New to refinacing to HELOC: beta please?

[Chloe Dawn Murphy]

I just read an e-book called Replace Your Mortgage by Michael Lush and David Dutton. It basically presents the home equity line of credit as replacement for your personal or business bank account. They say it works as long as you earn more than you spend. They have me hooked to the idea, but before plunging into a semi strange finance commitment I would love some beta on the topic.

I am at the refinance stage of my BRRR, I plan on renting it out for a few more years. I plan on selling it in 5-8 years. What does a HELOC look like as a rental, is it only smart to refinance your personal long term house into a heloc, or is this a tool I can use for all my future investments?

Anyone have any book recommendations on the subject?