Two primary drive systems power residential garage door openers: belt and chain. Chain drives utilize a metal chain, similar to a bicycle chain, to move the trolley that pulls the door open or closed. Belt drives accomplish the same task using a reinforced rubber belt. This fundamental difference impacts the operational characteristics of each system.
Selecting the right drive mechanism significantly impacts the long-term homeowner experience. A quieter, smoother operation is often a priority, especially for garages attached to or located beneath living spaces. Durability and maintenance requirements are other key factors influencing this decision. Historically, chain drives were the standard due to their lower cost and robust construction. However, advancements in materials science have made belt drives increasingly popular, offering a compelling alternative for those prioritizing quiet performance.