Navien
Navien Pipe Cold Water Inlet 30029239A
Cold water inlet pipe, part 30029239A, for the Navien NCB300-37K Combi boiler.
At a glance
- Part type: pipe cold water inlet
- Appliance family: NCB300-37K Combi
£50.52
£42.10 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The pipe cold water inlet is a Navien component (part number 30029239A) used on the NCB300-37K Combi boiler. It forms the cold water entry path into the appliance, feeding the domestic hot water side of the combi. It is a direct fitment for the model listed below.
Signs this part needs replacing
- Visible water weeping or damp staining around the cold water inlet connection
- Corrosion, pitting or green/white scale build-up on the pipe surface
- Reduced cold water flow into the boiler compared with normal operation
- Hairline cracks or deformation at the pipe ends or bends
- Frost damage or a joint that will not seal after refitting
Before you order
- Confirm the appliance model is the Navien NCB300-37K Combi
- Check the serial number against the manufacturer's parts list for your unit
- Inspect the pipe connections and seals so any associated parts can be ordered at the same time
- Verify the part number 30029239A matches the item you are removing
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — |
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.
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