Been looking at these. They are P&M's replacement for the older ML series. They aren't gassers, but they have multipass heat exchangers. The BL's are also at a lower price point. Anybody know any thing about them?
http://www.portageandmainboilers.com/#!pm-ultimizer-series/c5zz
http://www.portageandmainboilers.com/#!pm-ultimizer-series/c5zz
