On Sep 5, 9:54*am, " Frank" x wrote:
2) Whats the dependability of Liftmasters in general? *Between screw
drive, chain drive & belt drive which is the best and most relieable?
I only have experience with screw drives.

I've replaced my Genies with the belt drive Liftmasters. I have four new
belt drive Liftmasters, one with battery backup. Quiet and smooth, one
remote controls three different units. I had chain, screw and belt drives
over the years on multiple properties. Chain drives are PIA, low end units
that needs constant adjustment and I wouldn't buy another one again. I never
had a screw mechanism broke, but my Genie belt broke after 17 years.
Installed a new belt and good for another 5 years before the motor burn out.

My old 1/2hp screw drive Genie seems stronger than my new 1/2hp Liftmaster
belt drive, but I still like the Liftmaster better. My other belt drive
Liftmaster with the battery backup is 3/4hp. Also have one screw drive
Liftmaster and its working well after 4 years.

I've got a pair of Chamerlain Whispermatics, chain drives. They are
very quiet, but I don't have a bedroom over them. One I use for a
single garage, the other pulls a two-stall door.
They were as easy as anything else to install, and still going fine
though it's only been 5 years or so.