Repair Your Frozen Air Conditioner with These 3 Fast Tips

Does the air coming from your supply registers suddenly seem not cold enough? Look at the indoor component of your air conditioner. This piece is located in your furnace or air handler, if you use a heat pump. If there’s water seeping onto the floor, there may be crystals on the evaporator coil. The AC coil within the system might have frozen. You’ll need to melt it before it can cool your home again.

Here’s the steps you should take. If you can’t get the coil defrosted, Sunbeam Service Experts is here to help with air conditioning repair in Buffalo that includes a 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 halts chilled refrigerant from moving to the outdoor compressor, which could damage it and lead to a pricey repair.

After that, move the fan from “auto” to “on.” This creates warm airflow over the frozen 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 could take less than an hour or most of the day for the ice to thaw, depending on the level of the ice. While you’re waiting, check the condensate pan under the AC unit. If the drain line is obstructed, it can spill over as the ice melts, potentially creating water damage.

Step 2: Diagnose the Problem

Poor airflow is a leading explanation for an AC to freeze up. Here’s how to figure out the problem:

  • Inspect the filter. Poor airflow through a clogged filter could be the problem. Inspect and change the filter monthly or once you observe a layer of dust.
  • Open any sealed supply vents. Your home’s supply registers should stay open all the time. Sealing vents reduces airflow over the evaporator coil, which can lead it to freeze.
  • Check for covered return vents. These typically don’t use moveable louvers, but furniture, rugs or curtains can still obstruct them.
  • Insufficient refrigerant: While airflow restrictions are the most frequent culprit, your system might also be low on refrigerant. Depending on when it was installed, it may have Freon® or Puron®. Not enough refrigerant requires pro help from a certified HVAC technician. H2: Step 3: Call an HVAC Professional at Sunbeam Service Experts

If inadequate airflow doesn’t feel like the problem, then another issue is causing your AC freeze up. If this is what’s occurring, simply defrosting it won’t take care of the problem. The evaporator coil is likely to keep freezing unless you fix the main cause. Get in touch with an HVAC technician to look for problems with your air conditioner, which may include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t get used up. Not enough refrigerant indicates a leak somewhere. Only a professional can pinpoint the leak, repair it, and recharge the system to the appropriate amount.
  • Dirty evaporator coil: If dirt collects on the coil, air can’t flow over it, and it’s likely to freeze.
  • Nonfunctional blower: A faulty motor or unbalanced fan can stop airflow over the evaporator coil.

The next time your AC freezes up, get in touch with the NATE-certified technicians at Sunbeam Service Experts to take care of the situation. We have lots of experience helping homeowners check their air conditioners, and we’re sure we can get things running again in no time. Contact us at 716-427-6807 to schedule air conditioning repair in Buffalo 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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