If the drain line is clogged, it could spill over as the ice melts, potentially causing water damage.

Step 2: Troubleshoot the Situation

Poor airflow is a primary explanation for an AC to freeze up. Here’s how to figure out the problem:

  • Exmaine the filter. Insufficient airflow through a filthy filter could be to blame. Check and replace the filter monthly or immediately when you observe dust buildup.
  • Open any shut supply vents. Your house’s supply registers should be open constantly. Sealing vents decreases airflow over the evaporator coil, which could lead it to freeze.
  • Check for covered return vents. These typically don’t have shiftable louvers, but furniture, rugs or curtains can still obstruct them.
  • Low refrigerant: While airflow restrictions are the most typical culprit, your air conditioning could also have insufficient refrigerant. Depending on how old it is, it may rely on Freon®. Insufficient refrigerant necessitates skilled assistance from a certified HVAC technician. H2: Step 3: Call an HVAC Tech at Service Experts Heating & Air Conditioning

If poor airflow doesn’t feel like the trouble, then another problem is leading your AC freeze up. If this is what’s happening, just defrosting it won’t take care of the problem. The evaporator coil will possibly continually freeze unless you fix the root cause. Call an HVAC pro to address issues with your air conditioner, which may include:

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t get used up. Not enough refrigerant indicates a leak somewhere. Only a specialist can locate the leak, fix it, and recharge the air conditioner to the proper level.
  • Filthy evaporator coil: If grime accumulates on the coil, air can’t reach it, and it’s liable to freeze.
  • Malfunctioning blower: A defective motor or unbalanced fan could prevent airflow over the evaporator coil.

When your AC freezes up, contact the ACE-certified specialists at Service Experts Heating & Air Conditioning to fix the problem. We have lots of experience helping homeowners troubleshoot their air conditioners, and we’re sure we can get things working again fast. Contact us at 303-647-5853 to schedule air conditioning repair in Denver 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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