When choosing a new garage door opener, the first consideration is the type of drive system used by the opener. There are traditionally three different types of garage door opener drives: chain drive, belt drive, and screw drive. There is also a new type of garage door opener called a jack shaft.
Chain drive systems are the least expensive type of opener and use a long chain similar to a bicycle chain to operate the door. Chain drive systems are noiser than other types of garage door openers which can be a concern if there is living space over the garage. Also, the chain needs to be lubricated periodically. They are otherwise a reliable, economical design and can provide excellent service for years.
Screw drive systems use a long threaded steel rod to open the door. The drive motor spins the threaded rod which moves the lifting mechanism along the rod to open and close the door. This is a very powerful, sturdy design, but it is the slowest type of opener. If speedy opening and closing is important to you, consider a different design. Screw dive garage door openers have fewer moving parts than other types and need little maintenance other than occasionally lubricating the drive screw.
Belt drive systems use a long rubber belt to open and close the door. These are the quietest and most expensive type of garage door opener. These openers are usually higher end models and have advanced features. They need a moderate amount of maintenance, but they are typically well built and provide great service for years.
A jack shaft is a newer type of design that works well when the opener cannot be mounted overhead. A jack shaft opener mounts next to the garage door instead of on the ceiling.
