Bryan Boiler's Compliance+® hot water and steam boilers in DR, AB, RV and RW Series are available as “LX” type with NOx level of sub 30 ppm gas and reduced oil NOx as standard. Models that meet stricter emissions levels down to 9 ppm also are available. Sizes range from 350 mbh to 21,000 mbh (8 bhp to 500 bhp).

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