I have been offered a one owner Earth Stove, probably a T-150C but not sure. Owner is remote from stove and has manual T150C, T100C. She gives this information also: Emissions Rate 4.10, Heat Output 6,500-35,300, Efficiency 72, Type Catalytic. She inherited Mothers home with stove. From all indications, it has been well kept, in one location. I am not sure about maintenance. It does have crack in glass. Can anyone here tell me about this stove?