The Vaillant 0020038572 is a genuine OEM primary heat exchanger designed for efficient heat transfer within a range of Vaillant ecoTEC Pro and ecoTEC Plus combi boilers. As one of the most critical components in a boiler, the heat exchanger transfers heat from the burner to the system water, ensuring consistent heating performance, energy efficiency, and long-term reliability.

A failing or scaled heat exchanger may cause kettling, reduced heating output, fluctuating temperatures, error codes, or boiler lockouts. Replacing it with this genuine Vaillant unit restores optimal boiler performance and ensures safe, efficient operation.

Key Features:

• Genuine Vaillant primary heat exchanger

• Ensures efficient, stable heat transfer

• Designed for ecoTEC Pro & ecoTEC Plus VUW combi boilers

• Helps resolve kettling, poor heating performance & overheating issues

• Manufactured to Vaillant’s strict OEM quality standards

• Durable, corrosion-resistant construction

• Direct-fit replacement for reliable servicing and repair

Compatibility

The Vaillant 0020038572 Heat Exchanger is compatible with the following boilers:

• ecoTEC Pro VUW models

• ecoTEC Plus VUW models

• ecoTEC Pro 28

• Any Vaillant appliance listing 0020038572 in its official parts documentation

Engineers should always verify compatibility using the boiler’s service manual or parts list.