As usual you totally missed my point. My point is that just because you and some guy from Montana aren't huge fans of Generac generators doesn't make them bad generators. More bloviation from termite.
I DID point out that "Generac" just by itself - isn't the whole picture. Had you paid attention.
Generac distributes a LOT of "branded" goods.
PRODUCES far fewer. Bid-package engineering thing.
The likelihood of your 17.5 kVA. fifteen years in use .. and the OP's one even being related, let alone identical, is far from 100%, even if his one is not new, either.
Their full-sized residential units, 35 kVA and up - are better-built, too.
Have to be.
Folks with bigger homes who buy those have spent more money, are more likely to have used the services of contractors, and usually have good Lawsters.
Even so, NO "Generac" is in the Big Leagues as top tier gen sets go.