Velocity Boiler Works PHX1250C-OvsWeil-McLain SF1500
Side-by-side commercial boiler comparison
Velocity Boiler Works PHX1250C-O
Thermal Efficiency
97%
Input Rate
1250MBTU/hr
Turndown Ratio
10.00
Application
Outdoor
Weil-McLain SF1500
Thermal Efficiency
95.8%
Input Rate
1500MBTU/hr
Turndown Ratio
6.00
Application
Indoor
Key differences
Both models are closely matched on thermal eff: 97.0 vs 95.8 %. The Weil-McLain SF1500 is larger at 1500 MBTU/hr versus 1250 MBTU/hr. Overall, the Velocity Boiler Works PHX1250C-O sits higher in the category, ranking above 74% of certified commercial boilers.
Performance
| Spec | Velocity Boiler Works | Weil-McLain |
|---|---|---|
| Thermal Efficiency(%) | 97 | 95.8 |
| Full-Load Input Rate(MBTU/hr) | 1250 | 1500 |
| Turndown Ratio | 10.00 | 6.00 |
Configuration
| Spec | Velocity Boiler Works | Weil-McLain |
|---|---|---|
| Application | Outdoor | Indoor |
| Control Type | Multi-stage | Multi-stage |
| Model Name | Phantom-XL | SF1500 |