Repair Your Frozen Air Conditioner with These 3 Simple Tips

Does the air coming from your supply registers unexpectedly seem hot? Check the indoor portion of your air conditioner. This part is located within your furnace or air handler, if you have a heat pump. If there’s water dripping onto the floor, there could be crystals on the evaporator coil. The AC coil inside the system might have frozen over. 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 back to normal, Peachtree Service Experts is here to help with air conditioning repair in Atlanta backed by a 100% satisfaction guarantee.*

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

To get started—switch the thermostat from “cool” to “off.” This halts chilled refrigerant from flowing to the outdoor compressor, which could damage it and result in a pricey repair.

Next, adjust the fan from “auto” to “on.” This creates heated airflow over the frozen coils to help them defrost faster. Remember to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.

It can take under an hour or the better part of a day for the ice to thaw, depending on the level of the buildup. While you’re waiting, watch the condensate pan below the AC unit. If the drain line is clogged, it could overflow as the ice melts, potentially resulting in water damage.

Step 2: Diagnose the Issue

Low airflow is a chief cause for an AC to frost over. Here’s how to get to the bottom of the situation:

  • Check the filter. Inadequate airflow through a filthy filter could be the problem. Look at and change the filter monthly or immediately when you see dust accumulation.
  • Open any shut supply vents. Your home’s supply registers should stay open all the time. Shutting vents decreases airflow over the evaporator coil, which might cause it to freeze.
  • Look for obstructed return vents. These usually don’t use shiftable louvers, but furniture, rugs or curtains can still obstruct them.
  • Insufficient refrigerant: While airflow restrictions are the most common culprit, your air conditioner could also be low on refrigerant. Depending on when it was replaced, it may have Freon® or Puron®. Insufficient refrigerant necessitates professional attention from a certified HVAC technician. H2: Step 3: Call an HVAC Pro at Peachtree Service Experts

If inadequate airflow doesn’t seem to be the problem, then another issue is leading your AC frost over. If this is what’s occurring, simply defrosting it won’t take care of the issue. The evaporator coil is likely to freeze again unless you take care of the root problem. Call an HVAC specialist to look for issues with your air conditioner, which might include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t get used up. Not enough refrigerant signals a leak somewhere. Only a technician can find the leak, repair it, and recharge the air conditioner to the proper level.
  • Filthy evaporator coil: If dust accumulates on the coil, air can’t get to it, and it’s apt to freeze.
  • Malfunctioning blower: A defective motor or unbalanced fan may stop airflow over the evaporator coil.

When your AC freezes up, call on the NATE-certified techs at Peachtree Service Experts to repair the issue. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re confident we can get things running again fast. Contact us at 678-235-9699 to schedule air conditioning repair in Atlanta 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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