Product review (4 stars): Best range hood I've ever seen, not the easiest thing to install
Once installed I really like this hood.  Clean lines, easy controls, simple, good lights, with a powerful fan that's fairly quiet.

However installing it was tough, partly because my old house fought me, but this unit pretty much needs to be disassembled and properly configured before being installed.  Also at 42 inches wide you'll need a buddy or a motorcycle lift to install it.  I did it solo but it was a frustrating experience.

I'm not sure how Broan could improve on the install process, it's the nature of a 42 inch range hood.