Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
British / Scottish Gas
A O Smith UB70 G
A O Smith • 89.5%
Both Boilers
Available FREE through ECO4 scheme
A O Smith UB70 G offers superior efficiency at 89.5%, making it the better choice for long-term savings.
Both A O Smith UB70 G and British / Scottish Gas RD1 3100 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
