3 Easy Steps for Fixing a Frozen Air Conditioner

Does the air flowing from your supply registers abruptly seem warm? Check the indoor portion of your air conditioner. This component is located inside your furnace or air handler, if you use a heat pump. If there’s water dripping onto the floor, there could be crystals on the evaporator coil. The AC coil inside the unit might have frozen over. You’ll need to thaw it before it can cool your house again.

Here’s what to do. If you can’t get the coil back to normal, Air Engineers Service Experts is here to help with air conditioning repair in Jacksonville upheld by a 100% satisfaction guarantee.*

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

To get started—move the thermostat from “cool” to “off.” This prevents cold refrigerant from moving to the outdoor compressor, which could harm it and lead to a costly repair.

Next, adjust the fan from “auto” to “on.” This creates warm airflow over the crystallized coils to make them defrost faster. Double check 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 the majority of the day for the ice to defrost, depending on the extent of the accumulation. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is clogged, it can spill over as the ice melts, potentially creating water damage.

Step 2: Pinpoint the Trouble

Bad airflow is a chief cause for an AC to become frozen. Here’s how to troubleshoot the problem:

  • Look at the filter. Inadequate airflow through a dirty filter could be the culprit. Check and put in a new filter each month or once you notice dust accumulation.
  • Open any shut supply vents. Your residence’s supply registers should remain open always. Shutting vents reduces airflow over the evaporator coil, which may result in it freezing.
  • Be on the lookout for obstructed return vents. These often don’t come with moveable louvers, but furniture, rugs or curtains can still block them.
  • Low refrigerant: While airflow restrictions are the most common culprit, your air conditioning may also not have enough refrigerant. Depending on when it was replaced, it may have Freon® or Puron®. Not enough refrigerant calls for pro attention from a certified HVAC specialist. H2: Step 3: Call an HVAC Expert at Air Engineers Service Experts

If poor airflow doesn’t appear to be the problem, then another issue is causing your AC frost over. If this is what’s going on, just defrosting it won’t fix the issue. The evaporator coil will possibly continually freeze unless you fix the main issue. Call an HVAC specialist to look for issues with your air conditioner, which could include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run low. Low refrigerant means there’s a leak somewhere. Only a technician can find the leak, mend it, and recharge the air conditioner to the appropriate level.
  • Grimy evaporator coil: If dirt collects on the coil, air can’t get to it, and it’s likely to freeze.
  • Broken blower: A faulty motor or unbalanced fan can halt airflow over the evaporator coil.

If your AC freezes up, get in touch with the NATE-certified Experts at Air Engineers Service Experts to repair the situation. We have years of experience helping homeowners diagnose their air conditioners, and we’re sure we can get things operating again fast. Contact us at 904-450-5672 to book air conditioning repair in Jacksonville with us today.


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