Description

Baxi 428 Combi Expansion Vessel – 7 L | Fits Baxi 224, 228, 424, 428 Combi Boilers

The Genuine Baxi 7661749 Expansion Vessel Assembly (7L) is an original manufacturer spare designed to maintain correct system pressure within compatible Baxi combi boilers.

The expansion vessel absorbs pressure increases caused by heated water expansion. When the internal diaphragm fails, common symptoms include:

• Boiler losing pressure regularly

• Pressure rising quickly when heating is on

• Water discharging from the safety valve

• Repeated need to repressurise

Replacing the expansion vessel restores correct pressure regulation and prevents further stress on internal components.

Manufactured by Baxi, this genuine 7-litre vessel ensures perfect fitment and long-term reliability.

Compatible Boilers

Baxi Combi Series

• Baxi 224 Combi (GC No. 47-077-21)

• Baxi 228 Combi (GC No. 47-077-22)

• Baxi 424 Combi (GC No. 47-077-23)

• Baxi 428 Combi (GC No. 47-077-24)

If you’re looking for  Baxi Expansion Vessel, follow the link provided.

Why Choose This Product?

This Baxi 428 Combi expansion vessel assembly delivers reliable pressure control, and it helps your boiler run smoothly during every heating cycle. It reduces unwanted pressure spikes and protects the system from performance issues. Moreover, the refurbished option offers a cost-effective and environmentally friendly solution, while the brand new option provides factory-level reliability. Both choices undergo careful testing and meet performance expectations, so your boiler operates with improved efficiency and stability.

Delivery and Return

Orders placed before 1 PM leave the warehouse the same working day, and you can choose standard or next-day delivery at checkout. Additionally, you may return the item within 30 days if it stays unused and remains in its original condition. For safety and correct installation, always ask a Gas Safe registered engineer to fit the part.

Frequently Asked Questions (FAQs)

1. What does the Baxi 428 Combi Expansion Vessel Assembly do?
The expansion vessel assembly controls pressure inside the boiler, and it protects the system during heating cycles. It absorbs pressure changes, and it keeps the boiler running smoothly.

2. Is part number 7661749 the correct match for my boiler?
Yes. Part number 7661749 fits the Baxi 224, 228, 424, and 428 Combi models. Therefore, you can install it with confidence if your boiler appears in the compatibility list.

3. Does a faulty expansion vessel cause pressure problems?
Yes. A faulty vessel often causes rising pressure, frequent lockouts, or water discharge from the pressure relief valve. Replacing it solves these issues and improves system stability.

4. Can I choose between brand new and refurbished versions?
Yes. You can select either option. The refurbished version offers a cost-effective solution, while the brand new option provides factory-fresh performance. Both go through testing for reliable operation.

5. Does this part come with a warranty?
Yes. Both new and refurbished versions include a 12-month warranty, and this gives you peace of mind throughout the year.