Find a contractor who has experience working with your type of garage door. Most garage doors do not have an opener attached to them. However, many garage doors do come equipped with motorized garage door openers. Not all contractors are qualified to do repair work on the motors in these garage door openers. You should ask the contractor about his or her work experience before you make a hiring decision.

Have the contractor come out and give you an estimate for the work before you hire him or her. The contractor will have to look over your garage doors and assess what he or she believes the problem to be. At this point, the contractor will be able to provide you with an estimate of how much the repair work will cost you.

Look for online reviews of the contractor. Previous clients of the contractor may have gone online to talk about their experiences with the contractor. These experiences can be good or bad. They can also give you a lot of insight on how the contractor works, and whether he or she would be a good fit for your job.