Vaillant ecoTEC VU GB 656/4-5 Pump – Refurbished | Part No. 180929 / 0020211454

Sluggish heating, low hot water pressure, and poor system response in a Vaillant ecoMAX 665 VU or ecoTEC VU GB 656/4-5 boiler are frequently caused by a deteriorating pump. The pump circulates heated water through the primary heating and DHW circuit — when it fails, the boiler can no longer maintain stable flow or temperature. The Vaillant Ecotec VU GB 656/4-5 Pump 180929 / 0020211454 (Refurbished) is the correct replacement, restoring reliable and consistent circulation across the ecoMAX 665 VU and ecoTEC VU GB 656/4-5 (2007–2018) boilers.

This is a professionally refurbished genuine Vaillant component — fully tested and quality-checked before dispatch. Part number 180929 is also cross-referenced as 0020211454. Only 1 unit remaining in stock. Supplied with a full 12-month warranty. Minor cosmetic marks may be present.

Compatible Vaillant Models

Refurbished. Tested. 12-Month Warranty.

Every refurbished Vaillant pump is fully tested and quality-checked before dispatch. This 180929 / 0020211454 unit restores correct circulation in the ecoMAX 665 VU and ecoTEC VU GB 656/4-5 ranges. Supplied with a full 12-month warranty.

Delivery & Returns

Orders placed before 3:00 PM (Mon–Fri) are dispatched the same working day. Standard and next-day delivery available at checkout. Returns accepted within 30 days in original unused condition.

Note: Please confirm that part number 180929 / 0020211454 matches your existing pump before ordering. Must be fitted by a Gas Safe registered engineer.

Product Reference