Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Merlin
Main 12 HE A
Main • 88.7%
Both Boilers
Available FREE through ECO4 scheme
Main 12 HE A offers superior efficiency at 88.7%, making it the better choice for long-term savings.
Both Main 12 HE A and Merlin 100/150 CF 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
