{"product_id":"navien-ncb300-gas-combi-boiler","title":"Navien NCB300 Gas Combi Boiler (Includes Free Flue \u0026 T3R Thermostat)","description":"\u003ch3 class=\"product-meta__title heading h1\" style=\"text-align: left;\"\u003e\u003cspan\u003eNavien NCB300 Gas Combi Boiler \u003cbr\u003e(Includes Free Flue \u0026amp; T3R Thermostat)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Navien NCB300 gas condensing combi boiler combines compact dimensions with efficient heating and hot water performance. Choose from four sizes to suit your installation and hot water requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWith stainless steel heat exchangers, straightforward controls and compatibility with optional smart controls, the NCB300 offers a practical solution for modern homes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eKey features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e5-year parts and labour warranty, subject to Navien’s terms.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eErP A rated with 93% efficiency.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStainless steel heat exchangers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNatural gas and LPG compatible; conversion kit included.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with optional Navien Smart Plus controls.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e20% hydrogen-blend ready.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompact dimensions: 680mm H × 395mm W × 285mm D.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NAVIEN","offers":[{"title":"28kW NCB300-28K","offer_id":55149473792337,"sku":"GAS-NCB300","price":750.0,"currency_code":"GBP","in_stock":true},{"title":"30kW NCB300-30K","offer_id":55149473825105,"sku":"GAS-NCB300","price":825.0,"currency_code":"GBP","in_stock":true},{"title":"37kW NCB300-37K","offer_id":55149473857873,"sku":"GAS-NCB300","price":899.0,"currency_code":"GBP","in_stock":true},{"title":"41kW NCB300-41K","offer_id":55149473890641,"sku":"GAS-NCB300","price":925.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/5022\/0369\/files\/ChatGPT_Image_Oct_1_2026_10_07_14_PM.png?v=1790889304","url":"https:\/\/www.hydeplumbheatsuppliers.co.uk\/products\/navien-ncb300-gas-combi-boiler","provider":"Hyde Plumbing \u0026 Heating Supplies","version":"1.0","type":"link"}