NTI FTG 1400vsViessmann CI2-1500
Side-by-side commercial boiler comparison
NTI FTG 1400
Thermal Efficiency
96%
Input Rate
1400MBTU/hr
Turndown Ratio
10.00
Application
Indoor
Viessmann CI2-1500
Thermal Efficiency
97.3%
Input Rate
1500MBTU/hr
Turndown Ratio
30.00
Application
Indoor
Key differences
Both models are closely matched on thermal eff: 96.0 vs 97.3 %. The Viessmann CI2-1500 is larger at 1500 MBTU/hr versus 1400 MBTU/hr. Overall, the Viessmann CI2-1500 sits higher in the category, ranking above 83% of certified commercial boilers.
Performance
| Spec | NTI | Viessmann |
|---|---|---|
| Thermal Efficiency(%) | 96 | 97.3 |
| Full-Load Input Rate(MBTU/hr) | 1400 | 1500 |
| Turndown Ratio | 10.00 | 30.00 |
Configuration
| Spec | NTI | Viessmann |
|---|---|---|
| Application | Indoor | Indoor |
| Control Type | Multi-stage | Multi-stage |
| Model Name | NTI | CI2-1500 |