Plans for this heater now available on the Permies Digital Marketplace!
Cabin 8" RMHeater - compact 8" diameter rocket mass heater, 3.5' x 9' footprint on concrete slab floor.
As-built drawings including plan, elevations, cross-section, and brick-by-brick layout for critical combustion areas. Builder's notes describe materials and tools, how to configure a removable barrel, attach wooden seat & tile mantlepiece. Optional decorative and functional elements are also discussed including fieldstone facing, copper barrel cover, and air channels for protecting combustible walls.
The original installation heats a 840-sf cottage in alpine/high-desert climate near the Canadian border (snow Oct to April) on about one to 1.5 cords of wood per winter.
PDF, 18 pages, 8.5" by 11", color illustrations (prints fine in B&W too). File size about 1 MB. (This is the 3rd updated version, with 4 additional pages compared to the original.)