Since power failures in the winter seems to be a common scenario so far, anybody know if there's a way to keep a natural gas furnace safely going without power? The fan wouldn't work, but at least it would be something. You could light it manually, and then with the battery-powered thermostat set high, would it keep fired up? I should know this. The worst/longest winter power outage we had, I was not at my home (big ice storm) and forget what we did, besides cooking in the fireplace. Thanks.
I looked at my own furnace a couple years ago and after the power enters it it goes to a relay for the fan and into a 24v transformer. It seems that all the control circuitry in it is 24v so it could easily be battery powered. I thought about maybe a smaller 24v secondary fan mounted below the main fan might get some airflow, then if you added in a duct valve or two you could run a while from battery.
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