Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Chaffoteaux
Head to Head
NST Sogno ELI 8-22
NST • 82.2%
Both Boilers
Available FREE through ECO4 scheme
NST Sogno ELI 8-22 leads with 82.2% efficiency, providing better performance and energy savings.
Both Chaffoteaux Challenger 30ff and NST Sogno ELI 8-22 are available at no cost through the government ECO4 scheme. Take the next step today.
✓ Government Approved Scheme ✓ No Hidden Costs ✓ Professional Installation ✓ Energy Efficient
