Hello, If you're going to do that be aware that the nasty stuff in old oil will make your entire house smell like a stinkin', filthy garage if the hardware isn't perfect. I'm not trying to be your mother or anything; it's just that I've seen it done badly twice and the horrible smell lingered. Also, when you're researching your designs etc., see if it's legal. Just so you know. Since it's easy to locate a kerosene heater in a suburb by smell. They can just as easily zero in on a waste oil heater; if they want to-if a neighbor complained. I can hear it now, "You're poisoning my baby!" Kira