The new product is engineered and manufactured with reliability in mind and completes a state-of-the-art reliability validation, which includes environmental testing of sub-assemblies, stress testing, and simulated testing of appliances. 

Residential NRCB unit expands Noritz’s line of combination boilers with enhanced heating capabilities, durable 316L stainless steel heat exchangers, and other installer- and user-friendly features.

Available in seven sizes from 500 to 2000 MBH, natural or LP gas, 85 percent thermal efficiency, up to 4:1 stage firing, and qualify as low NOx emission.