LOS ANGELES (AP) — Mortgage rates haven’t been this attractive in more than a year, good news for homeowners eager to refinance.

Many homeowners have already jumped at the opportunity to lower their monthly payment, spurring a surge in mortgage refinancing applications.

And that was before the average rate on a 30-year mortgage fell this week to 6.2%, according to mortgage buyer Freddie Mac. As recently as May, the rate averaged 7.22%. It’s now at the lowest level in 19 months.

The rush to refinance makes sense, as even a slight drop in mortgage rates can translate into significant savings over the long run. For a home with the median U.S. listing price of $422,600, a buyer who makes a 20% down payment at this week's average mortgage rate would save $360 a month compared to what it would have cost to buy the same home in October, when the average rate hit a 23-year high of 7.79%.

Still, there’s more to consider than the mortgage rate. It can cost thousands of dollars to refinance, and not all the fees can always be rolled into the new loan.

Breaking even on the costs of refinancing may take months or years, depending on the difference between your current rate and your new rate. So refinancing may not make sense if you’re planning to sell the home before that happens.

Here are some key factors to consider as you weigh whether now is the right time to refinance your home loan:

Are rates attractive enough to make refinancing worthwhile?

While mortgage rates have come down, the average rate on a 30-year home loan is still more than double what it was just three years ago.

Some 86% of all outstanding home mortgages have an interest rate below 6%, and more than three quarters have a rate 5% or lower, according to Realtor.com. If your mortgage rate falls within that range, you’ll want to make sure you can refinance to a significantly lower rate than you have now.

One rule of thumb to consider is whether you can reduce your rate by half to three-quarters of a percentage point, said Greg McBride, chief financial analyst at Bankrate.

“That’s when it’s time to start thinking about it,” he said.

Someone with a 30-year mortgage at 7.5% or 8%, for example, should be looking for rates to be in the low 6% range.

Homeowners with an adjustable-rate mortgage, or ARM, that’s set to adjust to a higher rate may also want to consider refinancing while rates head lower.

How long will it take you to break even on the costs of refinancing?

The break-even period on a mortgage refinance will be shorter the more significant your savings are. For example, if you’re refinancing from a rate of 8% down to 6%, the break-even period is going to be far shorter than if you refinance from 6.75% down to 6.25%.