{"product_id":"oem-lennox-inshot-burner-assembly-lga-series-79j74","title":"OEM Lennox Inshot Burner Assembly, LGA Series — 79J74","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e79J74\u003c\/strong\u003e is an inshot burner assembly designed for Lennox LGA series gas-fired units. Inshot burners fire the gas-air mixture directly into the heat exchanger tubes, providing the efficient, high-velocity flame these commercial and rooftop units rely on for consistent heating performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Worn inshot burners commonly cause delayed or rough ignition, flame that lifts or rolls out, yellow or sooty flames, rumbling and vibration, and nuisance safety lockouts. Corrosion or blocked burner ports disrupt the flame pattern and reduce combustion efficiency, driving up fuel use and callbacks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e79J74\u003c\/strong\u003e is manufactured to the exact port and orifice geometry the LGA series requires, so the flame aligns properly with the ignition source, flame sensor, and heat exchanger inlet. Substitute burners can misfire, soot, or defeat safety controls. Installing the factory Lennox inshot burner ensures the correct flame profile, reliable ignition, and full compatibility with your LGA series equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081127739763,"sku":"LNX-79J74","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-burner-inshot-LNX-79J74.jpg?v=1783762194","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-inshot-burner-assembly-lga-series-79j74","provider":"National HVAC Parts","version":"1.0","type":"link"}