Navien
Navien Exhaust Duct 30021130A
Exhaust duct 30021130A for Navien LCB 700 Regular and System boilers, internal and external 21KW to 36KW models.
At a glance
- Appliance family: LCB 700
£75.41
£62.84 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 Navien exhaust duct, part 30021130A, is a flue component used on LCB 700 boilers. It forms part of the route that carries combustion products from the appliance to the outside termination point. It is listed for both Regular and System variants across the 21KW, 28KW and 36KW outputs.
Signs this part needs replacing
- Visible corrosion, perforation or cracking on the duct wall
- Condensate staining, drips or water marks around the duct joints
- Discolouration or heat damage on the duct surface
- Flue gas smell or combustion readings drifting outside tolerance
- Physical damage to the duct caused during servicing or handling
Before you order
- Confirm the appliance model and serial number against the fit list above
- Check the part number on the existing duct before ordering
- Inspect adjacent seals, gaskets and fixings while access is available
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 28KW (Serial Number 1478) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 28KW (Serial Number 1478) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 28KW (Serial Number 1477) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 28KW (Serial Number 1477) | — | — | — |
Showing 10 of 24 compatible appliances.
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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