Fix Your Frozen Air Conditioner with These 3 Easy Tips

Does the air flowing from your supply registers unexpectedly feel not cold enough? Look at the indoor part of your air conditioner. This part is located inside your furnace or air handler, if you use a heat pump. If there’s water seeping onto the floor, there might be frost on the evaporator coil. The AC coil inside the unit might have frozen over. You’ll need to defrost it before it can cool your house again.

Here’s the things you should do. If you can’t get the coil defrosted, Service Experts Heating & Air Conditioning is here to assist you with air conditioning repair in Livermore backed by a 100% satisfaction guarantee.*

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

To begin—move the thermostat from “cool” to “off.” This halts chilled refrigerant from going to the outdoor compressor, which could hurt it and result in an expensive repair.

Then, move the fan from “auto” to “on.” This creates heated airflow over the frozen coils to force them to thaw faster. Remember 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 melt, depending on the extent of the ice. While you’re waiting, keep an eye on the condensate pan below the AC unit. If the drain line is obstructed, it might overflow as the ice melts, likely causing water damage.

Step 2: Diagnose the Trouble

Insufficient airflow is a primary cause for an AC to frost over. Here’s how to figure out the issue:

  • Exmaine the filter. Low airflow through a clogged filter could be the culprit. Inspect and replace the filter once a month or as soon as you see dust accumulation.
  • Open any sealed supply vents. Your home’s supply registers should remain open constantly. Sealing vents decreases airflow over the evaporator coil, which might cause it to freeze.
  • Be on the lookout for obstructed return vents. These typically don’t use moveable louvers, but furniture, rugs or curtains can still block them.
  • Low refrigerant: While airflow restrictions are the most frequent cause, your air conditioner could also be low on refrigerant. Depending on when it was replaced, it may rely on Freon® or Puron®. Not enough refrigerant necessitates skilled support from a certified HVAC specialist. H2: Step 3: Get in Touch with an HVAC Pro at Service Experts Heating & Air Conditioning

If poor airflow doesn’t feel like the issue, then something else is causing your AC freeze. If this is what’s occurring, just thawing it out won’t fix the issue. The evaporator coil will probably keep freezing unless you fix the underlying cause. Get in touch with an HVAC technician to look for issues with your air conditioner, which may include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t get used up. Low refrigerant is a sign of a leak somewhere. Only a professional can locate the leak, repair it, and recharge the air conditioner to the proper concentration.
  • Dirty evaporator coil: If grime accumulates on the coil, air can’t reach it, and it’s liable to freeze.
  • Malfunctioning blower: A bad motor or unbalanced fan might halt airflow over the evaporator coil.

If your AC freezes up, call on the NATE-certified professionals at Service Experts Heating & Air Conditioning to repair the problem. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re certain we can get things running again quickly. Contact us at 925-364-5427 to get air conditioning repair in Livermore 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.

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