Baxi 624 630 825 830 DHW 12 Plate Heat Exchanger – Refurbished | Part No. 7683965

Weak hot water flow, fluctuating temperatures, or a boiler that struggles to keep up with demand are classic signs of a failing plate heat exchanger. The Baxi DHW 12 Plate Heat Exchanger (Part No. 7683965) is the genuine direct replacement for compatible Baxi, Main, and Potterton combi boilers — restoring efficient heat transfer between the primary circuit and the domestic hot water supply, and bringing your boiler back to full performance.

This is a fully refurbished genuine Baxi Group component, professionally cleaned, descaled, and pressure-tested before dispatch to meet original manufacturer standards. The 12-plate design provides a direct like-for-like fit across multiple Baxi 600 and 800 series models, as well as selected Main Eco Compact and Potterton Combi boilers — with no modifications required during installation.

Compatible Boiler Models

Key Features

• Genuine Baxi Group part number 7683965 — direct OEM replacement
• 12-plate DHW design for efficient domestic hot water heat transfer
• Fully refurbished: professionally cleaned, descaled, and pressure-tested
• Covers Baxi 624, 630, 825 & 830 Combi, Main Eco Compact 25/30, and Potterton Combi 25/30 (NG & LPG)
• 12-month warranty included
• Manufacturer: Baxi Group (Baxi / Main / Potterton)

Why Choose This Refurbished Unit?

Replacing the plate heat exchanger with this refurbished 7683965 resolves the most common causes of DHW performance loss — limescale blockage, debris build-up, and plate degradation — at a fraction of the cost of a new OEM part. Every unit is pressure-tested and inspected before dispatch, so you receive a component that performs to original standards from day one. A cost-effective, dependable solution for homeowners and Gas Safe engineers alike.

Delivery & Returns

Orders placed before 3:00 PM (Monday–Friday) are dispatched the same working day. Standard and next-day delivery options available at checkout. Next-day orders placed on Fridays arrive Monday — select Saturday delivery at checkout for weekend delivery. Returns accepted within 30 days if unused and in original packaging.

Note: Please confirm that part number 7683965 matches your existing unit before ordering. Installation must be carried out by a Gas Safe registered engineer.