3 Easy Ways to Fix a Frozen Air Conditioner

Does the air emitting from your supply registers abruptly appear warm? Look at the indoor portion of your air conditioner. This component is located in your furnace or air handler, if you use a heat pump. If there’s water dripping onto the floor, there may be ice on the evaporator coil. The AC coil in the equipment may have frozen. You’ll need to defrost it before it can cool your house again.

Here’s the steps you should take. If you can’t get the coil back to normal, Atmostemp Service Experts is here to support you with air conditioning repair in Voorhees upheld by a 100% satisfaction guarantee.*

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

To begin—move the thermostat from “cool” to “off.” This prevents cold refrigerant from flowing to the outdoor compressor, which could harm it and cause a pricey repair.

Then, move the fan from “auto” to “on.” This makes hot 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 begin a cooling cycle.

It might take under an hour or the majority of the day for the ice to defrost, depending on the degree of the buildup. While you’re waiting, keep an eye on the condensate pan below the AC unit. If the drain line is clogged, it may create a mess as the ice melts, likely creating water damage.

Step 2: Troubleshoot the Problem

Not enough airflow is a primary reason for an AC to freeze up. Here’s how to figure out the situation:

  • Look at the filter. Poor airflow through a dirty filter could be the problem. Check and replace the filter monthly or as soon as you see dust buildup.
  • Open any sealed supply vents. Your home’s supply registers should remain open constantly. Sealing vents decreases airflow over the evaporator coil, which could result in it freezing.
  • Check for covered return vents. These usually don’t use shiftable louvers, but furniture, rugs or curtains can still cover them.
  • Insufficient refrigerant: While airflow restrictions are the most typical culprit, your air conditioner might also be low on refrigerant. Depending on when it was replaced, it may use Freon®. Low refrigerant requires pro attention from a certified HVAC tech. H2: Step 3: Contact an HVAC Tech at Atmostemp Service Experts

If inadequate airflow doesn’t seem to be the trouble, then another issue is causing your AC freeze. If this is the case, merely letting it melt won’t take care of the trouble. The evaporator coil will possibly continually freeze unless you repair the underlying problem. Contact an HVAC tech to address troubles with your air conditioner, which might include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run low. Low refrigerant is a sign of a leak somewhere. Only a professional can find the leak, fix it, and recharge the air conditioning to the appropriate concentration.
  • Dirty evaporator coil: If dust accumulates on the coil, air can’t reach it, and it’s liable to freeze.
  • Nonfunctional blower: A bad motor or unbalanced fan could prevent airflow over the evaporator coil.

If your AC freezes up, call on the ACE-certified pros at Atmostemp Service Experts to fix the issue. We have years of experience helping homeowners troubleshoot their air conditioners, and we’re certain we can get things working again fast. Contact us at 856-310-4824 to get air conditioning repair in Voorhees 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.

chat now widget box