Ideal Plate Heat Exchanger Kit 175419 (35 kW)

Genuine Ideal OEM plate heat exchanger kit for 35kW combi boilers. This is the secondary/DHW heat exchanger that transfers heat from the primary circuit to domestic hot water, restoring fast and stable hot water performance.

• Manufacturer: Ideal Heating
• Part type: Plate (secondary/DHW) heat exchanger kit
• MPN: 175419
• GTIN / EAN: 5022141754197

Compatible appliances (examples)

Used across multiple Ideal families (some variants depend on serial prefix). Common compatibles include:

• Logic / Logic+ Combi 35 (incl. pre-ABK variants)
• Logic Combi E 35
• Independent C35 (pre-ABK variants)
• Esprit 2 35 (prefix XF onwards)
• Isar HE 35 (prefix XF onwards)

Always check your boilers data plate/parts list and serial prefix (e.g., pre-ABK or XF onwards) against MPN 175419 before ordering.

What this part does

The plate heat exchanger keeps boiler water and tap water separate while transferring heat efficiently for domestic hot water. Blockage or internal failure can cause temperature fluctuations, poor flow, or cross-contamination.

When to replace

• Intermittent or unstable DHW temperatures
• Poor hot water flow/rapid cycling due to scaling or blockage
• Confirmed internal leak between circuits

What’s in the box

• Ideal plate heat exchanger kit 175419 (OEM kit contents; many sellers include O-rings)

Installation & safety

Must be installed by a qualified Gas Safe engineer. After fitting, flush/clean the system, replace seals as required and check DHW performance.