needed for in-house; only needs to heat the average room. should i look at petroleum or kerosene? any ideas (yeah, this is y2k related) about size or brand? i live in Northeast PA; we have gas heat and i just want to be prepared. got the long-duration candles; got the lantern and flashlights and some extra food and water (may buy some iodine or purification tablets after visiting this site); but want to be prepared in case the cold becomes an enemy when the clock turns over.