{"product_id":"oem-lennox-switch-pressure-low-18j74","title":"OEM Lennox Switch Pressure Low — 18J74","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 18J74\u003c\/strong\u003e is a genuine OEM low pressure switch engineered to monitor system refrigerant pressure and shut down the unit if pressure drops below a safe threshold, preventing compressor damage in Lennox HVAC systems. A failed \u003cstrong\u003e18J74\u003c\/strong\u003e pressure switch may cause symptoms such as the system not cooling or heating, compressor short-cycling, or a low-pressure fault code on the control board. This direct OEM replacement ensures proper fit and reliable protection for compatible Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081038217587,"sku":"LNX-18J74","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-switch-pressure-low-18j74","provider":"National HVAC Parts","version":"1.0","type":"link"}