{"id":15587,"date":"2026-08-11T17:19:00","date_gmt":"2026-08-11T17:19:00","guid":{"rendered":"https:\/\/beautyinsalon.com\/index.php\/product\/ncb-250-150h-condensing-combi-boiler-250000-btu-dhw-210000-btu-htg\/"},"modified":"2026-08-11T17:19:00","modified_gmt":"2026-08-11T17:19:00","slug":"ncb-250-150h-condensing-combi-boiler-250000-btu-dhw-210000-btu-htg","status":"publish","type":"product","link":"https:\/\/beautyinsalon.com\/index.php\/product\/ncb-250-150h-condensing-combi-boiler-250000-btu-dhw-210000-btu-htg\/","title":{"rendered":"NCB-250\/150H &#8211; Condensing Combi-Boiler &#8211; 250,000 BTU DHW \/ 210,000 BTU HTG"},"content":{"rendered":"<p><strong>Navien\u00a0NCB-250\/150H &#8211; Condensing Combi-Boiler &#8211; 250,000 BTU DHW \/ 210,000 BTU HTG<\/strong><\/p>\n<p data-start=\"100\" data-end=\"551\">The Navien NCB-250\/150H is a 95% AFUE condensing combi-boiler that combines powerful space heating and on-demand domestic hot water in a single wall-hung unit. With a maximum input of 150,000 BTU\/hr and a net AHRI rating of 120,000 BTU\/hr, this unit delivers efficient performance for larger residential applications. It offers a 11.1:1 turndown ratio for heating and a 15:1 ratio for hot water, providing responsive modulation based on system demand.<\/p>\n<p data-start=\"553\" data-end=\"827\">The NCB-250\/150H is field convertible from natural gas to propane and supports a range of venting materials including PVC, CPVC, polypropylene, and stainless steel. It also features compatibility with Navien\u2019s NaviLink smart home controller for remote access and monitoring.<\/p>\n<p data-start=\"829\" data-end=\"1253\"><strong>Features:<\/strong><\/p>\n<ul>\n<li data-start=\"829\" data-end=\"1253\">95% AFUE high-efficiency rating<\/li>\n<li data-start=\"829\" data-end=\"1253\">150,000 BTU\/hr heating input<\/li>\n<li data-start=\"829\" data-end=\"1253\">120,000 BTU\/hr net AHRI rating<\/li>\n<li data-start=\"829\" data-end=\"1253\">11.1:1 turndown ratio for space heating<\/li>\n<li data-start=\"829\" data-end=\"1253\">15:1 turndown ratio for domestic hot water<\/li>\n<li data-start=\"829\" data-end=\"1253\">Field convertible between natural gas and propane<\/li>\n<li data-start=\"829\" data-end=\"1253\">Smart controls with NaviLink compatibility<\/li>\n<li data-start=\"829\" data-end=\"1253\">Energy Star certified<\/li>\n<li data-start=\"829\" data-end=\"1253\">Compact wall-mounted design<\/li>\n<li data-start=\"829\" data-end=\"1253\">Compatible with 2&#8243; or 3&#8243; venting (PVC, CPVC, polypropylene, stainless steel)<\/li>\n<\/ul>\n<p data-start=\"1255\" data-end=\"1518\" data-is-last-node=\"\" data-is-only-node=\"\"><strong>Applications:<\/strong><\/p>\n<ul>\n<li data-start=\"1255\" data-end=\"1518\">Whole-home space heating and domestic hot water<\/li>\n<li data-start=\"1255\" data-end=\"1518\">Medium to large residential homes<\/li>\n<li data-start=\"1255\" data-end=\"1518\">Indoor installations with venting flexibility<\/li>\n<li data-start=\"1255\" data-end=\"1518\">Natural gas or propane systems<\/li>\n<li data-start=\"1255\" data-end=\"1518\">Retrofits and new construction<\/li>\n<li data-start=\"1255\" data-end=\"1518\">Smart home integration with NaviLink controller<\/li>\n<\/ul>\n<p>\u00a0<\/p>\n<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/zi6ilYzhDi8\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2 style=\"text-align: center;\"><strong><span class=\"color--brand-secondary\" style=\"color: #ff6600;\">Aim\u00a0high with Navien&#8230;<\/span><\/strong><\/h2>\n<h2>High efficiency,\u00a0High output, High performance, all in one compact combi<\/h2>\n<ul>\n<li>Highest\u00a0DHW maximum BTU\u2019s in residential combi-boilers&#8230;up to 210,000 per hour<\/li>\n<li>Highest\u00a0DHW flow rate @ 70\u00b0F rise&#8230;up to 5.4 GPM<\/li>\n<li>Highest\u00a0number of BTU sizes for the North American residential combi-boiler market<\/li>\n<li>Highest\u00a0residential combi DHW TDR&#8230;15:1 for all models<\/li>\n<li>Highest\u00a0residential combi heating TDR&#8230; up to 11:1<\/li>\n<li>Highest\u00a0number of built-in zone controls for valves\u00a0or pumps&#8230; up to three<\/li>\n<li>Highest\u00a0full lineup 2&#8243; PVC venting lengths&#8230; up to 65 feet<\/li>\n<li>Highest\u00a0number of cascade capable units with NPE tankless water heaters&#8230; up to 15<\/li>\n<li>High altitude certification&#8230;\u00a0up to 10,100\u00a0feet (NG\u00a0or LP)<\/li>\n<li>Lowest minimum fire BTU\u00a0for residential combi-boilers&#8230; as low as 10,700<\/li>\n<\/ul>\n<h2 style=\"text-align: center;\">\n<strong><span class=\"color--brand-secondary\" style=\"color: #ff6600;\">New\u00a0Navien NCB-H&#8230;<\/span><\/strong>the complete combi package and no comprimises<\/h2>\n<p>Navien&#8217;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.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-house.png?v=1634582995\" alt=\"Navien NCB-H Full House\" width=\"800\" height=\"435\"><\/p>\n<h2 style=\"text-align: center;\">\n<strong><span class=\"color--brand-secondary\" style=\"color: #ff6600;\">COMPARE\u00a0<\/span><\/strong>these advantages and see why NCB-H combis are the right fit for small and large homes<\/h2>\n<table style=\"text-align: left; width: 100%;\" border=\"0\" cellspacing=\"5\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td style=\"vertical-align: top; width: 33%;\">\n<p><img decoding=\"async\" title=\"Dual stainless steel heat exchangers for heating\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-feature-dual-HeatExcher.jpg?v=1634583684\" alt=\"Dual stainless steel heat exchangers for heating\"><br \/> <strong>Dual stainless steel heat exchangers for heating<\/strong><\/p>\n<p>Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.<\/p>\n<\/td>\n<td style=\"vertical-align: top; width: 33%;\">\n<p><img decoding=\"async\" title=\"Separate stainless steel flat plate\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NFC-feature-flat-plate.jpg?v=1634583684\" alt=\"Separate stainless steel flat plate\"><br \/> <strong>Up to 5.4 GPM @ 70\u00b0F temperature rise for DHW<\/strong><\/p>\n<p>Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.<\/p>\n<\/td>\n<td style=\"vertical-align: top; width: 33%;\">\n<p><img decoding=\"async\" title=\"Dual Venturi System\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-feature-dual-venturi.jpg?v=1634583683\" alt=\"Dual Venturi System\"><br \/> <strong>Dual Venturi and field gas convertibility<\/strong><\/p>\n<p>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.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"vertical-align: top; width: 33%;\">\n<p><img decoding=\"async\" title=\"DHW Module\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-feature-access-DHW.jpg?v=1634583684\" alt=\"DHW Module\"><br \/> <strong>Easy access to DHW module and valves<\/strong><\/p>\n<p>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.<\/p>\n<\/td>\n<td style=\"vertical-align: top; width: 33px;\">\n<p><img decoding=\"async\" title=\"Low Noise Levels\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-feature-LowNoise.jpg?v=1634583684\" alt=\"Low Noise Levels\"><br \/> <strong>Low noise levels<\/strong><\/p>\n<p>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.<\/p>\n<\/td>\n<td style=\"vertical-align: top; width: 33%;\">\n<p><img decoding=\"async\" title=\"Gas Flow Control System\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/10-1-ratio-NFB-2.jpg?v=1634583683\" alt=\"Gas Flow Control System\"><br \/> <strong>TDR 15:1 for DHW and up to 11:1 for heating<\/strong><\/p>\n<p>The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0<\/p>\n<table style=\"text-align: left; width: 100%; background-color: #ffffff; margin-left: auto; margin-right: auto;\" border=\"0\" cellspacing=\"2\" cellpadding=\"2\">\n<tbody>\n<tr>\n<td style=\"vertical-align: middle; text-align: center;\">\n<h2><strong>Dual Stainless Steel<\/strong><\/h2>\n<h2><strong> Heat Exchanger<\/strong><\/h2>\n<h2>Designed for exceptional<\/h2>\n<h2>heating performance and longevity<\/h2>\n<h2 style=\"text-align: center;\"><strong><span style=\"color: #ff6600;\">Heating up to<\/span><\/strong><\/h2>\n<h2 style=\"text-align: center;\"><strong><span style=\"color: #ff6600;\"> 150,000<\/span><\/strong><\/h2>\n<h2 style=\"text-align: center;\"><strong><span style=\"color: #ff6600;\"> BTUs per hour<\/span><\/strong><\/h2>\n<\/td>\n<td style=\"vertical-align: top;\"><img decoding=\"async\" style=\"width: 300px;\" title=\"Dual Stainless Steel Heat Exchanger\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/heatexchanger-3d-NCB-H.png?v=1634582995\" alt=\"Dual Stainless Steel Heat Exchanger\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\">\u00a0<\/p>\n<h2 style=\"text-align: center;\">\n<strong>Built-in DHW module now with<\/strong><br \/><strong><span style=\"color: #ff6600;\">higher performance<\/span><\/strong><br \/>Navien\u2019s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-DHW-module.png?v=1634582995\" alt=\"NCB-H Module\" width=\"800\" height=\"603\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/H-series-heat-plate.png?v=1634582995\" alt=\"DHW up to 210,000 BTUs per hour\" width=\"800\" height=\"300\"><\/p>\n<p style=\"text-align: center;\">\u00a0<\/p>\n<h2 style=\"text-align: center;\"><strong>Expanded DHW Capability<\/strong><\/h2>\n<p style=\"text-align: center;\">For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/NCB-H-cascade-units.png?v=1634582995\" alt=\"Cascading DHW Capabilities\" width=\"800\" height=\"769\"><\/p>\n<p>\u00a0<\/p>\n<hr>\n<p style=\"text-align: right;\"><sup><span style=\"color: #999999;\">ZCS<\/span><\/sup><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Navien\u00a0NCB-250\/150H &#8211; Condensing Combi-Boiler &#8211; 250,000 BTU DHW \/ 210,000 BTU HTG The Navien NCB-250\/150H is a 95% AFUE condensing<\/p>\n","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[70],"product_tag":[71,86,74,75,76,77,78,79,80,81,82],"class_list":["post-15587","product","type-product","status-publish","product_cat-plumbing-water-heaters-tankless-water-heaters","product_tag-afue-95","product_tag-btu-200","product_tag-category-hydronics","product_tag-category-water-heaters","product_tag-combi-boilers","product_tag-conversion-kit-included","product_tag-liquid-propane","product_tag-natural-gas","product_tag-navien","product_tag-over-1500","product_tag-series-ncb","first","outofstock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product\/15587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/comments?post=15587"}],"version-history":[{"count":0,"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product\/15587\/revisions"}],"wp:attachment":[{"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/media?parent=15587"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=15587"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=15587"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/beautyinsalon.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=15587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}