How to replace your furnace

Don’t worry about brand

Carrier has about a third of the market share for furnaces. Other top brands include Trane, Lennox, American Standard, Rheem and Bryant.

Which one is best?

Consumer Reports studied furnaces and found all the leading brands to be similar in reliability. CR also says you might not want to choose the latest and greatest model because it hasn’t proven its reliability. It found the main reason for furnace failure was inadequate maintenance or improper installation.

A good furnace will come with a manufacturer’s warranty of five to 10 years for parts. Some will include labor up to 10 years. Expect a longer warranty on high-efficiency models.

Prices of major name-brand furnaces run from $2,300 to $3,000 on average, according to Consumer Reports.

Our experts say that for a 2,100-square-foot home, you can expect to pay $3,000 to $4,000, including installation, taxes and permits, for a new 90,000 BTU furnace with 90% efficiency.

However, for a small apartment or condo, the furnace might cost as little as $350 to $800.