As a person in the deep south where summer temps are over 100F and RH is in the 80s, having a generator powered window unit in our smallest room is more necessary than even the fridge. Thankfully the window units only pull 400-500w or so, so even a small dual-fuel running propane would run all day on a 20lb tank.

This is a common enough occurrence in rural Louisiana, at least. And I think almost everyone I know has a 200gal or larger propane tank in their yard, specifically for multiday outages. My father-in-law doesn't have a single propane appliance, but he does have a 250gal tank, for his generac.

We don't we have a single 100lb tank, but that will run the little AC for 3 or 4 days.

During the last outage my neighbor had to leave his house because of the temperature. He had a generator running for days (off of the natural gas line) so I thought he was fine, but his old AC wouldn't start so he texted me as he was leaving to stay at a hotel.

This is important enough to me that I researched slow start AC units ~8 years ago when replacing my AC. I learned that almost any heat pump will do, so that's what I have.

In large areas of the US if your AC goes out during the summer you can be dead within a day or two. There's many deaths of elderly people annually when their AC failed and they didn't have the mobility to leave for a cooling center before they passed out.

https://hsph.harvard.edu/news/heat-waves-and-annual-death-ra...