I purchased a Generac 20KW unit in 10/2011. The unit was installed by an authorized Generac installer. This generator has failed three times as of this date (7/25/13)
The first failure self corrected and the installer could not find the problem.(code: under voltage )
Second failure was during the height of Hurricane Sandy (under voltage) It took the Generac repair agency 2 months to fix the problem. Essentially, a trial and error situation.
The third failure occurred two weeks ago, again "under voltage"
Calls to Generac have gone unanswered or taken by receptionist who will send my complaint to an agent. Still waiting.
This is the worst company I have ever had to deal with. I'm 70 years old so I have been around a while.
Do not buy one of these generator. Be careful, Generac also manufactures generators under different names.
Monetary Loss: $5000.