Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Servowarm
i 35
i • 88.9%
Both Boilers
Available FREE through ECO4 scheme
i 35 offers superior efficiency at 88.9%, making it the better choice for long-term savings.
Both i 35 and Servowarm Elite 21 Plus 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
