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Worcester heat exchangers are essential for optimal boiler performance, enabling efficient heat transfer, stable heating, and consistent hot water flow. Our selection includes primary and plate heat exchangers compatible with popular Worcester Greenstar ranges such as 30 Si, 25i/30i Combi, Combi 30 CDi, i System, i Junior and more models-ideal for restoring reliability and performance across your system.
Sale!
Sale!
Sale!We supply both new and refurbished Worcester heat exchangers, all fully tested and backed by a 12-month warranty. Each unit is selected for a secure fit and straightforward replacement, helping maintain long-lasting heating efficiency and dependable hot water delivery.
1) What does a Worcester heat exchanger do?
It transfers heat from the boiler to your central heating water (primary heat exchanger) and/or to your hot water supply (plate heat exchanger in many combi boilers), helping deliver steady heating and hot water.
2) Which Worcester boilers are your heat exchangers compatible with?
We supply heat exchangers suitable for a range of Worcester Bosch Greenstar models (including many CDi, i, Si, and Ri variants). To confirm the exact match, use your boiler model and GC number/part number.
3) How do I know if my Worcester heat exchanger is failing?
Common signs include poor hot water performance, heating cutting out, kettling/banging noises, repeated pressure issues, leaks, or inconsistent temperature.
4) Can a blocked heat exchanger cause hot water to go cold quickly?
Yes. If a plate or primary heat exchanger is scaled or restricted, flow and heat transfer drop-often causing fluctuating hot water temperatures.
5) What causes Worcester heat exchangers to block or fail?
The most common causes are limescale, sludge/magnetite, restricted flow, and poor system water quality. Hard-water areas are especially prone to plate heat exchanger scaling.
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