That certainly sounds optimistic ... but they sell "30 year" shingles in Florida too
Sometimes I think these warranties are written, based on the CEO's estimated retirement date.
"Sue the next guy"
What is the recourse on this limited warranty? (they are all "limited")
Do you get a new one free?, Is it a prorated price on a new collector? Does it cover labor? Permits?
If it is like a shingle warranty it is pretty much useless.