EKO DUO 95 hybrid boiler, 330K BTUEKO DUO 95 hybrid boiler, 330K BTU High output automatic self cleaning hybrid boiler for demanding hydronic systems, combining extended hopper capacity with the EKO DUO multi fuel combustion platform. Key Benefits Automatic self cleaning burner with rotary cast iron design for reliable solid fuel combustion Flexible multi fuel capability for coal, pellets, grains, and biomass up to 1 1 2", plus manual feeding for wood chips and peat briquette