{"product_id":"oem-lennox-contactor-3-pole-25a-w-aux-17f64","title":"OEM Lennox Contactor 3-Pole 25A w\/ Aux — 17F64","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e17F64\u003c\/strong\u003e is a 3-pole contactor rated for 25 amps and equipped with an auxiliary contact, designed to switch power to the compressor and fan motor in your Lennox outdoor unit. The added auxiliary contact provides a secondary switching circuit — commonly used to signal or control an accessory load, such as a crankcase heater or status feedback — alongside the main power poles. When the control coil is energized, the main contacts close to deliver line voltage while the aux contact changes state in step.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e welded or burned main contacts that keep the unit running continuously, a coil that hums but won't pull in, an auxiliary circuit that no longer switches, no-start compressor conditions, and arcing or discoloration at the terminals. Any of these indicates the contactor has reached the end of its service life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the Lennox \u003cstrong\u003e17F64\u003c\/strong\u003e is built to the precise amperage, coil, and auxiliary-contact configuration your equipment was engineered around. Aftermarket contactors often lack the correct aux contact or rating, causing accessory circuits to malfunction. Genuine OEM ensures full compatibility, reliable operation, and continued Lennox warranty protection.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081081340275,"sku":"LNX-17F64","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-3pole-LNX-17F64.jpg?v=1783759884","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-contactor-3-pole-25a-w-aux-17f64","provider":"National HVAC Parts","version":"1.0","type":"link"}