<prompt> Human: Im wondering if anyone on here has knowledge on the method of using a heloc as a checking account to keep the interest rate payments low because youre putting all your income towards that balance every month and use that line of credit to make large payments towards your mortgage to pay it off faster and obviously pay less in interest. I know there has been some skepticism on this topic on past posts but the concept seems to make sense to me, and most of the skepticism seemed to come from people who didnt take time to fully understand the method. I understand the risk of a variable interest rate with a heloc but supposedly you can find ones where you can lock in a rate. I also understand that you need to have a positive cash flow for this to work. Im looking for possible reasons why this might not work or people who have done this themselves and how it worked out for them. Im also not looking for the whole it doesnt make sense to take out a higher interest rate loan to pay off another loan argument because that is over simplifying it.  <response>: it doesnt make sense to take out a higher interest rate loan to pay off another loan 