Comprehensive side-by-side analysis of efficiency ratings, specifications, and performance metrics
Head to Head
GEM
ATAG A200S OV
ATAG • 89.4%
Both Boilers
Available FREE through ECO4 scheme
ATAG A200S OV offers superior efficiency at 89.4%, making it the better choice for long-term savings.
Both ATAG A200S OV and GEM CC1 15/20 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
