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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
Firebird
Boulter
Efficiency Winner
Firebird Blue Flame Enviromax Popular 26kW
Best Value
Both boilers are available free through the ECO4 scheme
Both Firebird Blue Flame Enviromax Popular 26kW and Boulter Bonus 40/65 are available free through the ECO4 scheme. Check your eligibility and apply today.
