In my home in the southern US, I'd need ~13 canisters per day due to cooling needs at my current consumption. I could probably ration them and use ~5 per day in case a hurricane hits, and then I'd have about 2ish days of emergency power, but who wants to store explosive gas in their home? I've bought propane cylinders at the store and gotten leaky ones. At least propane doesn't combust unless it hits an ignition source.