Navien
Navien Main Heat Exchanger 30018817A
Main heat exchanger for Navien NPE-AWE CE-24A and NPE-SWE CE-24S boilers, part number 30018817A.
At a glance
- Part type: main heat exchanger
£665.05
£554.21 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 Main Heat Exchanger, part number 30018817A, is the primary heat transfer component fitted to Navien NPE-AWE and NPE-SWE boilers. It transfers heat from the combustion side into the water circuit. This exchanger is listed for the NPE-AWE CE-24A and NPE-SWE CE-24S models.
Signs this part needs replacing
- Water weeping from the exchanger body or its connections
- Kettling, banging or gurgling noises during firing
- Repeated overheat lockouts or heat exchanger related fault codes
- Reduced heat output or unstable temperatures at the outlets
- Visible scale, corrosion or soot on the exchanger surface
Before you order
- Confirm the appliance model and serial number against the fitment list above
- Check the part number on the existing exchanger matches 30018817A
- Isolate the gas, water and electrical supplies before removal
- Inspect the system for debris or scale that may have caused the original failure
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NPE-AWE CE-24A - (Serial Number 5093) | — | — | — | |
| NAVIEN NPE-AWE CE-24A - (Serial Number 5093) | — | — | — | |
| NAVIEN NPE-SWE CE-24S - (Serial Number 5094) | — | — | — | |
| NAVIEN NPE-SWE CE-24S - (Serial Number 5094) | — | — | — |
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.