Posted: 7/18/2012 10:08:31 AM EDT
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I know it's the same company, the Chamberlain is what the big box stores carry with a multiple piece rail (cost less $) vs Liftmaster which is professional installers carry with a 1-piece rail (cost more $)- but is it worth it? I'm looking at either the Liftmaster 8550 Elite series with battery back-up or Chamberlain 930EV with battery back-up eta: i want the Jackshaft, but it's over $700 installed with similar accessories and they need to replace my torque bar, because I have the Wayne-Dalton with the spring built inside the bar, extra $200+ |
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Don't know about Liftmaster, but the Chamberlain I installed last year absolutely kicks ass! I can barely hear it when I'm in the garage. Once I'm inside, I can't hear it at all. Plus, it has a battery back-up. I had a Genie screw drive which is a horrid device.
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I've got a screw drive liftmaster and a Wayne Dalton door. It's always kind of been a PITA during the winter when it gets really cold. They came out and replaced the whole screw/track under warranty and that helped, but I still had to adjust the torque settings once it got good and cold out. Too much safety bullshit. I want it to be able to crack walnuts when it hits the floor.  
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Quoted:
I've got a screw drive liftmaster and a Wayne Dalton door. It's always kind of been a PITA during the winter when it gets really cold. They came out and replaced the whole screw/track under warranty and that helped, but I still had to adjust the torque settings once it got good and cold out. Too much safety bullshit. I want it to be able to crack walnuts when it hits the floor. Screw drives are a stupid design. Go belt and never look back. Saftey features are fine with me so long as they work right. |
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Quoted: I've got a screw drive liftmaster and a Wayne Dalton door. It's always kind of been a PITA during the winter when it gets really cold. They came out and replaced the whole screw/track under warranty and that helped, but I still had to adjust the torque settings once it got good and cold out. Too much safety bullshit. I want it to be able to crack walnuts when it hits the floor. currently i have the WD idrive which is built-into the torsion bar - the concept is terrific, but quality and execution is horrible, i bypassed the eye sensors  |