Culled
Super-high efficiency fireplace Rumford Renaissance 1500. [http://renaissancefireplaces.com/en/rumford-1500-woodburning-fireplace] 0.68g of particulates resulting from burning 1kg of wood is > 99.9% burned. It's one of the highest on the EPA certified list. [https://www.epa.gov/burnwise/list-qualified-fireplaces-fireplace-retrofit-devices] ("Rumford" is traditionally the taller, higher efficiency design.)
Who thinks up this? (Not for my place, but still awesome!)
Q