Burnham by U.S. Boiler CTD800vsNavien NFB700-800C
Side-by-side commercial boiler comparison
Burnham by U.S. Boiler CTD800
Thermal Efficiency
97%
Input Rate
800MBTU/hr
Turndown Ratio
10.00
Application
Indoor
Navien NFB700-800C
Thermal Efficiency
97.5%
Input Rate
799MBTU/hr
Turndown Ratio
12.00
Application
Indoor
Key differences
Both models are closely matched on thermal eff: 97.0 vs 97.5 %. The Burnham by U.S. Boiler CTD800 is larger at 800 MBTU/hr versus 799 MBTU/hr. Overall, the Navien NFB700-800C sits higher in the category, ranking above 84% of certified commercial boilers.
Performance
| Spec | Burnham by U.S. Boiler | Navien |
|---|---|---|
| Thermal Efficiency(%) | 97 | 97.5 |
| Full-Load Input Rate(MBTU/hr) | 800 | 799 |
| Turndown Ratio | 10.00 | 12.00 |
Configuration
| Spec | Burnham by U.S. Boiler | Navien |
|---|---|---|
| Application | Indoor | Indoor |
| Control Type | Multi-stage | Multi-stage |
| Model Name | Citadel | NFB700-800C |