Glow-worm
Glow-worm Ultracom 30CXI heat exchanger 801837
Heat exchanger for the Glow-worm 30CXI and Ultracom 24CX/24CXI/30CX/30CXI boilers.
At a glance
- Also known as 1333327
- Have the replacement fitted by a Gas Safe registered engineer
Showing prices
£864.66
£720.55 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The 801837 is the heat exchanger fitted to Glow-worm's 30CXI and Ultracom 24CX, 24CXI, 30CX and 30CXI combi boilers. It transfers the heat produced by the burner into the water circulating through the appliance.
Signs this part needs replacing
- Water leaking from around the heat exchanger
- Reduced or fluctuating hot water/heating output
- Kettling or banging noises when the boiler fires
- Lockouts linked to overheat or flow sensors
Before you order
- Confirm your exact model against the fits list
- Match the part number printed on your existing heat exchanger
- Isolate gas, electricity and water before removal
- Have the replacement fitted by a Gas Safe registered engineer
Compliance
| Barcode / EAN | 5037985029721 |
|---|---|
| Alternative numbers | 1333327 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM GLOWWORM GW 30CXI | — | — | — | |
| GLOWWORM GLOWWORM ULTRACOM 30CX | — | — | — | |
| GLOWWORM GLOWWORM ULTRACOM 30CXi | — | — | — | |
| GLOWWORM GW 30CXi | 47-047-24 | 47-047-24 | — | — |
| GLOWWORM ULTRACOM 30CX | 47-019-07 | 47-019-07 | — | — |
| GLOWWORM ULTRACOM 30CXi | 47-019-02 | 47-019-02 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.