Warning: Working with refrigerants can be dangerous, make sure you know you can identify the low pressure side of your AC system. If you are not sure, it may be worth having someone else take a look. Always make sure you wear gloves and cover exposed skin, and wear safety glasses.

This is the product I used in the video:
https://www.walmart.com/ip/EZ-Chill-R...

Here is a similar product that you can find on Amazon
https://amzn.to/3PduxHE (affiliate link)