Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Glow-worm
Head to Head
Merlin 100/150 BF
Merlin • 81.3%
Both Boilers
Available FREE through ECO4 scheme
Merlin 100/150 BF leads with 81.3% efficiency, providing better performance and energy savings.
Both Glow-worm 105-120B 105-120B and Merlin 100/150 BF 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
