Got a house I'm not living in right now, and no electricity. Temps are forecast for the high 20's-low 30's for a few days. No heat since Sandy. I can't get down there every day to service a generator, so how long do I have between running the generator (and bringing the house to normal temp), assuming the house is reasonably well insulated? Any steps I should be taking to reduce chances of pipes freezing? Will just opening the taps with water supply off drain most of the pipes? What about toilets? Don't want to get too crazy with anti-freeze in the toilets because it's a septic system.