Description
Navien NCB-190/080HCondensing Combi-Boiler · 160,000 BTU DHW / 80,000 BTU Heating
A high-efficiency condensing combi-boiler that delivers both hydronic space heating and domestic hot water from a single, compact wall-hung unit, providing consistent warmth and efficiency for a wide range of home sizes.
Constructed with dual stainless steel heat exchangers for long-term durability and corrosion resistance, the NCB-190/080H is equipped with smart control features, built-in pumps, and field conversion capability between natural gas and propane. It supports cascading and common venting with NPE water heaters.
Technical specification
| Efficiency | 95% AFUE |
|---|---|
| Heating input | Up to 80,000 BTU/hr |
| DHW input | Up to 160,000 BTU/hr |
| DHW turndown ratio | 15:1 |
| DHW flow rate | 4.3 GPM at 37°C rise |
| Heat exchangers | Dual stainless steel |
| Controls | Smart control with Setup Wizard and backlit LCD |
| Zone connections | Built-in zone pumps and zone valve terminals |
| Fuel | Field convertible — natural gas or propane |
| Design | Compact wall-hung |
| Venting | Flexible 2″ or 3″ options |
| Cascading | Compatible with cascading and common venting with NPE water heaters |
Applications
Whole-House Heating
Whole-house hydronic space heating.
On-Demand DHW
On-demand domestic hot water.
NG or LP Systems
Homes using natural gas or propane.
New Construction / Replacement
New construction or system replacements.
Compact Wall-Mounted
Residences requiring compact, wall-mounted heating solutions.
Low-Maintenance Efficiency
Installations requiring energy-efficient and low-maintenance operation.
Key features
- 95% AFUE energy efficiency
- 160,000 BTU/hr DHW input and 80,000 BTU/hr heating input
- Dual stainless steel heat exchangers
- 15:1 DHW turndown ratio
- Smart control with Setup Wizard and backlit LCD
- Built-in zone pumps and zone valve terminals
- Compatible with cascading and common venting setups
- Field convertible for natural gas or propane
- Compact wall-hung design
- Flexible 2″ or 3″ venting options
- Dual Venturi system with included orifice conversion kit for easy field gas convertibility
- Quiet running for installation in or near media rooms, recreation rooms or any living area
Navien NCB-190/080H combi-boiler. Follow the installation manual, local gas and plumbing codes, and manufacturer instructions.
