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Quick Steps to Repair a Frozen Air Conditioner

Does the air flowing from your supply registers unexpectedly appear warm? Check the indoor component of your air conditioner. This component is situated inside your furnace or air handler, if you rely on a heat pump. If there’s water seeping onto the floor, there might be frost on the evaporator coil. The AC coil in the system could have frozen. You’ll need to thaw it before it can cool your residence again. 

Here’s what to do. If you can’t get the coil frost-free, Service Experts Heating, Air Conditioning & Plumbing is here to support you with air conditioning repair in the U.S. backed by 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 chilly refrigerant from going to the outdoor compressor, which could damage it and result in a costly repair. 

Then, adjust the fan from “auto” to “on.” This makes hot 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 start a cooling cycle. 

It might take under an hour or the majority of the day for the ice to defrost, depending on the amount of the buildup. While you’re waiting, watch the condensate pan underneath the AC unit. If the drain line is blocked, it may overflow as the ice melts, potentially causing water damage. 

Step 2: Troubleshoot the Situation 

Low airflow is a leading reason for an AC to become frozen. Here’s how to get to the bottom of the problem: 

  • Exmaine the filter. Inadequate airflow through a filthy filter could be the issue. Look at and change the filter monthly or once you see dust accumulation. 
  • Open any closed supply vents. Your home’s supply registers should remain open all the time. Shutting vents limits airflow over the evaporator coil, which could cause it to freeze. 
  • Be on the lookout for covered return vents. These often don’t use shiftable louvers, but furniture, rugs or curtains can still block them. 
  • Insufficient refrigerant: While airflow restrictions are the most frequent cause, your system may also have insufficient refrigerant. Depending on when it was installed, it may use Freon®. Low refrigerant necessitates skilled assistance from a certified HVAC technician. H2: Step 3: Get in Touch with an HVAC Specialist at Service Experts Heating, Air Conditioning & Plumbing 

If inadequate airflow doesn’t seem to be the trouble, then another issue is causing your AC frost over. If this is what’s occurring, merely defrosting it won’t take care of the problem. The evaporator coil will probably continually freeze unless you take care of the root symptom. Contact an HVAC tech to check for issues with your air conditioner, which can include: 

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t run out. Not enough refrigerant means there’s a leak somewhere. Only a pro can locate the leak, fix it, and recharge the system to the correct concentration. 
  • Grimy evaporator coil: If grime accumulates on the coil, air can’t reach it, and it’s apt to freeze. 
  • Malfunctioning blower: A bad motor or unbalanced fan might prevent airflow over the evaporator coil. 

If your AC freezes up, get in touch with the ACE-certified technicians at Service Experts Heating, Air Conditioning & Plumbing to repair the issue. We have a lot of experience helping homeowners check their air conditioners, and we’re sure we can get things operating again fast. Contact us at 866-397-3787 to get air conditioning repair in the U.S. with us now. 

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