Simple Steps to Repair a Frozen Air Conditioner

Does the air emitting from your supply registers unexpectedly seem not cold enough? Inspect the indoor component of your air conditioner. This piece is situated inside your furnace or air handler, if you rely on a heat pump. If there’s water seeping onto the floor, there could be frost on the evaporator coil. The AC coil inside 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 back to normal, Levy & Son Service Experts is here to help with air conditioning repair in Dallas upheld by 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 chilled refrigerant from moving to the outdoor compressor, which could harm it and cause a costly repair. 

Next, move the fan from “auto” to “on.” This produces heated airflow over the frozen coils to make them defrost faster. Make sure to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle. 

It can take under an hour or most of the day for the ice to melt, depending on the degree of the accumulation. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is obstructed, it can spill over as the ice melts, likely creating water damage. 

Step 2: Diagnose the Issue 

Poor airflow is a chief cause for an AC to frost over. Here’s how to figure out the problem: 

  • Inspect the filter. Insufficient airflow through a clogged filter could be the problem. Inspect and put in a new filter monthly or immediately when you observe dust accumulation. 
  • Open any sealed supply vents. Your residence’s supply registers should stay open all the time. Shutting vents limits airflow over the evaporator coil, which may result in it freezing. 
  • Look for covered return vents. These typically don’t use moveable louvers, but furniture, rugs or curtains can still obstruct them. 
  • Not enough refrigerant: While airflow restrictions are the most common culprit, your air conditioner could also not have enough refrigerant. Depending on how old it is, it may rely on Freon®. Not enough refrigerant necessitates skilled attention from a certified HVAC tech. H2: Step 3: Contact an HVAC Tech at Levy & Son Service Experts 

If poor airflow doesn’t appear to be the issue, then something else is causing your AC freeze up. If this is what’s going on, just thawing it out won’t repair the problem. The evaporator coil will probably keep freezing unless you fix the root symptom. Contact an HVAC tech to look for issues with your air conditioner, which might include: 

  • Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run low. Not enough refrigerant means there’s a leak somewhere. Only a pro can find the leak, repair it, and recharge the air conditioner to the proper amount. 
  • 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 stop airflow over the evaporator coil. 

When your AC freezes up, get in touch with the ACE-certified specialists at Levy & Son Service Experts to repair the issue. We have lots of experience helping homeowners troubleshoot their air conditioners, and we’re sure we can get things operating again in no time. Contact us at 469-250-0932 to book air conditioning repair in Dallas with us now. 

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