Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
British / Scottish Gas
Head to Head
Main 12 HE
Main • 85.8%
Both Boilers
Available FREE through ECO4 scheme
Main 12 HE leads with 85.8% efficiency, providing better performance and energy savings.
Both British / Scottish Gas RD1 3100 and Main 12 HE 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
