Fast Steps for Fixing a Frozen Air Conditioner

Does the air coming from your supply registers suddenly appear not cold enough? Check the indoor component of your air conditioner. This component is housed within your furnace or air handler, if you have a heat pump. If there’s water leaking onto the floor, there might be ice on the evaporator coil. The AC coil inside the system might have frozen over. 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 assist you with air conditioning repair in the U.S. that includes a a 100% satisfaction guarantee.* 

Step 1: Set the Air Conditioning to Off and the Blower On 

To get started—switch the thermostat from “cool” to “off.” This halts chilly refrigerant from moving to the outdoor compressor, which could damage it and lead to a pricey repair. 

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

It may take under an hour or the better part of a day for the ice to defrost, depending on the degree of the accumulation. While you’re waiting, check the condensate pan under the AC unit. If the drain line is blocked, it can cause a mess as the ice melts, possibly resulting in water damage. 

Step 2: Diagnose the Trouble 

Poor airflow is a chief cause for an AC to become frozen. Here’s how to figure out the situation: 

  • Check the filter. Inadequate airflow through a dirty filter could be to blame. Look at and change the filter once a month or once you see a layer of dust. 
  • Open any sealed supply vents. Your home’s supply registers should be open constantly. Closing vents decreases airflow over the evaporator coil, which could cause it to freeze. 
  • Check for obstructed return vents. These often don’t come with shiftable louvers, but furniture, rugs or curtains can still block them. 
  • Low refrigerant: While airflow restrictions are the most common suspect, your air conditioning might also be low on refrigerant. Depending on its age, it may have Freon®. Not enough refrigerant necessitates pro support from a certified HVAC technician. H2: Step 3: Call an HVAC Tech at Service Experts Heating, Air Conditioning & Plumbing 

If low airflow doesn’t feel like the issue, then another issue is making your AC freeze up. If this is what’s occurring, merely thawing it out won’t repair the issue. The evaporator coil will probably freeze again unless you repair the main cause. Get in touch with an HVAC professional to check for problems with your air conditioner, which might include: 

  • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run out. Low refrigerant means there’s a leak somewhere. Only a specialist can find the leak, mend it, and recharge the air conditioner to the correct concentration. 
  • Grimy evaporator coil: If dust accumulates on the coil, air can’t get to it, and it’s apt to freeze. 
  • Malfunctioning blower: A bad motor or unbalanced fan could stop airflow over the evaporator coil. 

If your AC freezes up, contact the ACE-certified technicians at Service Experts Heating, Air Conditioning & Plumbing to take care of the situation. We have a lot of experience helping homeowners troubleshoot their air conditioners, and we’re sure we can get things working again in no time. Contact us at 866-397-3787 to schedule air conditioning repair in the U.S. with us today. 

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