Does a high HELOC rate maxed out on the credit line, alongside a much lower first-mortgage rate, sound right?

A fully drawn HELOC priced up in the mid-teens is on the high end, and your low first-mortgage rate tells you nothing about whether the HELOC rate is fair. Two things to check before you do anything else. First, make sure you are reading the current rate and an old statement is not doing the talking. HELOC rates are almost always variable, tied to the prime rate plus a margin, and prime moves with the Fed. When short-term rates come down, your HELOC rate can come down with them, so a number you remember from a while back may already be stale. People quote rates they have not looked at in months all the time. Second, even at the correct rate, shop it. Your first mortgage and your HELOC are separate loans, priced separately, so a great fixed rate on the first tells you nothing about whether the line is competitive. If this is a balance you are carrying month to month, it is worth asking whether that rate can be improved, or whether there is a smarter way to handle the balance entirely. We are happy to look at the whole picture with you.