How to Fix a Frozen Air Conditioner

February 23, 2015

Summer’s coming (as hard as it is to believe right now) and here's an all-to-familiar scenario with the average homeowner: They’re at home, minding their own business, happily indulging a bowl of popcorn and watching a movie, when they notice that dreadful sound; drip... drip... drip. They turn their head to see the dog licking at a puddle that's gradually forming on the dining room floor. In a flash: Worry, stress, and that ”oh brother!” feeling. Where did the leak come from?; water heater, leaky toilet, shower, faucet? No – the air conditioning equipment may be frozen. This can strike anywhere, from Saint Charles to Thailand, regardless of summer heat.

Why Air Conditioners Freeze

The evaporator coil is the component of a central A/C unit that actually freezes. This component of the air conditioner transfers (evaporates) heat from the inside to the outside of your Saint Charles area home. The two main reasons why the evaporator coil may freeze:

  1. The restriction of the system’s airflow
  2. Low refrigerant

Either way, the outcome is that the air conditioner's evaporator coil cannot operate to properly disperse the heat, and in essence 'overcools' itself. The net effect of this super-cooling is condensation (that's water formation), and over time ice forms from that condensation as it cools below the freezing point. Yep, the A/C transformed into an old-school icebox.

What Can You Do When Your A/C Freezes?

  1. Turn the system completely off at the thermostat, and do not increase the thermostat temperature as a way to melt the frost on the coils. Ensure the A/C system is completely OFF.
  2. Confirm that there is nothing restricting the airflow to the system. Replace the furnace or air handler's filter as well as any return air filters. Open all the registers completely and verify that they are not impeded by furniture or curtains.
  3. Call Golden Seal Service Experts. The air conditioning system needs to be inspected by an ACE-certified professional to ensure there are no refrigerant leaks or damage to the equipment. Simply schedule a Performance Inspection or Repair Diagnostic online, or call to talk to a live person right away.

What Does it Cost to Repair?

This can become a pricey repair. When your unit freezes over it can lead to a totaled compressor. Replacing your compressor can cost as much as a downpayment on a brand new air conditioner. In fact, many homeowners are forced to choose between installing a new system or repairing the damaged unit. If you move fast, follow the instructions, and call a ACE-certified technician, you have better odds of getting a less expensive job.

Your technician will quickly analyze the problem and how to avoid the issue from occurring in the future. If a leak was really the cause (and that is rare, but possible), the leak has to be repaired or the unit will most likely freeze again.

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