[MT930]

20KVA should run the important stuff

Generac units are pretty nice natural gas is the way to go. If you don't have NG go propane.

They are fairly quiet.

Standby switch and weekly auto start are nice to have, keeps the unit battery charged and the engine lubed.

I have an 10KVA Kohler engined Miller Trailblazer It's saved my bacon a few times.
I bought it for power on job sites.

We've have had 12 Hour stints on the genny.

Come up with a priority circuit list. Don't overload it

AC is a big draw

Example

1.Septic Pump
2.Furnace Fan
3.Well
4.Refrigerator
5.Freezer
6.Bed room lights
7.Master Bath
8.Wall Outlets kitchen
9.One garage door operator
10.Computer