Description

Worcester Heatslave II 12/18 ERP Pump Assembly 8716117574

The Worcester Heatslave II 12/18 ERP pump 8716117574 helps move water smoothly through the boiler, so your heating system can deliver steady warmth and reliable hot water. However, when the pump wears out, circulation can drop and cause poor performance. Therefore, replacing it with this refurbished unit helps restore proper flow, improve efficiency, and support consistent day-to-day operation in your Worcester oil boiler.

Compatible Boilers

This part is compatible with the following Worcester models:

Heatslave II Series

• 12/18 (2022) – GC No. 7731600260
• 18/25 (2022) – GC No. 7731600261
• 25/32 (2022) – GC No. 7731600262

Heatslave II ERP Series

• 12/18 ERP – GC No. 7731600047
• 18/25 ERP – GC No. 7731600048

Heatslave II ERP+ Series

• 12/18 ERP+ – GC No. 7731600165
• 18/25 ERP+ – GC No. 7731600166

Heatslave II External Series

• 12/18 External (2022) – GC No. 7731600263
• 18/25 External (2022) – GC No. 7731600264

Heatslave II External ERP Series

• Ext 12/18 ERP – GC No. 7731600050
• Ext 18/25 ERP – GC No. 7731600051

Heatslave II External ERP+ Series

• External 12/18 ERP+ – GC No. 7731600168
• External 18/25 ERP+ – GC No. 7731600169

Why Choose This Product?

This refurbished Worcester boiler pump offers a practical and cost-effective way to restore water circulation and steady heating performance. In addition, each unit provides a smart replacement option for worn or faulty pumps, helping you avoid unnecessary repair costs while keeping your heating system running smoothly.

Delivery and Return

Order before 1 PM for same-day dispatch with standard and next-day delivery options available. Returns are accepted within 30 days if the part remains unused and in its original packaging. However, always use a qualified engineer for installation and safe system operation.

Frequently Asked Questions

1. What does this pump do in the boiler?
This pump circulates heated water through the boiler and system, so the appliance can maintain steady heating performance. If the pump fails, circulation can weaken, and that may lead to poor heat distribution or reduced hot water performance.

2. Is this pump compatible with the Worcester Heatslave II 12/18 ERP?
Yes, this listing is for the Worcester Heatslave II 12/18 ERP pump with part number 8716117574. Even so, always check the part number on your existing component before ordering to make sure it matches correctly.

3. Why choose a refurbished boiler pump?
A refurbished pump gives you a more affordable way to restore boiler performance without replacing the full system. In addition, it helps reduce waste, so it offers a practical repair option for many heating faults.

4. Can a faulty pump affect heating performance?
Yes, a worn or failing pump can reduce water circulation and make the system less efficient. As a result, you may notice weak heating, uneven warmth, or unreliable system performance.

5. Who should install this pump?
A qualified heating engineer should install the part to make sure it fits correctly and operates safely. Professional installation also helps protect the boiler and supports reliable long-term performance.