{"product_id":"oem-lennox-transformer-24v-19w88","title":"OEM Lennox Transformer 24V — 19W88","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19W88\u003c\/strong\u003e transformer steps down incoming line voltage to the 24V control voltage that powers your thermostat, control board, gas valve, contactor, and relays. Without a working transformer, none of the low-voltage circuits in your Lennox furnace or air handler can operate — making this a small but mission-critical component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms include:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBlank or unresponsive thermostat\u003c\/li\u003e\n\u003cli\u003eSystem completely dead with no response to a call for heat or cool\u003c\/li\u003e\n\u003cli\u003eBlown control-circuit fuse on the board\u003c\/li\u003e\n\u003cli\u003eBuzzing, humming, or a burnt smell from the transformer\u003c\/li\u003e\n\u003cli\u003eIntermittent operation as the transformer breaks down under load\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The 19W88 is rated to the exact VA capacity and voltage taps required by your Lennox equipment. An undersized or mismatched aftermarket transformer can overheat, trip fuses, or fail to supply enough current to hold in the gas valve and relays. Choosing the authentic Lennox part ensures proper mounting, correct wiring connections, and dependable long-term performance. Verify the part number and voltage rating against your original before installing.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081113354611,"sku":"LNX-19W88","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-LNX-19W88.jpg?v=1783763971","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-transformer-24v-19w88","provider":"National HVAC Parts","version":"1.0","type":"link"}