17 certified models
BOCK commercial water heaters
Every BOCK water heater certified under ENERGY STAR and listed for the US market, fastest first. Each model page has the full certified specs and comparable machines from other makers.
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| 60HEC-125-NA-**** | Gas Storage | Gas | 60 gal | 125 kBtu/h |
| 60HEC-125-XA-**** | Gas Storage | Propane | 60 gal | 125 kBtu/h |
| ODOT400*2-*** | Gas Storage | Gas, Propane | 119 gal | 400 kBtu/h |
| ODOT400*2-A-*** | Gas Storage | Gas, Propane | 125 gal | 400 kBtu/h |
| ODOT500*2-*** | Gas Storage-type Instantaneous | Gas, Propane | 119 gal | 500 kBtu/h |
| ODOT500*2-A-*** | Gas Storage-type Instantaneous | Gas, Propane | 125 gal | 500 kBtu/h |
| OT250*2-*-*** | Gas Storage | Gas, Propane | 100 gal | 250 kBtu/h |
| OT300*2-*** | Gas Storage | Gas, Propane | 119 gal | 300 kBtu/h |
| OT300*2-A-*** | Gas Storage | Gas, Propane | 125 gal | 300 kBtu/h |
| OT400*2-*** | Gas Storage | Gas, Propane | 119 gal | 400 kBtu/h |
| OT400*2-A-*** | Gas Storage | Gas, Propane | 125 gal | 400 kBtu/h |
| OT500*2-*** | Gas Storage-type Instantaneous | Gas, Propane | 119 gal | 500 kBtu/h |
| OT500*2-A-*** | Gas Storage-type Instantaneous | Gas, Propane | 125 gal | 500 kBtu/h |
| OT600*-A | Gas Storage-type Instantaneous | Gas, Propane | 130 gal | 600 kBtu/h |
| OT700*-A | Gas Storage-type Instantaneous | Gas, Propane | 130 gal | 700 kBtu/h |
| OT800*-A | Gas Storage-type Instantaneous | Gas, Propane | 130 gal | 800 kBtu/h |
| OT900*-A | Gas Storage-type Instantaneous | Gas, Propane | 130 gal | 900 kBtu/h |
Source: ENERGY STAR certification data, US EPA. Data build 2026-09-29. Brand names are as the maker certified them, with obvious variant spellings merged.