I am posting this in a few forums to spark a conversation. I am installing a pellet insert. Quadrafire Santa Fe. House is 1400 sq ft, open floor plan. 75 years old with balloon insulation. I have lived in the house for 2 full winters with no cap or flue on the chimney it is drafty in the fireplace room. I also notice even though windows are brand new and the house is fully caulked, that I feel drafts on very cold, windy days. I cannot decide if I should install an Outside Air Kit. Have seen it debated before. My water heater is electric, and the oil furnace is in the basement and will hopefully NOT run this winter, so I am not worried about a house draft affecting that. I have no kitchen range exhaust as that is electric as well. The only exhaust is the bathroom and it vents directly into the attic for now. So that would be the biggest pull of air probably from the attic. Outside air for combustion sounds smart and practical but I am scared of pressure problems and spillage. I read a good article here but still cannot decide. http://www.woodheat.org/outdoorair/outdoorairmyth.htm Problem is I need to decide soon cause they will have to drill out the chimney to do it. He said to run it along side the exhaust in the chimney one would have to be much higher than the other and looked busted.