Generac and Kohler are the same units. One of them makes it for the other company. I did not go with the whole house unit and saved $4K (about 5 years ago).
We have a well, furnace and about 3/4 of our 2400 sq. foot home on the generator. 2 fridges and a freezer included. It is a Generac 10kW unit and we have no issues at all.
Be advised, - a service contract is not needed. The installer wants $300+ for a yearly oil change and plugs/air filter. Parts on amazon run around $30 plus 1.6 quarts of synthetic oil.
Unless something has changed REAL lately, this is not true. I have a Generac and my buddy has a Kohler and there is NOTHING even similar. Kohler has a better following from a reliability perspective, while Generac is the sales leader mostly because they do EVERYTHING on the total cheap. I have a history with Generac and their 'cheapness' with failure of units.
