Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Worcester
Main 12 HE
Main • 85.8%
Both Boilers
Available FREE through ECO4 scheme
Main 12 HE offers superior efficiency at 85.8%, making it the better choice for long-term savings.
Both Main 12 HE and Worcester 15 CBi RSF 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
