Garage door openers utilize different drive mechanisms to lift and lower the door. Two common types are those powered by belts and those by chains. A belt-driven system employs a rubber belt, while a chain-driven system uses a metal chain, similar to a bicycle chain, to move the trolley that pulls the door along its track.
Choosing the right drive mechanism significantly impacts the operational characteristics of a garage door. Quiet operation is a key benefit of belt-driven systems, making them ideal for homes with attached garages or living spaces above the garage. Chain drives, while typically more affordable and robust, tend to produce more noise. The historical prevalence of chain drives stems from their durability and cost-effectiveness, but advancements in materials and technology have made belt drives increasingly popular for those prioritizing quieter performance.