Fix Your Frozen Air Conditioner with These 3 Simple Tips

Does the air coming from your supply registers abruptly appear hot? Look at the indoor portion of your air conditioner. This piece is situated in your furnace or air handler, if you use a heat pump. If there’s water dripping onto the floor, there may be crystals on the evaporator coil. The AC coil within the system may have frozen. You’ll need to thaw it before it can cool your home again.

Here’s the steps you should take. If you can’t get the coil defrosted, Stallion Heating Plumbing Air Conditioning is here to assist you with air conditioning repair in Philadelphia that includes a a 100% satisfaction guarantee.*

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

First things first—move the thermostat from “cool” to “off.” This halts cold refrigerant from flowing to the outdoor compressor, which could damage it and lead to a costly repair.

Next, switch the fan from “auto” to “on.” This creates heated airflow over the frozen 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 might take less than an hour or the majority of the day for the ice to melt, depending on the level of the buildup. While you’re waiting, keep an eye on the condensate pan underneath the AC unit. If the drain line is blocked, it could spill over as the ice melts, possibly causing water damage.

Step 2: Diagnose the Problem

Not enough airflow is a prime cause for an AC to freeze up. Here’s how to troubleshoot the problem:

  • Inspect the filter. Low airflow through a clogged filter could be the problem. Inspect and replace the filter once a month or once you observe dust accumulation.
  • Open any closed supply vents. Your residence’s supply registers should be open always. Shutting vents reduces airflow over the evaporator coil, which may cause it to freeze.
  • Be on the lookout for covered return vents. These often don’t use adjustable louvers, but furniture, rugs or curtains can still obstruct them.
  • Low refrigerant: While airflow restrictions are the most frequent cause, your air conditioner may also have insufficient refrigerant. Depending on when it was replaced, it may have Freon®. Not enough refrigerant calls for skilled support from a certified HVAC tech. H2: Step 3: Get in Touch with an HVAC Technician at Stallion Heating Plumbing Air Conditioning

If poor airflow doesn’t appear to be the trouble, then something else is making your AC frost over. If this is what’s happening, merely thawing it out won’t repair the trouble. The evaporator coil will possibly keep freezing unless you take care of the underlying symptom. Contact an HVAC technician to look for problems with your air conditioner, which could include:

  • Refrigerant leak: AC units continuously use refrigerant, so it shouldn’t get used up. Not enough refrigerant is a sign of a leak somewhere. Only a specialist can locate the leak, mend it, and recharge the air conditioning to the correct concentration.
  • Filthy evaporator coil: If dirt collects on the coil, air can’t get to it, and it’s likely to freeze.
  • Broken blower: A broken motor or unbalanced fan can halt airflow over the evaporator coil.

If your AC freezes up, call on the ACE-certified technicians at Stallion Heating Plumbing Air Conditioning to take care of the problem. We have a lot of experience helping homeowners diagnose their air conditioners, and we’re sure we can get things working again quickly. Contact us at 215-278-9690 to schedule air conditioning repair in Philadelphia with us today.


*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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