| ENERGY STAR Partner |
| A.O. Smith Corporation |
Lochinvar, LLC |
| Brand Name |
| GSW WATER HEATERS |
GSW WATER HEATERS |
| Model Name |
| ATHR-199M 1** |
6G50100*PDVH 3** |
| Model Number |
| GTHR-199M 1** |
6G50100*PDVH 3** |
| Fuel Type |
| Natural Gas, Propane |
Natural Gas, Propane |
| Vent Type |
| Power Vent,Power Direct Vent |
Power Vent |
| Storage Volume (gallons) |
| 1 |
49 |
| Maximum Gallons Per Minute |
| 6 |
N/A |
| Minimum Gallons Per Minute |
| 1 |
N/A |
| Draw Pattern (Intended Usage) |
| High-Usage |
High-Usage |
| Uniform Energy Factor (UEF) |
| 1 |
0.88 |
| Therms/year for Natural Gas |
| 178 |
192 |
| Gallons/year for Propane |
| 195 |
209.83 |
| Max. Input Rate for Gas Products (Btu/hr) |
| 199,000 |
100000 |
| Max. Amps |
| 5 |
5 |
| Recovery Efficiency (%) |
| 98 |
95 |
| Tank Height |
| 1 inches / 2.54 cm |
55.7 inches / 141.48 cm |
| Height to Vent |
| 1 inches / 2.54 cm |
8 inches / 20.32 cm |
| Tank Diameter |
| 1 inches / 2.54 cm |
18 inches / 45.72 cm |
| Vent Size |
| 3 inches / 7.62 cm |
2 inches / 5.08 cm |
| Vent Size 2 |
| 2 inches / 5.08 cm |
3 inches / 7.62 cm |
| Water Heater Depth |
| 16 inches / 40.64 cm |
N/A |
| Water Heater Height |
| 27 inches / 68.58 cm |
N/A |
| Water Heater Width |
| 17 inches / 43.18 cm |
N/A |
| Connected Capable |
| No |
No |
| Date Available On Market |
| February 1, 2024 |
September 7, 2015 |
| Date Certified |
| December 18, 2023 |
February 23, 2023 |
| Markets |
| Canada |
United States, Canada |
| CB Model Identifier |
| ES_92897_GTHR-199M 1**_12152023003238_2816622 |
ES_1028919_6G50100*PDVH 3**_02212023100519_7142919 |
| Tax Credit Eligible |
| Yes |
Yes |
| Product Category |
| Water Heaters - Non Solar Electric and Non Solar Gas |
Water Heaters - Non Solar Electric and Non Solar Gas |
| Type |
| Gas Tankless |
Gas-fired Storage Residential-duty Commercial |
| Meets ENERGY STAR Most Efficient 2024 Criteria |
| No |
No |
