Navien
Navien Air Nozzle D20 20043449A
Air nozzle, D20, for Navien LCB 700 combi, regular and system boilers.
At a glance
- Part type: air nozzle
- Appliance family: LCB 700
£6.13
£5.11 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 air nozzle is a Navien component for the LCB 700 range of gas boilers. It is designated D20 and forms part of the appliance's air path. It is listed for use across the LCB 700 combi, regular and system variants.
Signs this part needs replacing
- Combustion readings drifting outside the expected range for the appliance
- Unstable or noisy flame at the burner
- Repeated ignition or flame supervision faults
- Soot or discolouration around the burner area
- Visible damage, blockage or distortion at the nozzle
Before you order
- Confirm the appliance is an LCB 700 and identify whether it is combi, regular or system
- Check whether the installation is internal or external
- Verify the model and serial number against the fitment list above
- Match the part number 20043449A against the component being removed
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — |
Showing 10 of 12 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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