Repair Your Frozen Air Conditioner with These 3 Quick Tips

Does the air flowing from your supply registers unexpectedly appear hot? Check the indoor part of your air conditioner. This piece is housed in your furnace or air handler, if you rely on a heat pump. If there’s water seeping onto the floor, there might be ice 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 what to do. If you can’t get the coil defrosted, Strand Brothers Service Experts is here to help with air conditioning repair in Austin that includes a a 100% satisfaction guarantee.*

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

To get started—set the thermostat from “cool” to “off.” This stops chilly 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 makes warm airflow over the crystallized coils to help them defrost faster. Remember to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It can take less than an hour or most of the day for the ice to melt, depending on the amount of the buildup. While you’re waiting, keep an eye on the condensate pan underneath the AC unit. If the drain line is obstructed, it might spill over as the ice melts, possibly creating water damage.

Step 2: Pinpoint the Situation

Low airflow is a prime cause for an AC to freeze up. Here’s how to get to the bottom of the situation:

  • Inspect the filter. Inadequate airflow through a dirty filter could be the problem. Inspect and replace the filter each month or once you notice dust buildup.
  • Open any sealed supply vents. Your residence’s supply registers should remain open always. Sealing vents decreases airflow over the evaporator coil, which can result in it freezing.
  • Look for blocked return vents. These often don’t come with moveable louvers, but furniture, rugs or curtains can still obstruct them.
  • Not enough refrigerant: While airflow restrictions are the most typical suspect, your air conditioner could also have insufficient refrigerant. Depending on when it was installed, it may use Freon®. Not enough refrigerant calls for professional help from a certified HVAC tech. H2: Step 3: Call an HVAC Tech at Strand Brothers Service Experts

If inadequate airflow doesn’t appear to be the issue, then something else is leading your AC frost over. If this is the case, just defrosting it won’t take care of the issue. The evaporator coil will possibly freeze again unless you take care of the main symptom. Call an HVAC technician to address issues with your air conditioner, which can include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t get used up. Insufficient refrigerant signals a leak somewhere. Only a technician can locate the leak, fix it, and recharge the system to the appropriate concentration.
  • Grimy evaporator coil: If dust builds up on the coil, air can’t get to it, and it’s likely to freeze.
  • Nonfunctional blower: A broken motor or unbalanced fan can prevent airflow over the evaporator coil.

If your AC freezes up, contact the ACE-certified specialists at Strand Brothers Service Experts to take care of the trouble. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re sure we can get things operating again fast. Contact us at 512-596-1257 to schedule air conditioning repair in Austin 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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