Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
DD Heating
Head to Head
Grandee GCCW 15/22
Grandee • 88.5%
Both Boilers
Available FREE through ECO4 scheme
Grandee GCCW 15/22 leads with 88.5% efficiency, providing better performance and energy savings.
Both DD Heating Heatline C28S and Grandee GCCW 15/22 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
