Navien Tankless Water Heater NPE-240A2
Data updated:
If your repair quote exceeds this, replace the unit.
Common Failure Points
- Flow sensor
- Ignition system
- Heat exchanger
- Control board
- Fan assembly
Expert Verdict
A standard tankless water heater costs roughly $1,960 new. Because they typically last 20 years, depreciation accelerates after year 10. Major component failures (like motors or compressors) usually signal the end of the unit's economic life.