Frozen A/C Unit: How to Safely Defrost Your Equipment

Running your air conditioner with a frozen component can seriously damage your system, but that doesn't mean you always have to wait for a technician to come and defrost your frozen A/C unit.

Start with a Gentle Approach

The safest way to defrost your air conditioner is to let nature take care of the ice. Turn off your system from the control panel, then shut off power to the system at the breaker in your home's electrical panel. Then just wait and let the ice thaw. Don't try to pry the ice off with your hands or a sharp object. You'll risk damaging the components or worse, injuring yourself.Depending on how much ice there is, it could take up to 24 hours to melt. Periodically check for standing water that might have pooled under your indoor evaporator coil and mop up any you find. If there's a lot of ice, put down some towels.

Try a Little Heat

If just a little ice has formed on your evaporator coil, you can defrost it faster using a hair dryer turned on to the lowest setting. Hold the hair dryer at least 12 inches from the coil. Too much heat can crack an evaporator coil, so use caution if you decide to go this route.After all the ice has melted, dry the system out by turning it on to "fan only" mode. This circulates air that will dry up any lingering moisture.Before you turn the system on again, though, take steps to correct the problem that caused your frozen A/C unit in the first place. That might mean replacing a dirty air filter, cleaning the evaporator coil or removing debris from the outdoor unit.If your air conditioner keeps freezing even though you're sure the components are clean, the problem could be due to a more serious issue such as a refrigerant leak or mechanical malfunction. In this case, call a technician.If you could use some help defrosting your frozen A/C unit, contact us at Air Assurance anywhere around Broken Arrow.

Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems). For more information about air conditioners and other HVAC topics, call us at 918-217-8273.

Keep Your Air Conditioner From Freezing

As hot as it gets in Broken Arrow in the summertime, your air conditioner can still freeze. If it's never happened to you before, it's a good idea to know what to do, in case you can fix the problem yourself. Even if you have to call for help, you will know what to do to limit damage until a technician arrives. Knowing a bit about how a frozen air conditioner occurs can also help you prevent this happening so that you're not sweltering on a hot summer day.

Change Your Air Filter

It may just sound too simple to be true, but a dirty air filter can actually cause your air conditioner to freeze by blocking air flow. The dirt buildup on the air filter can prevent an adequate amount of air from passing over the evaporator coil, so that the condensation on the coil can freeze.If you can't remember to check and change your air filter regularly, set yourself reminders on your computer or schedule maintenance with your HVAC consultant regularly a couple of times during cooling season to make sure your A/C is running right.

Improper Refrigerant Charge

Another reason for scheduling regular maintenance is to check the refrigerant charge for proper levels. Low levels may mean you have a leak, and a low refrigerant charge can cause your A/C to freeze up.

What to Do When the A/C Freezes

If your A/C isn't cooling properly and you find ice on the evaporator coils, turn the system off. Check the filter and change it, but allow the ice to defrost before you turn it back on. (You can turn on just the fan to speed up the procedure.) As the ice melts, check the drain pan under the evaporator coil to make sure it doesn't over flow.If the system still won't cool, call a licensed HVAC company. Only licensed technicians should handle refrigerant.

To learn more about dealing with a frozen air conditioner, contact Air Assurance. We offer exceptional service and customer satisfaction in Broken Arrow and the surrounding area.

Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems).Credit/Copyright Attribution: “GSPhotography/Shutterstock”