Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Boulter
Head to Head
British Gas 330
British Gas • 89.7%
Both Boilers
Available FREE through ECO4 scheme
British Gas 330 leads with 89.7% efficiency, providing better performance and energy savings.
Both Boulter Bonus 40/65 and British Gas 330 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
