https://www.amazon.com/WJM-Filter-Replacement-Activated-Compatible/dp/B07TZ5B9TQ/ref=sr_1_18?crid=3MWCQZS2URLKS&keywords=tesla+filter&qid=1657036949&sprefix=tesla+filte%2Caps%2C108&sr=8-18
~$20 and about 30minutes of your time