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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
Firebird
Atmos
Efficiency Winner
Atmos InterCombi HE32
Best Value
Both boilers are available free through the ECO4 scheme
Both Firebird Boilerhouse S 120-150 and Atmos InterCombi HE32 are available free through the ECO4 scheme. Check your eligibility and apply today.
