The colder temperatures that are becoming more common as we get deeper into December may have you thinking about giving your furnace a tune-up. If your furnace quits working, you will need a reliable contractor, and fast. The Better Business Bureau has some tips to keep you from getting ripped off.

Investigator Don O’Brien tells The Big Z you should research a company's background and licensing, review warranty coverage, and compare prices and service packages.

Click here for O'Brien's comments

Most complaints concern billing, collections, warranties, and satisfaction with repairs. O’Brien says one way to determine whether a contractor is reliable is by looking at their longevity. He says the ones that have been in business for decades tend to be the ones that have a favorable track record.

(Copyright WBGZ Radio /