How old is my Navien unit?
Navien is part of Navien / KD Navien. 1 serial format sourced across boiler, tankless water heater.
Serial number decoder for Navien
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 9545J1152752044
- Navien boiler serial numbers in the era not stated format encode the year as digits 6-7 (YY) and the month as position 8 (table below) (source: building-center.org).
- Example: serial 9545J1152752044 decodes to May 2011.
- Navien's official lookup at navieninc.com returns general warranty terms.
Decoder pages by product
Format eras
- era not stated VERIFIED
####A##########Tankless Water Heater, Boiler
Official lookup: the authority
Navien: no online serial lookup (general warranty terms).
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.