The honest limitation: if your garage in Oatfield has non-standard header clearance from the original 1976 framing, a stock opener rail kit sometimes won't clear the door track without an extension kit, and those aren't something we carry on the truck for every bracket size. That turns a half-day job into a return trip once the part's in, and we'd rather tell you that at the estimate than discover it mid-install.
The other complication is less about the opener and more about the door it's bolted to. With 66,619 owner-occupied houses across a service area built mostly through the 1980s and 90s, we see a lot of springs and cables that are original or close to it. If yours is one of them, we'll flag it before the opener goes in - a new motor on a spring that's about to fail just means a second service call.
We don't do commercial door openers or anything outside residential sizing, and we won't quote a job sight unseen if the garage has obvious structural issues with the header. Those get a look first.