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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
Firebird
Atmos
Efficiency Winner
Atmos Atmos Compact Combi N30K
Best Value
Both boilers are available free through the ECO4 scheme
Both Firebird Boilerhouse S 150-200 and Atmos Atmos Compact Combi N30K are available free through the ECO4 scheme. Check your eligibility and apply today.
