Greetings,
Chrisley, glad you asked about the compatible water filter. Make sure that you are using the HAF-QIN Samsung water filter.
Also, you can check the Samsung link below about replacing the Samsung water filter.
Here's the link: https://www.samsung.com/us/support/answer/ANS00060149/
If you have inquiries and need further assistance in the future, you may contact us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Once you contact us, you can provide this reference number 1145014384.
^Rainly