Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Boulter
Head to Head
Fer tech 25ov
Fer • 89.1%
Both Boilers
Available FREE through ECO4 scheme
Fer tech 25ov leads with 89.1% efficiency, providing better performance and energy savings.
Both Boulter Bonus 65/90A and Fer tech 25ov 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
