We had a six hour power outage last month during unusual for us, 14*F temperature and winds up to 55 mph.
Our Firman inverter dual fuel 2900 / 2600 W running on LPG did very well, and was easily able to power our needs.
IE. Running two refrigerators, three freezers, fireplace insert fan, kitchen lights, toaster, coffee maker, modem, router, Wi-Fi, couple of computers etc.
Obviously you need to pay some attention and not put toaster and coffeemaker on together at the same time while everything else is on.
It certainly is a big compromise and does not compete with a large full house generator, but it seems to work fine for us, since we do not get many power outages and usually our winters are pretty mild.
Based on my observations, it should run 24 hours on a 30 lbs propane bottle.
PS.
I have 8 kW low Rpm noisy Diesel generator in case of extended outage, but am reluctant to use it.
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