3 Quick Ways to Fix a Frozen Air Conditioner

Does the air coming from your supply registers unexpectedly appear not cold enough? Check the indoor part of your air conditioner. This component is housed within your furnace or air handler, if you use a heat pump. If there’s water leaking onto the floor, there might be frost on the evaporator coil. The AC coil within the system could have frozen over. You’ll need to defrost it before it can cool your residence again.

Here’s the steps you should take. If you can’t get the coil defrosted, Knochelmann Service Experts is here to help with air conditioning repair in Sharonville that includes a a 100% satisfaction guarantee.*

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

To get started—move the thermostat from “cool” to “off.” This prevents cold refrigerant from flowing to the outdoor compressor, which could damage it and cause a pricey repair.

Then, switch the fan from “auto” to “on.” This creates hot airflow over the frosty coils to help them thaw faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It could take not more than an hour or the majority of the day for the ice to defrost, depending on the extent of the ice. While you’re waiting, check the condensate pan below the AC unit. If the drain line is blocked, it can create a mess as the ice melts, potentially resulting in water damage.

Step 2: Diagnose the Situation

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

  • Exmaine the filter. Insufficient airflow through a filthy filter could be to blame. Look at and change the filter once a month or once 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.
  • Check for blocked return vents. These often don’t use adjustable louvers, but furniture, rugs or curtains can still cover them.
  • Insufficient refrigerant: While airflow restrictions are the most frequent suspect, your air conditioner could also not have enough refrigerant. Depending on when it was replaced, it may have Freon®. Insufficient refrigerant calls for professional assistance from a certified HVAC technician. H2: Step 3: Call an HVAC Expert at Knochelmann Service Experts

If inadequate airflow doesn’t feel like the issue, then another issue is causing your AC frost over. If this is what’s going on, merely letting it melt won’t repair the trouble. The evaporator coil will possibly continually freeze unless you take care of the underlying symptom. Contact an HVAC professional to check for problems with your air conditioner, which may include:

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run out. Not enough refrigerant indicates a leak somewhere. Only a professional can find the leak, mend it, and recharge the air conditioner to the appropriate concentration.
  • Grimy evaporator coil: If dust accumulates on the coil, air can’t get to it, and it’s liable to freeze.
  • Broken blower: A bad motor or unbalanced fan can halt airflow over the evaporator coil.

The next time your AC freezes up, get in touch with the ACE-certified technicians at Knochelmann Service Experts to repair the situation. We have years of experience helping homeowners troubleshoot their air conditioners, and we’re sure we can get things operating again in no time. Contact us at 859-905-0834 to schedule air conditioning repair in Sharonville 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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