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Detailed side-by-side comparison of efficiency ratings, specifications, and performance
ATAG
Baxi Potterton
Efficiency Winner
ATAG A320S X
Best Value
Both boilers are available free through the ECO4 scheme
Both ATAG A320S X and Baxi Potterton Potterton Promax 15 HE are available free through the ECO4 scheme. Check your eligibility and apply today.
