{"product_id":"navien-nfb-c-series-399k-btu-high-efficiency-condensing-h-8b0f82b","title":"Navien NFB-C Series 399K BTU – High Efficiency – Condensing Heating Boiler","description":"\u003cp\u003eThe Navien NFB-399C is a wall-hung condensing heating boiler rated at 399,000 BTU\/h with 97.5% AFUE, built for light commercial and large residential hydronic systems. Its stainless steel fire tube heat exchanger and 9.6 gallon water capacity deliver stable supply temperatures for baseboard, panel radiator and radiant floor loops, while the direct-vent sealed combustion design allows flexible PVC, CPVC or polypropylene venting through a sidewall or roof. The unit runs on natural gas and converts to propane in the field, operates on standard 120V power and is ASME H stamped, CSA 4.9 certified and ENERGY STAR qualified. Cascade control lets multiple NFB-C boilers stage together for larger plants, and the compact 25-1\/10 in. wide by 32-4\/5 in. tall cabinet frees valuable mechanical room floor space. Professional installation by a licensed heating contractor is required.\u003c\/p\u003e\u003ch3\u003eAt a glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e399,000 BTU\/h input with 97.5% AFUE condensing performance\u003c\/li\u003e\n\u003cli\u003eStainless steel fire tube heat exchanger, 9.6 gal water capacity\u003c\/li\u003e\n\u003cli\u003eDirect-vent sealed combustion with sidewall or vertical venting\u003c\/li\u003e\n\u003cli\u003eNatural gas with field-convertible propane operation\u003c\/li\u003e\n\u003cli\u003eCascade-ready for multi-boiler light commercial plants\u003c\/li\u003e\n\u003cli\u003eASME H stamped, CSA 4.9 certified and ENERGY STAR qualified\u003c\/li\u003e\n\u003cli\u003eWall-mount cabinet: 25-1\/10 in. W x 32-4\/5 in. H x 22-3\/10 in. D\u003c\/li\u003e\n\u003cli\u003e120V single-phase power with electronic ignition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\u003ctable class=\"product-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eNavien\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eh_8b0f82b\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput\u003c\/th\u003e\n\u003ctd\u003e399 MBH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower source\u003c\/th\u003e\n\u003ctd\u003ePropane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp class=\"product-disclosure\"\u003eOutdoorSupply is an independent retailer. This product is made by Navien; we are not affiliated with Navien and all brand names and model numbers are used to identify the product we are selling.\u003c\/p\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":48347287748797,"sku":"h_8b0f82b","price":854.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/8304\/6077\/files\/h_8b0f82b-1.jpg?v=1788018793","url":"https:\/\/out-doorsupply.myshopify.com\/products\/navien-nfb-c-series-399k-btu-high-efficiency-condensing-h-8b0f82b","provider":"OutdoorSupply","version":"1.0","type":"link"}