Complete technical details and performance specifications for the Ferroli Sigma 40
A J Wells and Sons
A O Smith
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i-mini
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The Ferroli Sigma 40 delivers exceptional performance with a 77.7% efficiency rating, making it one of the most energy-efficient heating solutions available.
This Conventional boiler provides 8.5 - 11.7 (KW) of reliable heating power using Gas fuel for optimal performance.
Potential annual savings of £50-£200 compared to older, less efficient boilers, while reducing your carbon footprint.
Discover why the Ferroli Sigma 40 is the perfect heating solution for your home
77.7% efficiency rating delivers maximum energy savings and optimal performance
Save £50-£200 annually on energy bills compared to older, less efficient boilers
Trusted Ferroli engineering with comprehensive warranty coverage
Built to last with modern condensing technology and premium components
Discover other high-efficiency boilers that might be perfect for your home
Advanced tools designed specifically for the Ferroli Sigma 40 to help you make informed decisions
Calculate specific savings with the Ferroli Sigma 40, including CO₂ reduction and payback period analysis.
Compare the Ferroli Sigma 40 against other boiler models with detailed specifications and performance metrics.
Check if you qualify for a free Ferroli Sigma 40 replacement through the government ECO4 scheme.
The Ferroli Sigma 40 with its 77.7% efficiency rating is available at no cost through the government ECO4 scheme. Professional installation included with potential savings of £50-£200 annually.
✓ Government Approved ECO4 ✓ Ferroli Authorized ✓ 77.7% Efficiency Rated ✓ Professional Installation
