The Baxi 836 Combi Grundfos Pump UPM4 7855245 circulates water efficiently throughout your boiler system. This brand new pump supports consistent heating performance and improves overall system reliability. In addition, it comes supplied with an auto air vent, which helps release trapped air and maintains smooth circulation. The part number 7855245 ensures accurate fitment for compatible Baxi boilers, making it a dependable replacement choice.

Compatible Boilers

Baxi Combi Series

• Baxi 624 Combi (GC No. 47-077-28)

• Baxi 630 Combi (GC No. 47-077-29)

• Baxi 636 Combi (GC No. 47-077-30)

• Baxi 825 Combi (GC No. 47-077-38)

• Baxi 830 Combi (GC No. 47-077-39)

• Baxi 836 Combi (GC No. 47-077-40)

Baxi System Series

• Baxi 818 System (GC No. 41-470-73)

• Baxi 824 System (GC No. 41-470-74)

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Why Choose This Product?

This Baxi Grundfos pump delivers efficient water circulation, and therefore helps your boiler maintain stable heating and hot water output. Moreover, the included auto air vent reduces air build-up, which improves system performance and reduces noise. Because this pump is brand new, it provides long-term reliability and consistent operation. As a result, it helps protect other boiler components and supports energy-efficient performance.

Delivery and Return

Orders placed before 1 PM are dispatched the same working day, so you receive your part without delay. Additionally, you can choose standard or next-day delivery at checkout for added convenience. If you are not fully satisfied, you may return the item within 30 days provided it remains unused and in its original condition. For safety and correct installation, always use a Gas Safe registered engineer.

Frequently Asked Questions (FAQs)

1.What does the Baxi 836 Combi Grundfos Pump do?
The pump circulates heated water through the boiler and heating system. As a result, it helps maintain consistent heating and hot water performance.

2.Is part number 7855245 correct for my Baxi boiler?
Yes. Part number 7855245 fits the Baxi 836 Combi boiler. Therefore, it provides a secure and accurate replacement when listed compatibility matches your model.

3.What is the purpose of the auto air vent included with the pump?
The auto air vent releases trapped air from the system. Consequently, it improves water circulation, reduces noise, and supports smooth boiler operation.

4.Is this Grundfos pump brand new or refurbished?
This pump is brand new. Because of this, it offers long-term reliability and consistent performance from first installation.

5.Can a faulty pump affect heating performance?
Yes. A failing pump can cause poor circulation, uneven heating, or boiler shutdowns. Replacing it restores correct flow and improves system efficiency.