3 Easy Steps for Repairing a Frozen Air Conditioner

Does the air coming from your supply registers unexpectedly appear warm? Look at the indoor component of your air conditioner. This part is located in your furnace or air handler, if you have a heat pump. If there’s water dripping onto the floor, there could be frost 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 back to normal, Midland Air Service Experts is here to assist 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 flowing to the outdoor compressor, which could damage it and result in an expensive repair.

Then, adjust the fan from “auto” to “on.” This produces hot airflow over the frosty coils to help them thaw faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t begin a cooling cycle.

It can take not more than 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 could overflow as the ice melts, potentially creating water damage.

Step 2: Diagnose the Issue

Poor airflow is a leading 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 put in a new filter each month or as soon as you observe dust accumulation.
  • Open any sealed supply vents. Your house’s supply registers should be open always. Sealing vents decreases airflow over the evaporator coil, which might cause it to freeze.
  • Look for blocked return vents. These typically don’t use adjustable louvers, but furniture, rugs or curtains can still block them.
  • Not enough refrigerant: While airflow restrictions are the most typical cause, your air conditioning may also have insufficient refrigerant. Depending on how old it is, it may have Freon®. Not enough refrigerant necessitates pro 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 trouble, then another issue is leading your AC frost over. If this is the case, simply letting it melt won’t repair the problem. The evaporator coil will possibly continually freeze unless you repair the main problem. Get in touch with an HVAC pro to look for issues with your air conditioner, which could 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 locate the leak, repair it, and recharge the air conditioner to the appropriate level.
  • Grimy evaporator coil: If dust builds up on the coil, air can’t reach it, and it’s liable to freeze.
  • Nonfunctional blower: A faulty motor or unbalanced fan may halt airflow over the evaporator coil.

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

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