I have an ~ 8 year old Harman XXV with a top vent (vents vertically about 15' straight up through roof) that is building creosote and I don't understand why.
The top vent adapter (that comes out the back and bends around the top of the stove) gets filled with ash so I clean it. Which I did again the past off season.
Years past - I could tell if it needed a mid-season cleaning because I would start to get a creosote buildup.
This year - only a month into burning, we started to get creosote buildup. I thought this was odd as I usually often make it a whole year with out having to clean the top vent adapter. I ignored it for a week and we had a chimney fire last week at 2am.
I cleaned adapter and entire chimney (which was pretty clean), put it all back together and guess what: I'm getting creosote buildup again.
The exhaust fan which I replaced in 2018 is pulling very well (strong suction in fire box). No apparent air leaks around door or around adapter.
I do burn cheap hardwood pellets from Tractor Supply. Harman suggests softwood, but I've been burning hardwood for years... Could this be bad pellets? Or is there something else that I'm missing?
I guess I should stop running the stove until I can get it to burn clean.
EDIT: adding that holes in burn pot are clear. I run in stove mode. Feed rate set around 3.5. Never run it wide open (maybe I should).
The top vent adapter (that comes out the back and bends around the top of the stove) gets filled with ash so I clean it. Which I did again the past off season.
Years past - I could tell if it needed a mid-season cleaning because I would start to get a creosote buildup.
This year - only a month into burning, we started to get creosote buildup. I thought this was odd as I usually often make it a whole year with out having to clean the top vent adapter. I ignored it for a week and we had a chimney fire last week at 2am.
I cleaned adapter and entire chimney (which was pretty clean), put it all back together and guess what: I'm getting creosote buildup again.
The exhaust fan which I replaced in 2018 is pulling very well (strong suction in fire box). No apparent air leaks around door or around adapter.
I do burn cheap hardwood pellets from Tractor Supply. Harman suggests softwood, but I've been burning hardwood for years... Could this be bad pellets? Or is there something else that I'm missing?
I guess I should stop running the stove until I can get it to burn clean.
EDIT: adding that holes in burn pot are clear. I run in stove mode. Feed rate set around 3.5. Never run it wide open (maybe I should).
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