Worcester SI Compact Plate Heat Exchanger 16 Plates – Refurbished | Part No. 87186429480

Lukewarm taps, low hot water pressure, and reduced heating performance in a Worcester Greenstar CDI Compact or SI Compact boiler are common signs of a failing plate heat exchanger. Since this part is responsible for transferring heat between the primary and domestic hot water circuits, a worn unit directly affects both water pressure and temperature stability. The Worcester SI Compact Plate Heat Exchanger (Part No. 87186429480) restores that transfer and brings hot water performance back to normal.

This 16-plate heat exchanger (C-PHE) is a direct fit across the compatible CDI Compact and SI Compact range, including ERP and LPG variants, requiring no modification for installation.

Compatible Boiler Models

Quality. Reliable Performance. Backed by Warranty.

This 16-plate heat exchanger restores efficient heat transfer and resolves common issues such as fluctuating water temperature and weak hot water flow. Supplied with a full 12-month warranty for dependable, long-term performance.

Delivery & Returns

Orders placed before 1:00 PM are dispatched the same working day, with standard and next-day delivery available at checkout. Returns are accepted within 30 days, provided the item is unused and in original condition.

Note: Please confirm that part number 87186429480 matches your existing unit before ordering. Installation must be carried out by a Gas Safe registered engineer to ensure safety compliance and warranty validity.

Condition Notice: The source listing for this item is inconsistent — the product summary states "Brand New," while the Additional Information table on the same page states "Refurbished." We have listed it here as Refurbished to match your store's product line and the field actually used for condition data, but you should verify the true condition with the supplier before publishing, since this affects both the listing accuracy and the price point.