Before you need it, according to Mary Beth Breckenridge of kansascity.com. That way, you avoid a rushed decision and can take the time to find a model that’s not only energy-efficient, it also makes economic sense.
Do I need a new one? What should I buy? What can I expect from the contractor? Breckenridge answers these questions and more in her article, “Replacing Furnaces Can Save you Money” here.
