Haven’t cleaned the outdoor wood boiler since just before or after New Years. Here’s some before and after pictures. Only took about 30 minutes to get her back in shape.
I just cleaned my OWB tonight as well, as you said, not a huge job but I put it off way to long. Mine only has 6 tubes though, what do you use to clean them?
There is a metal l shaped rod that fits perfectly in the horizontal tubes. I have a brush but it’s a tight fit when dirty so I only use that on the final cleaning of the season