Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Grandee
Head to Head
Quantum DB
Quantum • 88.6%
Both Boilers
Available FREE through ECO4 scheme
Quantum DB leads with 88.6% efficiency, providing better performance and energy savings.
Both Grandee GCCF 23/30 and Quantum DB 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
