Navien NPE-A / NPE-S Code E060
Dual venturi fault. A fault in the dual venturi, the assembly that meters the air and gas mixture going to the burner. Navien's instruction is to contact technical support; there is no owner-side check.
Call a proThe verdict
Call a licensed plumber
Air-gas mixing hardware. This is the expensive end of the Navien list — nothing about it has a homeowner version.
Typical cost: $200–$1,100
US estimate for parts and labor. Prices vary by region and by who does the work — see how we estimate costs.
What the manual says
The meaning above is transcribed from the manufacturer's diagnostic documentation for the NPE-A / NPE-S — not averaged across the brand.
Source: Navien NPE Operation Manual (NPE-A / NPE-S) (p. 16), read Aug 2026 — the manufacturer's own documentation for this exact series.
What you can safely check
Before anything else: if you smell gas, stop here, leave, and call your gas utility.
- If you smell gas, leave the building and call your gas utility from outside.
- Book a licensed professional.
Code E060 on other Navien series
The same code number can mean something different on another series — make sure you're reading the page for your exact unit: