[greenthrow]

What nonsense. If you ha e a backup generator your power isn't out. Gas heat doesn't work with the power out. Why are you resorting to lies to push fossil fuels?

[WalterBright]

Backup generators are not usually large enough to power an electric furnace. But they'll power the fan for the gas heat just fine.

Source: I used a little gas generator many times to power the gas furnace when the electric grid was down.