Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Protherm
Keston C 40P
Keston • 90.3%
Both Boilers
Available FREE through ECO4 scheme
Keston C 40P offers superior efficiency at 90.3%, making it the better choice for long-term savings.
Both Keston C 40P 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
