NO cost re-fi? Is there really such a thing? Aren’t you always paying something? If there truly is a no-cost one, please share your info.
Also, doesn’t it really depend on how much you owe? .25% on 50K is a whole lot different than on 500K. If your loan is a relatively low amount it would take more percentage difference to make up for the cost of the re-fi (which I’ve always thought was around 3K in total costs), especially if you took the money you would have spent to re-fi and applied it to the principal of the loan instead.