Originally Posted By: chaosmagnet
My house is heated by a natural gas furnace. My plan, if the gas is still working and the power is out, involves wiring a pigtail in where the furnace’s cutoff switch is located, and using a large power bank backed up by a small generator. ...

Same plan here. Now that I have a little genny I can run many big fans to distribute heat or a small heater. I can also power an air compressor to help blow down the blue water lines if I have to; most homes have so many dips and doglegs in the piping that a gravity draindown won't cut it. I also keep enough RV antifreeze to protect all the traps.