Description
Glowworm Ultracom 18 HXI SXI Main Heat Exchanger
The Glowworm Ultracom HXI SXI Main Heat Exchanger 801621 is an essential component of a boiler system that transfers heat from the burner to the water. This heat exchanger is made from durable materials to ensure a long-lasting performance. It is compatible with a range of Glowworm boiler models, including Betacom3, Flexicom, and Ultracom2. The compact design of the heat exchanger allows for easy installation and maintenance. When properly functioning, the Glowworm Main Heat Exchanger 801621 can help improve the energy efficiency of the boiler system and reduce energy bills.
This part fits the following boilers:
| Fits Appliance(s) | GC No. |
| Glowworm 24CXI | 47-047-23 |
| Glowworm 12HXI | 41-047-73 |
| Glowworm 15HXI | 41-047-74 |
| Glowworm 18HXI | 41-047-63 |
| Glowworm 18sxi | 41-047-72 |
| Ultracom 24 CX | 47-019-06 |
| Ultracom 30 CX | 47-019-07 |
| Ultracom 24CXI | 47-019-01 |
| Ultracom 12 HXI | 41-019-01 |
| Ultracom 15 HXI | 41-019-02 |
| Ultracom 18 HXI | 41-019-03 |
| Ultracom 18 SXI | 41-019-07 |
| Ultracom 30 SXI | 41-019-08 |
Please note: Before placing your order you must check your part matches the Manufacturer Part Number stated above.
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     Prices: Please note all prices are inclusive of VAT.
At Heating and catering parts,
We certainly strive to provide the best possible customer experience. Consequently, we understand that sometimes a product may not meet your expectations or requirements. That is why we offer a comprehensive 30-day return policy to ensure your satisfaction. Please read our full Return Policy
We appreciate you buying from our store. Usually, If your order is received by 1:00 p.m. EST (Monday–Friday), we will ship the item the same day. You can count on us to deliver quickly and safely. In other words, we take pride in our prompt and trustworthy service and will do everything we can to ensure the safe arrival of your package. Please note that weekends are not included in our next-day delivery guarantee. Delivery for orders placed on Fridays (the next day) is on the following Monday. At the same time select the Saturday delivery option at checkout if you’d like your purchases delivered on a weekend day.
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Frequently Asked Questions
1. What Glowworm boilers is the 801621 Main Heat Exchanger compatible with?
The Glowworm 801621 Main Heat Exchanger fits multiple models including Glowworm 12HXI, 15HXI, 18HXI, 18SXI, 24CXI, 24CX, 30CX, Ultracom 12 HXI, 15 HXI, 18 HXI, 18 SXI, and 30 SXI. Always confirm the manufacturer part number to ensure proper fit.
2. What is the purpose of the Glowworm 801621 Main Heat Exchanger?
This heat exchanger transfers heat from the boiler burner to the water, ensuring efficient heating throughout the system. A properly functioning heat exchanger helps maintain consistent water temperatures and reduces energy waste.
3. Is the Glowworm Main Heat Exchanger durable?
Yes, the 801621 heat exchanger is made from high-quality materials designed for long-lasting performance and reliable operation within compatible Glowworm boilers.
4. Can I install the Glowworm 801621 Heat Exchanger myself?
The compact design allows for relatively straightforward installation, but it is recommended that installation is carried out by a qualified heating engineer to ensure safety and optimal performance.
5. How does the Glowworm Main Heat Exchanger affect boiler efficiency?
A fully functional heat exchanger improves the boiler’s energy transfer efficiency, which can help reduce energy consumption and lower heating bills. Regular maintenance ensures that the system continues to operate at peak efficiency.






