Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Grant
Boulter Bonus 65/95
Boulter • 83.5%
Both Boilers
Available FREE through ECO4 scheme
Boulter Bonus 65/95 offers superior efficiency at 83.5%, making it the better choice for long-term savings.
Both Boulter Bonus 65/95 and Grant Combi 70 Mk II 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
