Description
Baxi 428 Combi Expansion Vessel – 7 L | Fits Baxi 224, 228, 424, 428 Combi Boilers
The Baxi 428 Combi Expansion Vessel Assembly 7L 7661749 supports stable pressure control inside your heating system. This expansion vessel assembly manages pressure changes during heating cycles and prevents unwanted system strain. The part number 7661749 ensures a secure fit for the Baxi 428 Combi. You can choose a brand new or refurbished option, and both deliver long-lasting and dependable performance.
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 a Baxi Neta-tec 7L Expansion Vessel 720759301 or any other different 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.













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