{"product_id":"oem-lennox-e1snsr55ap1-dirty-filter-switch-53w66","title":"OEM Lennox E1SNSR55AP1 Dirty Filter Switch — 53W66","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 53W66\u003c\/strong\u003e (model E1SNSR55AP1) is a genuine OEM dirty filter switch that monitors differential air pressure across your Lennox system's filter, triggering an alert or system response when the filter becomes clogged and airflow is restricted. Signs that this switch may need replacement include false filter alerts, no alert when filters are visibly dirty, or system performance issues related to airflow monitoring. Designed as a direct OEM replacement, this part integrates seamlessly with compatible Lennox air handlers and furnace systems.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081026847091,"sku":"LNX-53W66","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-e1snsr55ap1-dirty-filter-switch-53w66","provider":"National HVAC Parts","version":"1.0","type":"link"}