Repair Your Frozen Air Conditioner with These 3 Easy Tips

Does the air coming from your supply registers unexpectedly appear warm? Inspect the indoor part of your air conditioner. This part is situated inside your furnace or air handler, if you rely on a heat pump. If there’s water dripping onto the floor, there might be crystals on the evaporator coil. The AC coil inside the equipment may have frozen 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 frost-free, Midland Air Service Experts is here to support you with air conditioning repair in Columbia backed by a 100% satisfaction guarantee.*

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

To get started—switch the thermostat from “cool” to “off.” This prevents cold refrigerant from moving to the outdoor compressor, which could damage it and result in an expensive repair.

Then, adjust the fan from “auto” to “on.” This produces heated airflow over the crystallized 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 can take under an hour or the better part of a day for the ice to thaw, depending on the amount of the ice. While you’re waiting, watch the condensate pan below the AC unit. If the drain line is blocked, it may create a mess as the ice melts, potentially creating water damage.

Step 2: Pinpoint the Issue

Poor airflow is a chief explanation for an AC to freeze up. Here’s how to troubleshoot the situation:

  • Check the filter. Low airflow through a filthy filter could be the issue. Look at and replace the filter monthly or as soon as you notice dust buildup.
  • Open any shut supply vents. Your house’s supply registers should be open constantly. Shutting vents decreases airflow over the evaporator coil, which can cause it to freeze.
  • Look for blocked return vents. These typically don’t come with adjustable louvers, but furniture, rugs or curtains can still block them.
  • Insufficient refrigerant: While airflow restrictions are the most typical cause, your air conditioner may also not have enough refrigerant. Depending on how old it is, it may rely on Freon® or Puron®. Not enough refrigerant calls for skilled attention from a certified HVAC specialist. H2: Step 3: Get in Touch with an HVAC Professional at Midland Air Service Experts

If poor airflow doesn’t feel like the issue, then another issue is leading your AC frost over. If this is what’s happening, simply letting it melt won’t take care of the problem. The evaporator coil will probably keep freezing unless you repair the main cause. Contact an HVAC tech to address troubles with your air conditioner, which may include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run low. Not enough refrigerant means there’s a leak somewhere. Only a tech can pinpoint the leak, repair it, and recharge the air conditioning to the correct level.
  • Grimy evaporator coil: If dirt builds up on the coil, air can’t reach it, and it’s liable to freeze.
  • Nonfunctional blower: A defective motor or unbalanced fan may stop airflow over the evaporator coil.

When your AC freezes up, get in touch with the NATE-certified technicians at Midland Air Service Experts to take care of the situation. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re confident we can get things operating again in no time. Contact us at 803-399-7208 to get air conditioning repair in Columbia 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.

Contact Us