I picked up one of these from Sams Club back when we lost power during an ice storm a few years ago.
I was easily able to run my fuel oil furnace, refrigerator, several lights, TV/Satellite and it didn’t even break a sweat. Having 14 hours of run time on one tank is also a plus.
I’m pretty sure if I wired my breaker box with a cutover, it would probably run everything in the house...maybe minus the electric stove.