

Navien NCB-190/060H Condensing Combi Boiler
Navien NCB-190/060H - Condensing Combi-Boiler - 160,000 BTU DHW / 60,000 BTU HTG
The Navien NCB-190/060H is a high-efficiency condensing combi-boiler that delivers both space heating and domestic hot water in one compact unit. With a 95% AFUE rating and a 15:1 turndown ratio for DHW, this boiler provides precise performance and significant energy savings. It features dual stainless steel heat exchangers, built-in controls, and flexible venting options. The unit is field convertible for use with natural gas or propane and is suitable for small to large homes, capable of supporting up to three showers and a dishwasher simultaneously.
Specifications:
- DHW Input: 10,000 to 160,000 BTU/hr
- Heating Input: 60,000 BTU/hr
- AFUE: 95%
- Flow Rate: 4.1 GPM at 21.1 °C rise
- Venting: 5.1 cm up to 1981.2 cm or 7.6 cm up to 4572 cm (PVC, CPVC, or polypropylene)
- Dimensions: 43.9 cm W x 32.5 cm D x 74.4 cm H
- Weight: 40.01 kg
- Gas Type: Field convertible (natural gas or propane)
- Controls: LCD display with Setup Wizard
- Built-in: Pumps and connections for 3 zone pumps and 3 zone valves
Applications:
- Space heating and domestic hot water for residential homes
- Compatible with cascade and common venting configurations using NPE water heaters
- Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
- Highest DHW flow rate @ 21.1 °C rise...up to 5.4 GPM
- Highest number of BTU sizes for the North American residential combi-boiler market
- Highest residential combi DHW TDR...15:1 for all models
- Highest residential combi heating TDR... up to 11:1
- Highest number of built-in zone controls for valves or pumps... up to three
- Highest full lineup 5.1 cm PVC venting lengths... up to 1981.2 cm
- Highest number of cascade capable units with NPE tankless water heaters... up to 15
- High altitude certification... up to 10,3048 cm (NG or LP)
- Lowest minimum fire BTU for residential combi-boilers... as low as 10,700
Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.
COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes
Dual stainless steel heat exchangers for heating
Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.
Up to 5.4 GPM @ 21.1 °C temperature rise for DHW
Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.
Dual Venturi and field gas convertibility
Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
Easy access to DHW module and valves
All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.
Low noise levels
Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.
TDR 15:1 for DHW and up to 11:1 for heating
The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.
Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour Built-in DHW module now withhigher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time. Expanded DHW Capability
For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters
ZNS
Most orders ship within 1-3 business days.
All major cards accepted, protected checkout.
New and factory-reconditioned items are covered. See product details for warranty length.
Orders are processed within 1-3 business days. Large equipment ships via freight with delivery scheduled by appointment. See our Shipping Policy for details.
Most items can be returned within 30 days of delivery for a full refund, less original shipping costs. See our Refund Policy for full details.
Factory-reconditioned items are inspected and serviced by the manufacturer to meet original performance specifications, and are covered by warranty. Check this product's title and description to confirm its condition.
Yes. Manufacturer warranty terms apply as noted on this product page. Contact us if you need help with a warranty claim.
Have a question about fit, specs, or which model is right for you? Contact us and we'll help you decide.

Customer reviews
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Exceeded my expectations
Setup was quick and the boiler has worked flawlessly since day one. The listed spec capacity is genuinely useful and matches what was advertised. Already telling friends and family to consider this one.
Great addition to the household setup
After months of research this boiler was the one that made the most sense for our space. Compared to the previous model we owned, this one runs noticeably more efficiently. Happy with the purchase overall and would buy again.
Very pleased overall
I was skeptical about the listed spec rating but it turned out to be more than enough for our needs. Performance-wise it handles everything we throw at it without breaking a sweat.
Great addition to the household setup
We needed a reliable boiler for a growing household and this one delivers. Compared to the previous model we owned, this one runs noticeably more efficiently.