
NaviLink Lite™ Wi-Fi Control
This add-on accessory will enable customers with smartphones and tablets to control temperatures remotely, access usage data and receive diagnostic notifications on all Navien products (NPE-2, NPN-U, NPN-E, NCB-H, NFC-H, NFB-H and NHB). Works with only one Navien unit via Wi-Fi connection.
Learn more about NaviLink Lite™ Wi-Fi Control

3" common vent collar kit
Required for cascade/common vent installations with NFB-C
Includes cascade cable (GXXX000546) and common vent collar damper.

Common Vent Collar Kit
Required for Cascade/common vent installations with NPE-2, NFC-H, NFB-H and NHB (NHB -110 & NHB-150 models) series units produced on or after September 15, 2016. Includes Cascade Cable (GXXX000546), VID jumper cable and common vent collar damper.

External Pump Connector for NPE and NPN Series
Allows all NPE, NPE-2 and NPN series models to control an external pump through the internal PCB.

HotButton™ Kit
Designed for NPE-A. NPN-U and NPN-E series. HotButton™ kit allows manual operation of a recirculation pump (ComfortFlow™ on NPE-A). Includes an add-on PCB, 1 push button and wall plate.
"Extra push button for use with HotButton and extra wall plate.
Extra wall plate for use with HotButton and extra HotButton push buttons.
Learn more about HotButton™ Kit

H₂Air™ Kit AHU Optimizer
Designed for NPE-A and NPE-A2 series. Allows for combined space heating and domestic hot water when paired with a recirculation pump (ComfortFlow™ on NPE-A and NPE-A2). Only works with AHU’s.
Learn more about H₂Air™ Kit AHU Optimizer

LonWorks gateway
Converts proprietary equipment data to LonWork protocol. Includes gateway, power supply, connectors and set up instructions.

Manifold, Primary for NFB Series
Navien’s NFB primary manifold kits are system matched for fast installations and maximum efficiency.

Manifold, Primary for NHB Series
Primary loop manifold designed to work on NHB models for fast, clean installations. Pump not included. Not for use with NHB-110 and NHB-150 cascade installations.

Manifold, Secondary
Secondary loop manifold designed to work on NCB-E, NFC, NFC-H, NHB, NFB and NFB-H models for fast, clean installations. Pump not included.

Modbus/BACnet gateway & power adaptor
Converts proprietary equipment data to BACnet MS/TP, BACnet/IP and Modbus TCP building automation protocols. Built-in WI-FI capability allows connection without accessing facility’s LAN network. Includes gateway, power supply, connectors and set up instructions.

NPE-A and NPE-A2 Plumb Easy 3-Valve Set (V2)
¾” Lead-Free isolation valve kit with relief valve – 3 valve set: Cold, Hot, Recirculation Return. Designed to work with NPE-A2 and NPE-A series units.

NaviCirc™
NaviCirc is a simple plumbing device that uses the existing hot and cold water lines to reduce the wait time for hot water at the faucet without the need for a dedicated recirculation return line.
NaviCirc Valve Kit includes the NaviCirc Valve (PFFW-SXX-001) and two 1/2" x 3/8" flexible hoses and adapters.
Learn more about NaviCirc™

NaviClean™
Highly recommended for protecting hydronic heating systems by capturing magnetite and iron oxides. Especially important in retrofit situations where older piping exists.
Learn more about NaviClean™

NaviLink® Wi-Fi Control
This add-on accessory will enable customers with smartphones and tablets to control temperatures remotely, access usage data and receive diagnostic notifications on all Navien products (NPE, NPE-2, NPN-U, NPN-E, NCB-E, NCB-H, NFC, NFC-H, NFB, NFB-H, NFB-C and NHB).
NaviLink cable. Allows you to expand your NaviLink control to a maximum of 3 channels for monitoring 3 banks of 8 units. Requires NaviLink Control.
Learn more about NaviLink® Wi-Fi Control

Neutralizer, Commercial
Designed to neutralize the condensate of up to: 16 units NPE, NCB, NFC, NFB and NHB); 11 units NFB-301C; 9 units NFB-399C
Replacement Media for Commercial Neutralizer.

Neutralizer, Light Commercial
Designed to neutralize the condensate of up to: 6 units NPE, NCB, NFC, NFB and NHB; 3 units NFB-301C; 2 units NFB-399C
Replacement Media for Light Commercial Neutralizer.

Outdoor Sensor & Wire
The outdoor sensor and wire is designed to allow outdoor reset functionality on the NCB-E, NCB-H, NFC, NFC-H, NHB, NFB and NFB-H series units.

Outdoor Vent Kit for NPE-2 Series
Designed for use with NPE-2 series units when installing your unit outside. Required for outdoor installations.

Parts Kit - Boiler
NHB series parts kit designed to help service in the field.
NFB series parts kit designed to help service in the field.
NFB-H series parts kit designed to help service in the field.
NFB-C series parts kit designed to help service in the field.

Parts Kit - Combi-boiler
CH series parts kit designed to help service in the field.
NFC series parts kit designed to help service in the field.
NCB and NCB-E series parts kit designed to help service in the field.
NCB-H series parts kit designed to help service in the field.
NFC-H series parts kit designed to help service in the field.

Parts Kit - Tankless water heater
NPE series parts kit designed to help service in the field.
CC, CR, NR & NP series parts kit designed to help service in the field.
NPE-2 series parts kit designed to help service in the field.
NPN series parts kit designed to help service in the field.

Pipe Cover for NPE-2 Series
Pipe cover designed to hide gas, water and power lines for an elegant, clean look. Works with NPE-2 series units. Use with 30012581A Plumb Easy Valve Kit.

Plumb Easy Valve Set (V2)
Navien Plumb Easy Valves (V2) are designed to provide ease of installation and operation as well as for quick maintenance on all tankless water heater models featuring a compact, versatile design that is easy to use.

Plumb Easy Valve Set 3/4” for Pipe Cover
3/4” lead free isolation valves with relief valve designed to work on NPE and NPE-2 series units. Allows for easy and quick servicing of DHW systems. Use with Pipe Cover.

Plumb Easy Valve Set, 1"
1" isolation valves without relief valve designed to work on NHB, NCB-E, NCB-H and NFC-H series units. Will not work with NCB-H and NFC-H Primary Stainless Steel Manifold (30026576B).

Pressure relief valves
75 PSI
150 PSI

Primary Manifold Kit for NCB-H and NFC-H
Primary loop stainless steel manifold designed to work on NCB-H and NFC-H models for fast, clean installations. This package includes new stainless steel manifold, isolation valves with gaskets, PRV/air vent/LWCO adapter tree, air vent, threaded connection adapter with clip and LWCO plug.

RAL Adapter
RAL Adapter includes PRV/air vent/LWCO adapter tree, air vent, threaded connection adapter with clip and LWCO plug.

Ready-Link® Communication Cable
Required to cascade and common vent NPE, NPE-2, NPN, NCB-E, NCB-H, NFC, NFC-H, NFB, NFB-H, NFB-C series and NHB-110 & NHB-150 models.

Ready-Link® Manifold System for NPE and NPE-2 Series
This innovative accessory will make cascading up to 16 units in 2 banks of 8 easy for emergency same day replacements. The kits are configures in 2, 3, and 4 side-by-side and 2, 4 back- to-back allowing for up to 16 units in 30 configurations. Each kit includes: * 3/4” Service Valves with PRV * 3/4” NPT Ball Valve * 2” Copper End Cap * 2-1/8” Strut Clamp * 3/4” x 24” SS Corrugated Flex Connector * 3/4” x 18” SS Corrugated Flex Connector * 1-7/8” OD Strut Clamp * 3/4” X 3/4” Adapter * 1-1/2” Gas Union * 2” Copper Coupling * 1-5/8” x 18” Strut Channel (14ga) * 3/4” x 30” Gas Flex Connector * 1-1/2” FPT Galvanized Iron End Cap * Hardware Kit
2 back-to-back
2 side-by-side
3 side-by-side
4 back-to-back
4 side-by-side
Learn more about Ready-Link® Manifold System for NPE and NPE-2 Series

Ready-Link® Rack (V3)
Ready-Link® Rack (V3) Base. The free standing rack system is designed for infield assembly for indoor and outdoor installations. Designed to work with NPE, NPE-2, NPN, NCB-E, NCB-H, NFC, NFC-H, NHB, NFB and NFB-H series units. Base rack allows installation for up to 2 units back to back.
Ready-Link® Rack (V3) Add-on. The add-on rack is designed to expand the base rack system allowing up to 16 units back to back on a free standing rack system. Designed to work with NPE, NPE-2, NPN, NCB-E, NCB-H, NFC, NFC-H, NHB, NFB and NFB-H series units for infield assembly. Approved for indoor and outdoor installations.

Ready‑Link® Commercial Rack System
Ready-Link® Commercial Boiler Rack System Base. The free standing rack system is designed, with pipe support brackets, for infield assembly and approved for indoor installations. Designed to work with NFB-C series units.
Ready-Link® Commercial Boiler Rack System Add-on. The add-on rack is designed, with a pipe support bracket, to expand the base rack system allowing up to 16 units on a free standing rack system. Designed to work with NFB-C series units for infield assembly and approved for indoor installations

Remote Controller
Designed for use with NPE-2 and NPN series tankless water heaters. Allows users to adjust temperature, set operational settings, and display operational info. Allows users to adjust temperature and set the timer for the recirculation activation on NPE-A2 models.

Residential Neutralizer (V2)
Residential condensate neutralizer for NPE-2, NCB-H, NFC-H, NHB and NFB-H units designed to neutralize the condensate of one unit.
Replacement media for residential neutralizer.

SmartZone+™
Zone pump controller designed to work with the NCB, NFC, NFB, NFB-C and NHB series allowing control from 2 to 6 zone pumps.
2 Zones
3 Zones
4 Zones
6 Zones

Universal temperature sensor
Designed to sense supply, return or tank temperature of your hydronic heating system. Works with NFC, NFC-H, NHB, NFB, NFB-H and NFB-C series boilers.

Wall Flange and Vent Terminate Kit
Wall flange designed to work on 2” intake and exhaust pipe for a clean installation look in location where the pipe goes through the wall.
Wall flange designed to work on 3” intake and exhaust pipe for a clean installation look in location where the pipe goes through the wall.