20KW. It will do my whole house in the spring/fally/winter, but will not run all three AC units at once in the summer - just 2 of them.
Mine is LP and Natural Gas, which comes in handy. I took natural gas for granted, but after the floods out here washed away roads, pipelines and worse, many areas are without natural gas and might not have it for months and months. Portable LP tanks are a pain, but they are a good backup. Dual fuel generators are the way to go IMO.
I also have a 6.5K Honda in the box still waiting as a backup to the 20K. I have oil and a back-feed cord ready - I always have gas on hand. If either save my reef just once, they are worth every penny.
In 2002, after a terrible Ice Storm a 5,500 Generac saved my reef. I had to take gas out of my V10 ford fuel tank to keep it running for 3 days until the gas stations got power again. Lots of horror stories on the local board after 2 weeks of no power.