I am a renter but in the process of buying the house off my aunt. She told me I could install a pellet stove but for the meantime she doesn't want a big hole drilled through the wall. My thoughts were to remove a window and box it in like a wall and run the pipe through a thimble that way, however will that pass code to keep the insurance guys happy until my name is on the deed? I have no other way to install it until the house is mine. Probally won't be signing papers until the first of the year and not looking forward to burning straight oil. House is 1860 sq ft ranch, stove be about central in the house and stove is Englander 25.