Need help with a question, please. Currently I have a Warnock Hersey pellet stove in my house and it was made in 1998, just recently purchased a Summers Heat 55-SHP10L. My current stove is not connected to outside air and works fine. The new stove says that it is mandatory to have the outside air. From what I have read is that the outside air is mandatory because of the new houses that are air tight. My house was built about 35 years ago and is no where near as air tight as it needs to be. Question is will my current stove work with just the air in the house or am I going to have to drill through my tile to put in the outside air kit????