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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
Baxi Potterton
Biasi
Efficiency Winner
Baxi Potterton Potterton Promax 15 HE
Best Value
Both boilers are available free through the ECO4 scheme
Both Baxi Potterton Potterton Promax 15 HE and Biasi 24SR are available free through the ECO4 scheme. Check your eligibility and apply today.
