{"product_id":"oem-lennox-premix-burner-15p43","title":"OEM Lennox Premix Burner — 15P43","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e15P43\u003c\/strong\u003e premix burner mixes gas and combustion air before ignition to produce a clean, controlled, high-efficiency flame in your Lennox gas furnace. Premix designs are standard in condensing furnaces because they maintain a precise air-fuel ratio for lower emissions, quieter operation, and better fuel economy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e As the burner ages or corrodes, you may see delayed or noisy ignition, rumbling or popping at start-up, a yellow or uneven flame, soot accumulation, short cycling, or lockouts caused by weak flame sensing. Blocked or eroded burner ports disturb combustion and can trip the furnace safety controls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The Lennox \u003cstrong\u003e15P43\u003c\/strong\u003e burner is built to exact port sizing, orifice specifications, and material composition for your furnace. The factory part ensures correct flame characteristics, proper heat-exchanger performance, and compliance with Lennox safety and efficiency ratings. Generic replacements risk poor combustion and nuisance faults — OEM keeps your system running as designed and preserves warranty coverage.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081129378163,"sku":"LNX-15P43","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-burner-ribbon-LNX-15P43.jpg?v=1783762899","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-premix-burner-15p43","provider":"National HVAC Parts","version":"1.0","type":"link"}