{"product_id":"oem-lennox-high-altitude-pressure-switch-kit-18l31","title":"OEM Lennox High Altitude Pressure Switch Kit — 18L31","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 18L31\u003c\/strong\u003e High Altitude Pressure Switch Kit is an OEM replacement designed to monitor flue pressure and ensure safe combustion in Lennox furnaces operating at high elevations. If your furnace is experiencing nuisance lockouts, failure to ignite, or error codes related to pressure sensing, a faulty pressure switch is often the cause. This kit is engineered specifically for Lennox systems to restore reliable, code-compliant operation in high-altitude installations.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081035334003,"sku":"LNX-18L31","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-high-altitude-pressure-switch-kit-18l31","provider":"National HVAC Parts","version":"1.0","type":"link"}