How in the heck can you stay under 1KW a day? Do you not have a refrigerator?I’m not sure why everyone is wiling to spend a lot of up front costs for an AIO, and then treating it as a generator. It’s better to consider it a UPS. On my 3 bedroom home, a 3000 watt generator has satisfied my needs during multi week power outages in New Hampshire. No fun filling jerry jugs!
A 3000W AIO will serve all my 120v needs and then some. I run gas appliances for oven and dryer so I have limited 240v needs. Their electrical requirements can run off the AIO too.
All of my 120v circuits are being served by my 3000W LVM. All critical load breakers were relocated from the main panel to a new $80 Siemans subpanel. With a family of 5, I am usually under 1 KW throughout the day.
As long as you monitor your usage, the default settings should satisfy your needs. When / If I need 240v, I’ll purchase a parallel unit to grow. In the end, AIO’s should be a whole house UPS where one should not have to overthink the maintenance.
Edit. Sorry, I read that as 1KWhr!