{"product_id":"oem-lennox-blower-relay-43h89","title":"OEM Lennox Blower Relay — 43H89","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e43H89\u003c\/strong\u003e blower relay switches line-voltage power to the indoor blower motor on command from the furnace control board or thermostat. This electromechanical component energizes the blower for heating, cooling, and continuous-fan operation, making it essential to consistent, properly timed airflow in your Lennox system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e a blower that won't start or runs continuously, weak or no airflow at the registers, a chattering or buzzing relay, intermittent fan operation, or burnt and pitted contacts. A failed \u003cstrong\u003e43H89\u003c\/strong\u003e can leave the heat exchanger without airflow and trip the high-limit switch, causing nuisance shutdowns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the \u003cstrong\u003e43H89\u003c\/strong\u003e is rated to the exact coil voltage and contact amperage your Lennox equipment requires. Substitute relays may have mismatched ratings or terminal layouts that overheat, weld shut, or fail prematurely. This factory-spec relay delivers dependable switching, correct blower timing, and long service life, keeping your system's airflow safe and reliable.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081106276723,"sku":"LNX-43H89","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-relay-fan-LNX-43H89.jpg?v=1783759460","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-blower-relay-43h89","provider":"National HVAC Parts","version":"1.0","type":"link"}