Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Protherm
Boulter Bonus 65/90A
Boulter • 85.0%
Both Boilers
Available FREE through ECO4 scheme
Boulter Bonus 65/90A offers superior efficiency at 85.0%, making it the better choice for long-term savings.
Both Boulter Bonus 65/90A and Protherm 80 EC 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
