Fix your window ac failing to cool: a step-by-step troubleshooting guide

If your window air conditioner is not cooling, don’t despair. There are a few simple things you can check before calling a repairman.

Troubleshooting a Window Air Conditioner That’s Not Cooling

1. Check the power. Make sure that the air conditioner is plugged in and that the power switch is turned on.
2. Check the thermostat. The thermostat may be set too high. Adjust the thermostat to a cooler setting and see if the air conditioner starts cooling.
3. Clean the air filter. A dirty air filter can restrict airflow and prevent the air conditioner from cooling properly. Remove the air filter and clean it with soap and water.
4. Clean the condenser coils. The condenser coils are located on the back of the air conditioner. They can become clogged with dirt and dust, which can reduce the air conditioner’s efficiency. Clean the condenser coils with a vacuum cleaner or a brush.
5. Check the refrigerant levels. Low refrigerant levels can cause the air conditioner to stop cooling. If you suspect that your air conditioner is low on refrigerant, you will need to call a qualified technician to add more refrigerant.
6. Inspect the compressor. The compressor is the heart of the air conditioner. If the compressor is not working, the air conditioner will not be able to cool. Listen for the compressor to turn on when you turn on the air conditioner. If you don’t hear the compressor turn on, you may need to call a qualified technician to repair or replace the compressor.
7. Check the electrical connections. Loose or damaged electrical connections can prevent the air conditioner from working properly. Inspect the electrical connections and tighten any loose wires. If you find any damaged wires, you will need to call a qualified electrician to repair or replace them.

The Bottom Line: How to Keep Your Window Air Conditioner Running Smoothly

By following these simple tips, you can keep your window air conditioner running smoothly and efficiently all summer long. If you are unable to fix the problem yourself, you should call a qualified technician to diagnose and repair the problem.

What People Want to Know

Q: Why is my window air conditioner not cooling?

A: There are several reasons why your window air conditioner may not be cooling. The most common causes include:

• A dirty air filter
• Clogged condenser coils
• Low refrigerant levels
• A faulty compressor
• Loose or damaged electrical connections

Q: How can I clean the air filter in my window air conditioner?

A: To clean the air filter in your window air conditioner, simply remove the filter from the unit and wash it with soap and water. Allow the filter to dry completely before reinstalling it.

Q: How can I clean the condenser coils in my window air conditioner?

A: To clean the condenser coils in your window air conditioner, use a vacuum cleaner or a brush to remove any dirt and dust. Be careful not to damage the coils.

Q: How can I check the refrigerant levels in my window air conditioner?

A: To check the refrigerant levels in your window air conditioner, you will need a refrigerant gauge. Attach the gauge to the refrigerant line and read the pressure. If the pressure is low, you will need to call a qualified technician to add more refrigerant.

Q: How can I troubleshoot a faulty compressor in my window air conditioner?

A: To troubleshoot a faulty compressor in your window air conditioner, listen for the compressor to turn on when you turn on the air conditioner. If you don’t hear the compressor turn on, you may need to call a qualified technician to repair or replace the compressor.

Q: How can I check the electrical connections in my window air conditioner?

A: To check the electrical connections in your window air conditioner, inspect the connections and tighten any loose wires. If you find any damaged wires, you will need to call a qualified electrician to repair or replace them.