Well I think after 17yrs I get it. Stove has been cold for at least 10days now. Its been in the mid 70s most days. House has remained in the mid 70s also but the basement is freezing. It stays in the mid 60s down there even with these warm days. So basically I'm asking the stove to do double duty down there. Its been running with a 10 degree delta. It will feel good in a couple months though. We spend alot of time in the basement so heat down there will always be a must. I'll be curious to see what a stove upstairs next winter can do in a drywall environment over a concrete one.