Gas Storage Commercial Water Heater Manuals

426 models · 28 brands · Data updated October 7, 2026

Gas Storage models

Gas Storage Commercial Water Heaters
ModelBrandDescriptionCertified
ATX-199-*-1 A. O. Smith 119-gallon commercial gas storage water heater November 2021
BSS 130 2Polaris A. O. Smith 34-gallon commercial gas storage water heater November 2021
BTH 120* 3 A. O. Smith 60-gallon commercial gas storage water heater November 2021
BTH 150* 3 A. O. Smith 100-gallon commercial gas storage water heater November 2021
BTH 199* 3 A. O. Smith 100-gallon commercial gas storage water heater November 2021
BTH 250* 3 A. O. Smith 100-gallon commercial gas storage water heater November 2021
BTH 251* 3 A. O. Smith 119-gallon commercial gas storage water heater November 2021
BTH 300* 3 A. O. Smith 119-gallon commercial gas storage water heater November 2021
BTH 400* 3 A. O. Smith 119-gallon commercial gas storage water heater November 2021
BTH-100* 4 A. O. Smith 60-gallon commercial gas storage water heater August 2025
BTH-120* 4 A. O. Smith 60-gallon commercial gas storage water heater August 2025
BTH-145* 4 A. O. Smith 60-gallon commercial gas storage water heater August 2025
BTH-150* 4 A. O. Smith 100-gallon commercial gas storage water heater August 2025
BTH-199* 4 A. O. Smith 100-gallon commercial gas storage water heater August 2025
BTH-250* 4 A. O. Smith 100-gallon commercial gas storage water heater August 2025
BTH-251* 4 A. O. Smith 119-gallon commercial gas storage water heater August 2025
BTH-300* 4 A. O. Smith 119-gallon commercial gas storage water heater August 2025
BTH-400* 4 A. O. Smith 119-gallon commercial gas storage water heater August 2025
BTS 130 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTS 150 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTS 175 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTS 199 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTX-100 3 A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTX-100 4 A. O. Smith 50-gallon commercial gas storage water heater August 2025
BTX-80 1BTX 80 120 A. O. Smith 50-gallon commercial gas storage water heater November 2021
BTXL-100 3 A. O. Smith 75-gallon commercial gas storage water heater November 2021
BTXL-100 4 A. O. Smith 75-gallon commercial gas storage water heater August 2025
GSP 130 2Polaris A. O. Smith 34-gallon commercial gas storage water heater November 2021
GTP 130 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
GTP 150 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
GTP 175 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
GTP 199 2Polaris A. O. Smith 50-gallon commercial gas storage water heater November 2021
AHCG3-100T150-3* 3BTH 150* 3** American 100-gallon commercial gas storage water heater November 2021
AHCG3-100T150-3* 4BTH-150* 4** American 100-gallon commercial gas storage water heater August 2025
AHCG3-100T199-3* 3BTH 199* 3** American 100-gallon commercial gas storage water heater November 2021
AHCG3-100T199-3* 4BTH-199* 4** American 100-gallon commercial gas storage water heater August 2025
AHCG3-100T250-3* 3BTH 250* 3** American 100-gallon commercial gas storage water heater November 2021
AHCG3-100T250-3* 4BTH-250* 4** American 100-gallon commercial gas storage water heater August 2025
AHCG3-119T251-4* 4BTH-251* 4** American 119-gallon commercial gas storage water heater August 2025
AHCG3-119T300-3* 3BTH 300* 3** American 119-gallon commercial gas storage water heater November 2021
AHCG3-119T300-4* 4BTH-300* 4** American 119-gallon commercial gas storage water heater August 2025
AHCG3-119T400-3* 3BTH 400* 3** American 119-gallon commercial gas storage water heater November 2021
AHCG3-119T400-4* 4BTH-400* 4** American 119-gallon commercial gas storage water heater August 2025
AHCG3-60T100-3* 4BTH-100* 4** American 60-gallon commercial gas storage water heater August 2025
AHCG3-60T120-3* 3BTH 120* 3** American 60-gallon commercial gas storage water heater November 2021
AHCG3-60T120-3* 4BTH-120* 4** American 60-gallon commercial gas storage water heater August 2025
AHCG3-60T145-3* 4BTH-145* 4** American 60-gallon commercial gas storage water heater August 2025
HCG3-100T150-3* 3BTH 150* 3** American 100-gallon commercial gas storage water heater November 2021