Summary
The Ferroli Sigma 40 has a SAP seasonal efficiency rating of 77.7%.
The Sigma 40 is a Non-Condensing Conventional boiler with a maximum power output of 11.7kw that uses Gas as its fuel source.
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Specification
| Manufacturer | Ferroli |
| Model | Sigma 40 |
| Fuel Type | Gas |
| Type | Conventional |
| Method | Non-Condensing |
| Flue Type | Room-Sealed |
| Fan | Fan Assisted |
| Output (KW) | 8.5 - 11.7 |
| Boiler ID | |
| Manufactured From/To | 1999 - 2001 |
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