Well,I finally got my Harman XXV,and so far,no issues.I'm heating a 1700sf home with an open floor plan on the first floor,and three rooms and a bath on the second.The stove is heating the entire house,and maintaining 68*-70* with no problem.I learned a lot from this site, and am very grateful.Hopefully as I learn and experience,I will be able help others in the future. Thanks,Anthony.