Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Boulter
Head to Head
Grandee GCCF 15/23
Grandee • 88.5%
Both Boilers
Available FREE through ECO4 scheme
Grandee GCCF 15/23 leads with 88.5% efficiency, providing better performance and energy savings.
Both Boulter Bonus 65/95 and Grandee GCCF 15/23 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
