You need upwards of 7 or 8 KW genny to do those things and you’d still have to pick and choose.....if you want the whole house to run like normal you’re gonna need above 10KW i would think.....we have a small 2kw one that we use to save our refrigerator mostly but if the outage is in summer we can’t run all the window AC units.....and I have no way to power the furnace if it was in winter....if you