| Model | Application | Size | Recovery | Water Flow Rate & Pressure Drop |
| ABH299 | Gas Fired Water Heater | 299,000 btu – 2.4M btu | 360 – 600 gph (1363 – 2271 lph) | 16-1/2 gpm @ 23′ (62 lpm @ 7 m) |
| ABH399 | Gas Fired Water Heater | 399,000 btu – 3.2M btu | 466 – 776 gph (1764 – 2937 lph) | 26 gpm @ 20′ (100 lpm @ 6 m) |
| ABH599 | Gas Fired Water Heater | 599,000 btu – 5M btu | 734 – 1223 gph (2778 – 4629 lph) | 40 gpm @ 24′ (150 lpm @ 7m) |
ABH Gas Fired Water Heaters are provided as complete packaged water heating solutions inclusive of The Brain® Digital Recirculation Valve (DRV) for hot water system water temperature control. ABH assemblies are designed and built to meet the exact requirements of the installation site; all systems are shipped ready to set in place with minimal assembly
ABH deploys a multiple pass condensing technology so that energy and heat from the combustion process is fully optimized by the unit’s heat exchanger. This innovative design maximizes the condensing condition across a broader operational range than traditional water heating technologies to deliver operating efficiencies as high as 99.8%.
ABH combustion efficiency is maximized by a unique, patented cold-water injection system (CWIS) in the storage tank ensures that the cold or system return water entering the heat exchanger is at the lowest possible temperature.
