The AO Smith BTH is a high efficiency commercial natural gas water heater engineered to deliver significant energy savings through improved heat exchanger design and precise combustion control. With a higher thermal efficiency rating than standard models, the BTH reduces operating costs over the life of the unit while providing the fast recovery rates required for demanding commercial applications. Available in multiple BTU input and storage gallon configurations to fit a wide range of facility needs.

The Rheem GHE is a high efficiency commercial natural gas water heater designed to reduce gas consumption and operating costs for large commercial and institutional facilities. With a higher thermal efficiency rating than standard Rheem gas models, the GHE utilizes advanced heat exchanger technology to extract more usable heat from every cubic foot of natural gas consumed. The GHE is well-suited for facilities seeking to meet ASHRAE 90.1 or local energy code efficiency requirements.