Bosch SSB 800vsViessmann CI2-750
Side-by-side commercial boiler comparison
Bosch SSB 800
Thermal Efficiency
96%
Input Rate
798MBTU/hr
Turndown Ratio
10.00
Application
Indoor
Viessmann CI2-750
Thermal Efficiency
97.8%
Input Rate
750MBTU/hr
Turndown Ratio
10.00
Application
Indoor
Key differences
Both models are closely matched on thermal eff: 96.0 vs 97.8 %. The Bosch SSB 800 is larger at 798 MBTU/hr versus 750 MBTU/hr. Overall, the Viessmann CI2-750 sits higher in the category, ranking above 89% of certified commercial boilers.
Performance
| Spec | Bosch | Viessmann |
|---|---|---|
| Thermal Efficiency(%) | 96 | 97.8 |
| Full-Load Input Rate(MBTU/hr) | 798 | 750 |
| Turndown Ratio | 10.00 | 10.00 |
Configuration
| Spec | Bosch | Viessmann |
|---|---|---|
| Application | Indoor | Indoor |
| Control Type | Multi-stage | Multi-stage |
| Model Name | SSB 800 | CI2-750 |