Maybe you’re interested in adding a deck to your house. Or maybe you want to help pay for your daughter’s wedding. If you’re a homeowner looking to borrow money, a HELOC might be a good option for you. So what is a home equity line of credit? In short, a HELOC is a revolving line of credit you can access by borrowing against the equity in your home. (Equity is the value of your house minus what you owe on it.) You can use these low-interest loans for just about anything, and approached correctly, a HELOC can be a smart way to borrow money: Here’s what you need to know about this kind of loan.