{"product_id":"oem-lennox-r40654005-heat-exchanger-assembly-58w72","title":"OEM Lennox R40654005 Heat Exchanger Assembly — 58W72","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 58W72\u003c\/strong\u003e is a genuine OEM heat exchanger assembly (reference R40654005) designed to maximize thermal efficiency by safely channeling combustion heat into the supply airstream while fully isolating flue gases from circulated air. Failure symptoms include unusual odors, sooting on interior furnace components, carbon monoxide presence, or the furnace cycling off before reaching the set temperature. This assembly is a certified Lennox OEM replacement, offering a guaranteed fit and reliable operation in compatible Lennox furnace applications.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081063842163,"sku":"LNX-58W72","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-r40654005-heat-exchanger-assembly-58w72","provider":"National HVAC Parts","version":"1.0","type":"link"}