“For our reviews, we ask clients to bring in their mortgage statements and investment statements,” said the Ameriprise Financial Inc. financial adviser. “Since you can't control markets but can control what you save and spend, why not lock in a lower rate today and save more money for the future?”

Just last month, Ms. Cheng met with a 55-year-old client, a federal employee, who wanted to replace her 30-year 5.25% mortgage with a 15-year 3.25% mortgage so that she and her semiretired husband, a professor, could be almost debt-free once they stop working.

The couple owes $116,000 on the remaining 20 years of their mortgage, with a monthly principal and interest payment of $1,365. The refinancing not only would shorten the term of mortgage by five years but reduce monthly payments to $1,268.

“These clients have already been making extra principal payments, so if they continue, they can be fully paid off in 10 years,” Ms. Cheng said.

Given the Federal Reserve's decision last month to keep the federal funds rate in the 0% to 0.25% range at least until the end of 2014, many advisers think that replacing higher-cost debt — principally home mortgages and credit card balances — or paying it down faster, offers a savings opportunity that is more attractive than many investment returns.

In addition, advisers, worried about future inflation, feel that it's wise to lock in today's low rates.

“If you have a fixed-rate mortgage, you're happy if inflation goes up: The size of your debt gets smaller in real dollars,” said Christopher Van Slyke, an adviser with Trovena LLC. “If you have a variable-rate loan or a credit card, you're in big trouble.”