Hi. I'm new to this forum. I am having issues with my Tarm not able to heat the boiler to a it's normal temperature of 180º. This unit is over 16 years old and has served me well. It seems that the draft is the problem. I cleaned the stove recently (like I do approximately every 6 months), and checked the chimney (clear). I thought that my draft fan was weak, and had it replaced (changed from 24v. to 120v.) After a $485.00 bill, it doesn't seem to be much better. I talked to Tarm tech, and found out that the ceramic fire box typically needs to be replaced after a time. This has not been done on my unit. It may be that a number of issues have come together at the same time: 1. I may have a wood moisture problem. I did not get enough wood in this past summer due to a death in the family, and ended up buying some to get through. I did check the moisture content of 5 or 6 pieces and found them to be anywhere between 14 - 25% 2. ceramic needs replacement? Typical replacement is 7-12 years 3. draft fan weak (fixed) Of course the first concern is to try and get it working again (I'm burning oil) The bigger question is: is it worth replacing the ceramic (probably $1000.00 w/ labor) and then finding out that boiler is thin and starts to leak due to age. Is this replacement something I could do myself? Anyone with experience similar to this, comments? Thanks in advance.