Collection: Rheem Commercial Gas Water Heaters

Heavy-Duty gas models meet or exceed current ASHRAE standards for efficiency and stand-by loss. Heavy-Duty gas models are designed and certified to ANSI Z21.10.3 and are independently tested by CSA and/or UL. Sanitation approval is certified by UL. All ASME models are tested and certified by National Board authorized representative on-site at Rheem's own facility. Low NOx models are available for California and Texas. Heavy-Duty gas models meet all federal and state requirements and are listed as required in many state and local plumbing codes.

Light-Duty gas models meet or exceed current ASHRAE standards for efficiency and stand-by loss. Light-Duty gas models are designed and certified to ANSI Z21.10.1 and are independently tested by CSA.  Low NOx models are available for California and Texas.