3 Fast Ways to Restore a Frozen Air Conditioner

Does the air emitting from your supply registers unexpectedly appear warm? Inspect the indoor component of your air conditioner. This component is located within your furnace or air handler, if you rely on a heat pump. If there’s water dripping onto the floor, there might be frost on the evaporator coil. The AC coil inside the equipment could have frosted over. You’ll need to melt it before it can cool your residence again.

Here’s the things you should do. If you can’t get the coil defrosted, Rob's Albertan Service Experts is here to help with air conditioning repair in Edmonton upheld by a 100% satisfaction guarantee.*

Step 1: Set the Air Conditioning to Off and the Blower On

To begin—move the thermostat from “cool” to “off.” This prevents chilled refrigerant from flowing to the outdoor compressor, which could harm it and lead to an expensive repair.

Next, switch the fan from “auto” to “on.” This produces warm airflow over the frosty coils to force them to thaw faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

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

Step 2: Troubleshoot the Problem

Low airflow is a leading cause for an AC to freeze up. Here’s how to get to the bottom of the problem:

  • Look at the filter. Poor airflow through a dusty filter could be to blame. Check and change the filter once a month or immediately when you notice a layer of dust.
  • Open any closed supply vents. Your residence’s supply registers should remain open always. Closing vents decreases airflow over the evaporator coil, which can lead it to freeze.
  • Be on the lookout for obstructed return vents. These usually don’t come with moveable louvers, but furniture, rugs or curtains can still obstruct them.
  • Insufficient refrigerant: While airflow restrictions are the most common cause, your system might also not have enough refrigerant. Depending on when it was installed, it may have Freon® or Puron®. Insufficient refrigerant necessitates professional support from a certified HVAC technician. H2: Step 3: Contact an HVAC Specialist at Rob's Albertan Service Experts

If low airflow doesn’t seem to be the problem, then another issue is making your AC freeze up. If this is what’s going on, simply letting it melt won’t take care of the issue. The evaporator coil will possibly freeze again unless you take care of the underlying problem. Get in touch with an HVAC pro to look for troubles with your air conditioner, which could include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run low. Low refrigerant signals a leak somewhere. Only a pro can find the leak, fix it, and recharge the air conditioner to the proper concentration.
  • Dirty evaporator coil: If dirt accumulates on the coil, air can’t flow over it, and it’s apt to freeze.
  • Nonfunctional blower: A faulty motor or unbalanced fan can stop airflow over the evaporator coil.

If your AC freezes up, call on the NATE-certified specialists at Rob's Albertan Service Experts to fix the problem. We have lots of experience helping homeowners check their air conditioners, and we’re sure we can get things operating again fast. Contact us at 780-800-9047 to get air conditioning repair in Edmonton with us today.


*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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