Simple Steps for Repairing a Frozen Air Conditioner

Does the air flowing from your supply registers suddenly appear not cold enough? Look at the indoor part of your air conditioner. This part is housed in your furnace or air handler, if you use a heat pump. If there’s water dripping onto the floor, there might be crystals on the evaporator coil. The AC coil in the unit might have frosted over. You’ll need to defrost it before it can cool your residence again.

Here’s the things you should 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. backed by a 100% satisfaction guarantee.*

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

To begin—move the thermostat from “cool” to “off.” This prevents chilly refrigerant from going to the outdoor compressor, which could harm it and lead to an expensive repair.

After that, move the fan from “auto” to “on.” This produces hot airflow over the frozen coils to force them to defrost faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t trigger a cooling cycle.

It might take under an hour or the majority of the day for the ice to defrost, depending on the extent of the accumulation. While you’re waiting, check the condensate pan underneath the AC unit. If the drain line is blocked, it might spill over as the ice melts, potentially creating water damage.

Step 2: Pinpoint the Situation

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

    • Inspect the filter. Inadequate airflow through a dusty filter could be the culprit. Look at and change the filter monthly or as soon as you notice dust buildup.
    • Open any shut supply vents. Your home’s supply registers should stay open all the time. Sealing vents decreases airflow over the evaporator coil, which might result in it freezing.
    • Be on the lookout for blocked return vents. These often don’t have shiftable louvers, but furniture, rugs or curtains can still cover them.
    • Low refrigerant: While airflow restrictions are the most common culprit, your air conditioner may also have insufficient refrigerant. Depending on when it was replaced, it may have Freon®. Low refrigerant calls for pro help from a certified HVAC tech. H2: Step 3: Call an HVAC Tech at Service Experts Heating, Air Conditioning & Plumbing

If insufficient airflow doesn’t appear to be the trouble, then something else is causing your AC freeze up. If this is what’s going on, just letting it melt won’t repair the trouble. The evaporator coil is likely to freeze again unless you fix the main symptom. Get in touch with an HVAC tech to address troubles with your air conditioner, which could include:

    • Refrigerant leak: AC units keep using refrigerant, so it shouldn’t run out. Insufficient refrigerant means there’s a leak somewhere. Only a specialist can locate the leak, fix it, and recharge the air conditioning to the appropriate amount.
    • Filthy evaporator coil: If dust accumulates on the coil, air can’t get to it, and it’s apt to freeze.
    • Nonfunctional blower: A bad motor or unbalanced fan may halt airflow over the evaporator coil.

If your AC freezes up, contact the ACE-certified specialists at Service Experts Heating, Air Conditioning & Plumbing to take care of the situation. We have lots of experience helping homeowners troubleshoot their air conditioners, and we’re certain we can get things working again quickly. Contact us at 866-397-3787 to book air conditioning repair in the U.S. with us now.

Savings For You

See All Offers Here >
Service Experts Advantage Program logo

Make No Payments for 30 Days!

  • Upgrade to Worry-Free Comfort with the Advantage Program and make NO payments for 30 days!
maintenance icon

$50 OFF HVAC Tune-up Special

There’s no reason to skip your seasonal maintenance that saves energy and helps ensure your air conditioner and heater will work reliably all season long.

  • Regularly $129, now only $79
  • Save up to 30% on energy bills
  • Written Expert Service Guarantee

© 2023 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC and used under license by SE Canada Inc. All Rights Reserved. *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.