I do agree its not bad if your on a weekly schedule, was really pi***d yesterday to find after only 5 days burning the airbox was stuffed with creosote and the horizontal tubes were HALF plugged. My wood is not unreasonable either ranging from 22 to 27 percent. They run ALOT better when its cold and overnite lows arent 35.
Today is another day
When burning overly moist wood, or when water return temps are too low; THERE WILL BE CREOSOTE IN THE FIREBOX.....
In my experience with gasification boilers: It is critical to have water return temps at 140 degrees minimum and wood moisture content below 20%. If not, the wood fired boiler becomes a high maintenance appliance.
My experience is with an insulated shed as the boiler room and includes 1,000 gallons of storage. With a lower than 20% moisture content (I recommend 16 to 20 percent) and return water temps at the minimum of 140 degrees, cleaning is a minor issue and easily accomplished.
These two critical elements can be met by planning two years in advance with your firewood chores and by installing a thermic valve for boiler return temperature control.
There is a forum at hearth dot com called the boiler room where there are members with years of experience in these matters. Gasification wood boilers are different than a typical OWB and require different burn methods. Getting to know the appliance you have is instrumental in achieving maximum efficiency. Using a gasifier can cut your wood consumption by as much as 45% depending on system variables and proper seasoning of the fuel.