4.5
Based on 1790 reviews
Based on 1790 reviews
£59.99
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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.
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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.

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Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency. |
Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry. |
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. |
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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. |
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. |
The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW. |
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Dual Stainless SteelHeat ExchangerDesigned for exceptionalheating performance and longevityHeating up to150,000BTUs per hour |
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For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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Based on 1,790 reviews