Skip to Contents

Find Useful Tips & Tricks with LG

Find help information for your LG product

Learn about product installation, maintenance, and troubleshooting using our search options.

Hissing and gurgling sounds in Window AC

  • Others
  • Others
  • Operation
  • Air Conditioning Units
  • Last Updated 27/05/2014

Why does the unit make hissing and gurgling sounds?


The refrigerant flowing inside the air conditioner causes a soft hissing or gurgling sound when the air conditioner is turned on or off.

These are normal operational noises. 

During the first 2-3 minutes of operation, the air conditioner may be louder due to the compressor starting up.

Article Feedback

1. Overall, how satisfied were you with the usefulness of this article?
1.1 Why did the article not resolve your issue?

Characters left : 500 / 500