Residential garage door openers primarily utilize two types of drive mechanisms: belt and chain. Chain drive systems employ a metal chain similar to a bicycle chain to move the trolley that pulls the door open or closed. Belt drive systems operate similarly, but replace the metal chain with a reinforced rubber belt.
Choosing between these two drive systems significantly impacts the operational characteristics of a garage door. The selection influences factors such as noise level, maintenance requirements, and overall lifespan. While chain drives have historically been the standard due to their robust construction and affordability, advancements in materials technology have made belt drives an increasingly popular alternative, particularly for homeowners seeking quieter operation.