A true replacement is more than a matching part number. It requires matching geometry, heat-transfer performance, connection accuracy and pressure integrity.

BAXI 5122147 / 5114687 Stainless Steel Main Heat Exchanger – One-for-One Replacement

The BAXI 5122147 / 5114687 Stainless Steel Main Heat Exchanger is engineered as a one-for-one replacement for compatible BAXI condensing combi boilers.

Unlike generic replacement heat exchangers, this product is manufactured to match the original heat exchanger's critical dimensions, connection positions, tube configuration and installation interfaces. This allows heating engineers to replace the existing component without unnecessary modification to the boiler system.

The heat exchanger is manufactured using an OEM-equivalent production approach, including precision stainless steel tube forming, coil bending, hydroforming and controlled welding. The hydroformed tube structure helps maintain consistent tube spacing and an optimized heat-transfer surface, supporting efficient thermal energy transfer during condensing boiler operation.

After assembly, critical dimensions, welded connections and water-side integrity are checked through controlled quality inspection, pressure testing and leak testing.

Why Choose This BAXI Replacement Heat Exchanger?

• One-for-One Replacement – Designed to match the original critical dimensions and installation interfaces.
• Accurate Connections – Connection positions and interfaces are controlled for reliable installation.
• Original-Style Tube Geometry – The tube configuration is engineered to replicate the original heat-transfer structure.
• OEM-Equivalent Manufacturing Process – Precision forming, hydroforming and controlled welding.
• Efficient Heat Transfer – Consistent tube spacing helps optimize gas-side heat transfer.
• Stainless Steel Construction – Suitable for the demanding temperature and condensate environment of modern condensing boilers.
• Pressure & Leak Tested – Water-side integrity is verified before shipment.
• Professional Aftermarket Quality – Suitable for heating engineers, boiler repair companies and BAXI spare-parts distributors.

A Replacement Designed for the Real Requirements of Boiler Engineers

For professional boiler servicing, a replacement heat exchanger needs to do more than simply fit the part number. It needs to fit correctly, connect correctly and perform reliably.

By controlling the critical geometry and manufacturing processes, this BAXI 5122147 / 5114687 replacement heat exchanger provides a practical one-for-one replacement solution for compatible applications.

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Baxi Duo-Tec 24 28 Combi & 24 HE A Main Heat Exchanger 5122147 New Genuine Part

BAXI DUOTEC / PLATINUM 24 28 HE A & MEGAFLO 1MAIN HEAT EXCHANGER 5122147

Meets EU ErP Directive and all major global environmental standards

FAQ

Is the BAXI 5122147 / 5114687 heat exchanger a direct replacement?

Yes. The heat exchanger is engineered as a one-for-one replacement for compatible applications, with the critical dimensions, connection positions, tube configuration and installation interfaces matched to the original heat exchanger design.

This allows professional heating engineers to replace the existing heat exchanger without unnecessary modification, subject to verification of the boiler model and original part number before installation.

Is the manufacturing process the same as the original?

The product is manufactured using OEM-equivalent engineering principles and controlled production processes, including stainless steel tube forming, precision bending, hydroforming, welding, pressure testing and leak testing.

The objective is to reproduce the original heat exchanger's critical geometry and functional requirements rather than simply producing a generic heat exchanger with a similar appearance.

Why is hydroforming important?

Hydroforming creates controlled geometry directly in the stainless steel tube. This helps maintain consistent tube spacing and provides an optimized heat-transfer structure for condensing boiler applications.

Has the heat exchanger been pressure tested?

Yes. The finished heat exchanger is subject to controlled pressure and leak testing to verify water-side integrity before shipment.

Certificate

Product packaging