Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Alde
Head to Head
Boulter Bonus 40/65
Boulter • 85.5%
Both Boilers
Available FREE through ECO4 scheme
Boulter Bonus 40/65 leads with 85.5% efficiency, providing better performance and energy savings.
Both Alde Slimline 2927 and Boulter Bonus 40/65 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
