Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
British Gas/Scottish Gas
Head to Head
Optia FF40
Optia • 78.6%
Both Boilers
Available FREE through ECO4 scheme
Optia FF40 leads with 78.6% efficiency, providing better performance and energy savings.
Both British Gas/Scottish Gas C1 RSF and Optia FF40 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