I have recently installed a energy mate wood furnace that was given to me by a relative. The stove had been sitting idle for 10 years. Anyway the house I live in now is approx 1500sq feet. I have added a room 9ftx9ft ro accommodate the stove. I have 12ft of double wall flue that is 15ft from peak and a couple inches taller. The only place I had to put the New wood room is 20-25ft from existing gas furnace duct work. After installing furnace she worked great. Good draft and lots of heat. Like a idiot I had adjusted the fan limit switch and now its not heating properly. Right now around 15* outside and this may play a part in my heating issue. I have reset the limits switch to 90 off 150 on and high limit at factory setting 200. I have not changed wood type. I have been burning white oak that has been stacked for a little over a year. During the day the house temp is usually around 73-74 but at night with the stat set at 72* the house is 67*. Even the room the furnace is in the temp has dropped. I would think this furnace should keep the house at 100* if I wanted it to. Both blowers are working. Any ideas. Energy mate 7800 series.