Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
Potterton International Heating
Grandee GCCF 15/23
Grandee • 88.5%
Both Boilers
Available FREE through ECO4 scheme
Grandee GCCF 15/23 offers superior efficiency at 88.5%, making it the better choice for long-term savings.
Both Grandee GCCF 15/23 and Potterton International Heating 35Cf 35cf 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
