When the summer heat is at its peak, the last thing you want is for your air conditioning unit to freeze up. But what do you do when your AC unit freezes up? This can be a confusing and frustrating situation. However, understanding why this happens and what steps to take can help you address the problem effectively.

Identifying a Frozen AC Unit

The first step is to identify if your air conditioner has indeed frozen up. Signs of a frozen AC unit include a decrease in cooling efficiency with warm air instead of cold air coming out of the vents. The thermostat is not reading properly. Other clues can be ice formation on the AC outdoor unit, and a full drip pan below the HVAC system.

Why Does an AC Unit Freeze Up?

There are several reasons why an AC system might freeze up:

  1. Low Refrigerant Levels: If your air conditioning system is low on refrigerant, it can cause the unit’s evaporator coil to freeze up.
  2. Poor Airflow: If there’s not enough air flowing through your AC unit, it can cause the temperature of the coil to drop below freezing, leading to ice build-up and causing an air conditioner to freeze.
  3. Dirty Coils: Over time, dust and debris can accumulate on the coils, reducing their ability to absorb heat and leading to a frozen air conditioner.

Steps to Take When Your AC Freezes Up

So, what can you do when your AC unit is freezing?  Here are some steps to follow to prevent a frozen air conditioner.

  1. Turn Off Your AC Unit: The first step is to turn off your AC unit to prevent further damage. This will also allow the ice on the unit to thaw.
  2. Check the Air Filters: If your AC filters are dirty, they can restrict airflow and cause your AC unit to freeze. Check your air filters and replace them if necessary.
  3. Inspect the Coils: You may have frozen coils. If your coils are dirty, they can cause your AC unit to freeze. If you notice any dirt or debris on the coils, you’ll need to have them cleaned.
  4. Check the Refrigerant Levels: Low refrigerant levels can cause your AC unit to freeze. If you suspect that your refrigerant levels are low, you’ll need to call an HVAC professional to check and refill it.

Preventing Future Freeze-Ups

To prevent your HVAC system from freezing up in the future, regular maintenance is key. This includes regularly replacing your air filters, having your coils cleaned, and having your refrigerant levels checked.

When to Call a Professional

While these steps can help you address a frozen AC unit, it’s essential to know when to call an HVAC technician. If your AC unit frequently freezes up, or if you’re unable to identify the cause of the problem, it’s time to call a professional. At Bob’s Repair, our team of experts can help diagnose and fix the problem, ensuring your AC unit is running efficiently and keeping the cool air running.

In conclusion, knowing what to do when your air conditioner freezes up can help you address the problem effectively and prevent future occurrences. Regular maintenance and prompt action at the first sign of trouble can help keep your AC unit running smoothly all summer long.