Quick Steps to Fix a Frozen Air Conditioner

Does the air flowing from your supply registers abruptly seem hot? Look at the indoor part of your air conditioner. This piece is housed within your furnace or air handler, if you rely on a heat pump. If there’s water leaking onto the floor, there may be ice on the evaporator coil. The AC coil within the equipment might have frozen. 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, Stevenson Service Experts is here to assist you with air conditioning repair in Columbus upheld by a 100% satisfaction guarantee.* 

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

To get started—set the thermostat from “cool” to “off.” This stops cold refrigerant from flowing to the outdoor compressor, which could harm it and result in a costly repair. 

Next, adjust the fan from “auto” to “on.” This produces hot airflow over the frosty coils to make them melt faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle. 

It can take less than an hour or most of the day for the ice to defrost, depending on the amount of the accumulation. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is clogged, it could spill over as the ice melts, likely resulting in water damage. 

Step 2: Pinpoint the Issue 

Insufficient airflow is a chief explanation for an AC to freeze up. Here’s how to troubleshoot the situation: 

  • Inspect the filter. Inadequate airflow through a clogged filter could be to blame. Look at and change the filter once a month or as soon as you notice dust buildup. 
  • Open any closed supply vents. Your house’s supply registers should remain open all the time. Shutting vents reduces airflow over the evaporator coil, which could cause it to freeze. 
  • Look for covered return vents. These typically don’t have adjustable louvers, but furniture, rugs or curtains can still cover them. 
  • Not enough refrigerant: While airflow restrictions are the most frequent cause, your air conditioner might also not have enough refrigerant. Depending on when it was installed, it may have Freon®. Insufficient refrigerant requires skilled support from a certified HVAC tech. H2: Step 3: Get in Touch with an HVAC Technician at Stevenson Service Experts 

If inadequate airflow doesn’t feel like the trouble, then another issue is leading your AC freeze. If this is the case, simply defrosting it won’t repair the issue. The evaporator coil will probably freeze again unless you fix the root cause. Call an HVAC technician to address issues with your air conditioner, which can include: 

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run out. Insufficient refrigerant indicates a leak somewhere. Only a professional can find the leak, mend it, and recharge the air conditioner to the correct amount. 
  • Dirty evaporator coil: If grime builds up on the coil, air can’t flow over it, and it’s liable to freeze. 
  • Nonfunctional blower: A defective motor or unbalanced fan may prevent airflow over the evaporator coil. 

When your AC freezes up, call on the ACE-certified professionals at Stevenson Service Experts to repair the problem. We have years of experience helping homeowners check their air conditioners, and we’re certain we can get things working again fast. Contact us at 614-334-3192 to schedule air conditioning repair in Columbus with us right away. 

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