Gas Storage Water Heaters
Certified gas storage-tank water heaters — the familiar tank format with high-efficiency burners and better insulation than standard models.
131 certified models in this category.
| Model | Uniform Energy Factor (UEF) | Fuel | First-hour rating | Max flow rate | Rated storage volume | Smart / connected capable |
| A. O. Smith GC6-PS4050-V 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| A. O. Smith GC6-PS5065-V 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| A. O. Smith GDHE-50 3 50-Gallon | 0.88 | Natural Gas, Propane | 100 gal | — | 49 gal | No |
| A. O. Smith GDHE-75 3 80-Gallon | 0.86 | Natural Gas, Propane | 130 gal | — | 74 gal | No |
| A. O. Smith GPCC-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| A. O. Smith GPCT-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| A. O. Smith GPCT-40L 1 40-Gallon (GC9-PS4050NV 1) | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| A. O. Smith GPCT-40L 1 40-Gallon (HPCT-40L 1) | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| A. O. Smith GPCX-50L 1 50-Gallon | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| A. O. Smith GPCX-50L 1 50-Gallon (GC9-PS5065NV 1) | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| A. O. Smith GPCX-50L 1 50-Gallon (HPCX-50L 1) | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| A. O. Smith GPHE-50 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| A. O. Smith HDHE-50 4 50-Gallon | 0.88 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| A. O. Smith HDHE-75 4 80-Gallon | 0.86 | Natural Gas, Propane | 150 gal | — | 74 gal | No |
| A. O. Smith SWN100035 2 30-Gallon | 0.9 | Natural Gas, Propane | 170 gal | — | 33 gal | No |
| American GPCT-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| American GPCX-50L 1 50-Gallon | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| American GSP-100 2 30-Gallon | 0.9 | Natural Gas, Propane | 170 gal | — | 33 gal | No |
| American PCG62-40S50L 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| American PCG62-50S65L 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| American PG10 34 100 2-V 2 30-Gallon | 0.9 | Natural Gas, Propane | 170 gal | — | 33 gal | No |
| American VG6250T100-V 3 50-Gallon | 0.88 | Natural Gas, Propane | 100 gal | — | 49 gal | No |
| American VG6250T76NV 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| American VG6275T100-V 3 80-Gallon | 0.86 | Natural Gas, Propane | 130 gal | — | 74 gal | No |
| American VG8250T100-V 50-Gallon | 0.88 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| American VG8275T100-V 80-Gallon | 0.86 | Natural Gas, Propane | 150 gal | — | 74 gal | No |
| Envirosense Enercare ENV-40N-ENER 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| Envirosense Enercare ENV-50N-ENER 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| Envirosense ENV-40N 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| Envirosense ENV-50N 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| Envirosense Reliance Home Comfort ENV-40N-RHC 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| Envirosense Reliance Home Comfort ENV-50N-RHC 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| Friedrich 12PROG 40-50P FD HE EC3 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Friedrich 12PROG 40-50U FD HE EC3 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Friedrich 12PROG 50-50P FD HE EC3 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Friedrich 12PROG 50-50U FD HE EC3 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Friedrich 8PROG 40-50P FD HE EC1 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Friedrich 8PROG 40-50U FD HE EC1 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Friedrich 8PROG 50-50P FD HE EC1 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Friedrich 8PROG 50-50U FD HE EC1 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Friedrich Gas Storage 50-Gallon (12PROG 50-100P FD HE EC3) | 0.89 | Propane | 167 gal | — | 50 gal | No |
| Friedrich Gas Storage 50-Gallon (12PROG 50-100U FD HE EC3) | 0.89 | Natural Gas | 167 gal | — | 50 gal | No |
| Friedrich Gas Storage 50-Gallon (12PROG 50-76P FD HE EC3) | 0.89 | Propane | 136 gal | — | 50 gal | No |
| Friedrich Gas Storage 50-Gallon (12PROG 50-76U FD HE EC3) | 0.89 | Natural Gas | 136 gal | — | 50 gal | No |
| Friedrich Gas Storage 80-Gallon (12PROG 75-100P FD HE EC3) | 0.88 | Propane | 199 gal | — | 75 gal | No |
| Friedrich Gas Storage 80-Gallon (12PROG 75-100U FD HE EC3) | 0.88 | Natural Gas | 199 gal | — | 75 gal | No |
| GSW WATER HEATERS 6G50100-PDVH 3 50-Gallon | 0.88 | Natural Gas, Propane | 100 gal | — | 49 gal | No |
| GSW WATER HEATERS 6G5076NVC 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| GSW WATER HEATERS 6G5076NVC02 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| GSW WATER HEATERS 6G75100-PDVH0-3 80-Gallon | 0.86 | Natural Gas, Propane | 130 gal | — | 74 gal | No |
| GSW WATER HEATERS 8G-50100-PDV-H06-4 50-Gallon | 0.88 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| GSW WATER HEATERS 8G-75100-PDV-H06-4 80-Gallon | 0.86 | Natural Gas, Propane | 150 gal | — | 74 gal | No |
| HTP Phoenix 50-Gallon | 0.89 | Natural Gas, Propane | 187 gal | — | 53 gal | No |
| HTP Phoenix 80-Gallon (PH100-119) | 0.9 | Natural Gas, Propane | 178 gal | — | 112 gal | No |
| HTP Phoenix 80-Gallon (PH100-80) | 0.93 | Natural Gas, Propane | 132 gal | — | 75 gal | No |
| HTP Phoenix Light Duty 50-Gallon | 0.9 | Natural Gas, Propane | 154 gal | — | 48 gal | No |
| HTP Phoenix Light Duty 65-Gallon | 0.88 | Natural Gas, Propane | 157 gal | — | 58 gal | No |
| HTP Phoenix Light Duty 80-Gallon | 0.87 | Natural Gas, Propane | 206 gal | — | 77 gal | No |
| Lochinvar LHPCT-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| Lochinvar LHPCX-50L 1 50-Gallon | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| RELIANCE WATER HEATERS 6-40-RPCS 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| RELIANCE WATER HEATERS 6-50-TPDT 3 50-Gallon | 0.88 | Natural Gas, Propane | 100 gal | — | 49 gal | No |
| RELIANCE WATER HEATERS 6-50-YTVIT 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| RELIANCE WATER HEATERS 6-75-TPDT 3 80-Gallon | 0.86 | Natural Gas, Propane | 130 gal | — | 74 gal | No |
| RELIANCE WATER HEATERS 8-50-TPDT 4 50-Gallon | 0.88 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| RELIANCE WATER HEATERS 8-75-TPDT 4 80-Gallon | 0.86 | Natural Gas, Propane | 150 gal | — | 74 gal | No |
| RELIANCE WATER HEATERS GPCT-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| RELIANCE WATER HEATERS GPCX-50L 1 50-Gallon | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| RELIANCE WATER HEATERS PCG62-50S65L 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
| Rheem ECE G40-50U CN HE 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Rheem ECE G50-50U CN HE 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (ECE G50-100U CN HE EC3) | 0.89 | Natural Gas | 167 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (ECE G50-76U CN HE EC3) | 0.89 | Natural Gas | 136 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (PROP G50-100-CN HE EC3) | 0.89 | Natural Gas, Propane | 167 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (PROP G50-100-RH HE EC3) | 0.89 | Natural Gas, Propane | 167 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (PROP G50-76-CN HE EC3) | 0.89 | Natural Gas, Propane | 136 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (PROP G50-76-RH HE EC3) | 0.89 | Natural Gas, Propane | 136 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (XG50T12UHN100-0) | 0.89 | Natural Gas | 167 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (XG50T12UHN76-0) | 0.89 | Natural Gas | 136 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (XP50T12UHC100U0) | 0.89 | Propane | 167 gal | — | 50 gal | No |
| Rheem Gas Storage 50-Gallon (XP50T12UHC76U0) | 0.89 | Propane | 136 gal | — | 50 gal | No |
| Rheem Gas Storage 80-Gallon (PROPG75-100P RH HE EC3) | 0.88 | Propane | 199 gal | — | 75 gal | No |
| Rheem Gas Storage 80-Gallon (PROPG75-100U RH HE EC3) | 0.88 | Natural Gas | 199 gal | — | 75 gal | No |
| Rheem Gas Storage 80-Gallon (XG75T12UHN100U0) | 0.88 | Natural Gas | 199 gal | — | 75 gal | No |
| Rheem Gas Storage 80-Gallon (XP75T12UHC100U0) | 0.88 | Propane | 199 gal | — | 75 gal | No |
| Rheem PRO+G40-50P RH HE EC1 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Rheem PRO+G40-50U RH HE EC1 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Rheem PRO+G50-50P RH HE EC1 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Rheem PRO+G50-50U RH HE EC1 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Rheem PROP G40-50-CN HE 40-Gallon | 0.9 | Natural Gas, Propane | 88 gal | — | 40 gal | No |
| Rheem PROP G40-50-RH HE EC3 40-Gallon | 0.9 | Natural Gas, Propane | 88 gal | — | 40 gal | No |
| Rheem PROP G50-50-CN HE 50-Gallon | 0.88 | Natural Gas, Propane | 95 gal | — | 50 gal | No |
| Rheem PROP G50-50-RH HE EC3 50-Gallon | 0.88 | Natural Gas, Propane | 95 gal | — | 50 gal | No |
| Rheem XG40S12UHN50 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Rheem XG40T09UHN50U0 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Rheem XG50T09UHN50U0 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Rheem XG50T12UHN50 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Rheem XP40S12UHC50 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Rheem XP40T09UHC50U0 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Rheem XP50T09UHN50U0 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Rheem XP50T12UHC50 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Richmond 12GUH40-50F 40-Gallon | 0.9 | Natural Gas, Propane | 88 gal | — | 40 gal | No |
| Richmond 12GUH50-50F 50-Gallon | 0.88 | Natural Gas, Propane | 95 gal | — | 50 gal | No |
| Richmond 9GUH40-50FN 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Richmond 9GUH40-50FP 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Richmond 9GUH50-50FN 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Richmond 9GUH50-50FP 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Richmond Gas Storage 50-Gallon (12GUH50-100F) | 0.89 | Natural Gas, Propane | 167 gal | — | 50 gal | No |
| Richmond Gas Storage 50-Gallon (12GUH50-76F) | 0.89 | Natural Gas, Propane | 136 gal | — | 50 gal | No |
| Richmond Gas Storage 80-Gallon (12GUH75-100FN) | 0.88 | Natural Gas | 199 gal | — | 75 gal | No |
| Richmond Gas Storage 80-Gallon (12GUH75-100FP) | 0.88 | Propane | 199 gal | — | 75 gal | No |
| Ruud Gas Storage 50-Gallon (PROU G50-100-RU HE EC3) | 0.89 | Natural Gas, Propane | 167 gal | — | 50 gal | No |
| Ruud Gas Storage 50-Gallon (PROU G50-76-RU HE EC3) | 0.89 | Natural Gas, Propane | 136 gal | — | 50 gal | No |
| Ruud Gas Storage 80-Gallon (PROUG75-100P RU HE EC3) | 0.88 | Propane | 199 gal | — | 75 gal | No |
| Ruud Gas Storage 80-Gallon (PROUG75-100U RU HE EC3) | 0.88 | Natural Gas | 199 gal | — | 75 gal | No |
| Ruud PRO+G40-50P RU HE EC1 40-Gallon | 0.9 | Propane | 88 gal | — | 40 gal | No |
| Ruud PRO+G40-50U RU HE EC1 40-Gallon | 0.9 | Natural Gas | 88 gal | — | 40 gal | No |
| Ruud PRO+G50-50P RU HE EC1 50-Gallon | 0.88 | Propane | 95 gal | — | 50 gal | No |
| Ruud PRO+G50-50U RU HE EC1 50-Gallon | 0.88 | Natural Gas | 95 gal | — | 50 gal | No |
| Ruud PROU G40-50-RU HE EC3 40-Gallon | 0.9 | Natural Gas, Propane | 88 gal | — | 40 gal | No |
| Ruud PROU G50-50-RU HE EC3 50-Gallon | 0.88 | Natural Gas, Propane | 95 gal | — | 50 gal | No |
| State GHX-34-100 N 2 30-Gallon | 0.9 | Natural Gas, Propane | 170 gal | — | 33 gal | No |
| State GP-8-50-TPDT 4 50-Gallon | 0.88 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| State GP-8-75-TPDT 4 80-Gallon | 0.86 | Natural Gas, Propane | 150 gal | — | 74 gal | No |
| State GP6-40-RPCS 1 40-Gallon | 0.9 | Natural Gas | 86 gal | — | 38 gal | No |
| State GP6-50-TPDT 3 50-Gallon | 0.88 | Natural Gas, Propane | 100 gal | — | 49 gal | No |
| State GP6-50-YTVIT 1 50-Gallon | 0.88 | Natural Gas | 119 gal | — | 48 gal | No |
| State GP6-75-TPDT 3 80-Gallon | 0.86 | Natural Gas, Propane | 130 gal | — | 74 gal | No |
| State GPCT-40L 1 40-Gallon | 0.9 | Natural Gas, Propane | 86 gal | — | 38 gal | No |
| State GPCX-50L 1 50-Gallon | 0.9 | Natural Gas, Propane | 118 gal | — | 49 gal | No |
| State PCG62-50S65L 1 50-Gallon | 0.9 | Natural Gas | 118 gal | — | 49 gal | No |
