ATAG A203C 14 Plate Heat Exchanger – Refurbished | Part No. S4746400

The plate heat exchanger transfers heat between the primary circuit and domestic hot water — once it's scaled, blocked, or leaking, hot water output and heating efficiency drop off. The ATAG A203C 14 Plate Heat Exchanger S4746400 (Refurbished) is the correct direct replacement, specifically designed for the ATAG A203C boiler.

This is a professionally refurbished genuine ATAG component, taken from a fully functioning boiler and quality-checked by an experienced engineering team. Minor cosmetic marks may be present, consistent with removal from a working boiler. Supplied with a full 12-month warranty.

Compatible ATAG Boiler Model

Refurbished. Quality-Checked. 12-Month Warranty.

Every refurbished S4746400 plate heat exchanger is quality-checked to OEM standards, restoring efficient heat transfer in the ATAG A203C. Supplied with a full 12-month warranty.

Delivery & Returns

Orders placed before 1:00 PM (Mon–Fri) are dispatched the same working day. Standard and next-day delivery available at checkout. Returns accepted within 30 days in original, unused condition.

Note: Please confirm that part number S4746400 matches your existing heat exchanger before ordering. Must be fitted by a Gas Safe registered engineer.

Product Reference