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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
Ferroli
Atlantic Boilers
Efficiency Winner
Ferroli Optimax 25 OV
Best Value
Both boilers are available free through the ECO4 scheme
Both Ferroli Optimax 25 OV and Atlantic Boilers KDB 251 KCA are available free through the ECO4 scheme. Check your eligibility and apply today.
