Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Ferroli
Head to Head
Glow-worm 12hxi
Glow-worm • 88.7%
Both Boilers
Available FREE through ECO4 scheme
Glow-worm 12hxi leads with 88.7% efficiency, providing better performance and energy savings.
Both Ferroli 77FF and Glow-worm 12hxi 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
