Commercial water heatersENERGY STAR certified
A. O. Smith BTH-120* 4**
120 kBtu/h gas storage water heater.
Input rate
120 kBtu/h
Storage
60 gal
Thermal efficiency
0.97
Fuel
Gas, Propane
Of 393 certified gas storage commercial water heaters, 18 have a higher thermal efficiency than the BTH-120* 4** (0.97).
- Maker
- A. O. Smith
- Model
- BTH-120* 4**
- Type
- Gas Storage
- Fuel
- Gas, Propane
- Storage
- 60 gal
- Thermal efficiency
- 0.97
- Input rate
- 120 kBtu/h
- Standby loss
- 800 Btu/h
- Vent
- Power Direct Vent
- On the market since
- Aug 2025
- ENERGY STAR certified
- 13 Aug 2025
Source: ENERGY STAR certified commercial water heaters dataset, US EPA, record 4481256, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the BTH-120* 4**
Certified commercial water heaters from other makers, same color class, within 20% of its speed.
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| State BTH 120* 3** | Gas Storage | Gas, Propane | 60 gal | 120 kBtu/h |
| American BTH 120* 3** | Gas Storage | Gas, Propane | 60 gal | 120 kBtu/h |
| American BTH-120* 4** | Gas Storage | Gas, Propane | 60 gal | 120 kBtu/h |
| State BTH-120* 4** | Gas Storage | Gas, Propane | 60 gal | 120 kBtu/h |
| Bradford White EF60T125E*N*2 | Gas Storage | Gas | 60 gal | 125 kBtu/h |
| Laars LUHE60T125E*N* | Gas Storage | Gas | 60 gal | 125 kBtu/h |
A. O. Smith
More A. O. Smith commercial water heaters
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| PWH1250(N,L)(P)(-CAN) | Gas Tankless | Gas, Propane | 12 gal | 1,250 kBtu/h |
| PWH1500(N,L)(P)(-CAN) | Gas Tankless | Gas, Propane | 14 gal | 1,500 kBtu/h |
| PWH2000(N,L)(P)(-CAN) | Gas Tankless | Gas, Propane | 18 gal | 1,999 kBtu/h |
| PWH3000(N,L)(P)(-CAN) | Gas Tankless | Gas, Propane | 29 gal | 3,000 kBtu/h |
| PWH4000(N,L)(P)(-CAN) | Gas Tankless | Gas, Propane | 46 gal | 4,000 kBtu/h |
| BTH 251* 3** | Gas Storage | Gas, Propane | 119 gal | 250 kBtu/h |
| BTH 400* 3** | Gas Storage | Gas, Propane | 119 gal | 400 kBtu/h |
| BTH 300* 3** | Gas Storage | Gas, Propane | 119 gal | 300 kBtu/h |