What is what to do when your air conditioner freezes up?

When your air conditioner freezes up, it means ice has formed on the evaporator coil, usually due to reduced airflow or low refrigerant. Here's what to do:

1. Turn off the Air Conditioner: This is the most important first step. Switch off your AC unit at the thermostat and the breaker to allow the ice to melt. For the importance of this step: https://www.wikiwhat.page/kavramlar/Turning%20off%20the%20Air%20Conditioner

2. Turn the Fan On: Set your thermostat to "Fan On" (not "Auto"). This circulates warm air over the frozen coil, speeding up the melting process. This step helps with https://www.wikiwhat.page/kavramlar/Circulating%20Warm%20Air.

3. Identify the Cause: While the ice melts (which can take several hours), investigate the potential causes:

   • Dirty Air Filter: A clogged air filter is the most common cause. Replace it with a clean one. A clean air filter's purpose: https://www.wikiwhat.page/kavramlar/Clean%20Air%20Filter
   • Blocked Vents: Make sure that air vents are open and unobstructed. Closed vents restrict airflow. Here's why open vents are important: https://www.wikiwhat.page/kavramlar/Open%20Air%20Vents
   • Blocked Outdoor Unit: Check the outdoor condenser unit and clear away any debris like leaves, grass clippings, or bushes blocking airflow. Keep your outdoor unit clear: https://www.wikiwhat.page/kavramlar/Clear%20Outdoor%20Unit
   • Refrigerant Leak: If the problem persists after addressing airflow issues, it could indicate a refrigerant leak. This requires a professional.

4. Allow to Thaw Completely: Be patient and let the ice melt completely. This can take several hours or even a full day, depending on the severity of the freeze.

5. Restart the AC: Once the ice has melted and you've addressed the potential cause (like replacing the air filter), turn the AC back on. Monitor it closely.

6. Call a Professional: If the AC freezes up again quickly, or if you suspect a refrigerant leak or other more serious problem, contact a qualified HVAC technician. They can diagnose and repair the underlying issue. Don't hesitate to seek professional help: https://www.wikiwhat.page/kavramlar/Professional%20HVAC%20Technician