Description
Worcester Greenstar 25i Combi ERP Boiler Heat exchanger 8716117040
The Worcester heat exchanger is essential for maintaining your boiler’s heating performance. The WB6 heat exchanger with part number 8716117040 ensures fast heat transfer and consistent water temperature. This refurbished part helps your system run efficiently and supports reliable hot water output throughout your home.
Compatible Boilers
To make your choice easier, this part is compatible with the following Worcester boiler models:
Worcester Greenstar i Combi ERP:
25i Combi ERP – GC No. 47-406-60 (7733600012)
25i Combi ERP LPG – GC No. 47-406-61 (7733600031)
30i Combi ERP – GC No. 47-406-62 (7733600005)
30i Combi ERP LPG – GC No. 47-406-63 (7733600032)
Worcester Greenstar i System ERP:
9i System ERP – GC No. 41-406-21 (7733600011)
9i System ERP LPG – GC No. 41-406-22 (7733600033)
12i System ERP – GC No. 41-406-23 (7733600010)
12i System ERP LPG – GC No. 41-406-24 (7733600034)
15i System ERP – GC No. 41-406-25 (7733600009)
15i System ERP LPG – GC No. 41-406-26 (7733600035)
18i System ERP – GC No. 41-406-27 (7733600008)
18i System ERP LPG – GC No. 41-406-28 (7733600036)
21i System ERP – GC No. 41-406-29 (7733600007)
21i System ERP LPG – GC No. 41-406-30 (7733600037)
24i System ERP – GC No. 41-406-31 (7733600006)
24i System ERP LPG – GC No. 41-406-32 (7733600038)
Why Choose This Product?
This Worcester heat exchanger is a cost-effective way to restore your boiler’s full heating output. Each 8716117040 WB6 unit undergoes strict testing during the refurbishment process. It functions like new and provides the heat transfer your system needs. You’ll get excellent performance and energy savings at a lower price. This part solves hot water and heating problems quickly and reliably.
Delivery and Return
Place your order before 1 PM for same-day dispatch. We offer fast shipping options, including next-working-day delivery. Returns are accepted within 30 days for unused items in original packaging.
For safety and warranty protection, always use a Gas Safe registered engineer for installation.
Frequently Asked Questions
1. Which Worcester boilers is the 8716117040 heat exchanger compatible with?
The 8716117040 WB6 heat exchanger fits Worcester Greenstar i Combi ERP boilers including 25i Combi ERP, 25i Combi ERP LPG, 30i Combi ERP, and 30i Combi ERP LPG. It also fits Greenstar i System ERP models including 9i, 12i, 15i, 18i, 21i, and 24i System ERP, along with their LPG variants.
2. Is this a new or refurbished part?
This is a fully refurbished Worcester heat exchanger. Each unit is thoroughly tested to ensure full functionality and performance comparable to a new part. Minor cosmetic marks may be present due to refurbishment.
3. What warranty comes with this heat exchanger?
All refurbished Worcester heat exchangers, including the 8716117040 WB6, come with a 12-month warranty covering defects in refurbishment and quality assurance.
4. How quickly can I receive this part?
Orders placed before 1 PM are dispatched the same day. Fast shipping options are available, including next-working-day delivery, though delivery times may vary based on location.
5. Who should install the heat exchanger?
For safety and warranty protection, the Worcester 8716117040 heat exchanger must be installed by a Gas Safe registered engineer. Improper installation can result in safety risks and void the warranty.












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