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Frozen in Your Tracks? What to Do When Your AC Unit Freezes Up



Here in South Florida, the last thing you want is a frozen air conditioner! But if you wake up to a malfunctioning unit and discover ice on the coils, don't panic. There are a few things you can do to thaw things out and get your cool air flowing again.


Why Does My AC Unit Freeze Up?

There are a couple of reasons why your AC might be acting like a mini-Arctic blast. The most common culprits are:

  • Dirty Coils:  Just like a clogged drain, dirty coils can restrict airflow and prevent the unit from properly absorbing heat. This trapped heat can cause the evaporator coil to freeze over.

  • Low Refrigerant Levels:  Refrigerant acts like the lifeblood of your AC, absorbing heat indoors and releasing it outdoors.  Low refrigerant levels mean there's not enough coolant circulating, leading to freezing.

  • Other Issues:  Sometimes malfunctioning thermostats, blocked drain lines, or even a failing compressor can contribute to a frozen AC unit.




What Can I Do?

If you discover a frozen AC unit, here are some steps you can take:

  1. Turn Off the Unit:  The first step is to stop the problem from getting worse. Turn off your thermostat and the AC unit at the breaker box.

  2. Let the Ice Melt Naturally:  Open all the vents in your home to allow air to circulate. Patience is key here!  Don't try to speed up the thawing process with a hairdryer, as this can damage the delicate coils.

  3. Improve Airflow:  While the ice melts, check your air filters and replace them if clogged. This will help ensure proper airflow when you restart the AC.

Once the Ice is Gone:

  • Turn the Unit Back On (But Wait!)  Resist the urge to crank the AC back on high right away. Let the system sit for at least 30 minutes to an hour to ensure everything is thawed completely.

  • Consider Professional Help:  While you may be able to resolve a one-time freezing issue with these steps, recurring freezing is a sign of a deeper problem.  A qualified HVAC technician can diagnose the cause and recommend the best course of action, whether it's cleaning the coils, refilling refrigerant, or addressing other underlying issues.



Preventative Measures:

The best way to avoid a frozen AC unit is with regular maintenance. Schedule annual check-ups with a trusted HVAC professional to ensure your system is clean, functioning properly, and refrigerant levels are topped off.

Stay Cool and Comfortable with Air-Tech HVAC

At Air-Tech HVAC, we are your South Florida experts in air conditioning for both residential and commercial properties. Our experienced technicians can diagnose and fix any AC problem, big or small.

Don't let a frozen AC unit ruin your day! Contact Air-Tech HVAC today for a maintenance check-up and keep your cool all summer long.

P.S.  Don't forget to check back next week for our blog post on "Thermostat Troubles? A Guide to Fixing Common Thermostat Issues."

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