{"product_id":"s1-7975-3281","title":"7975-3281 Coleman OEM F110-20 FAN Switch,  90-110F AUTO Limit Switch","description":"\u003ch2\u003eS1-7975-3281 Coleman OEM F110-20 FAN Switch, 90-110F AUTO Limit Switch\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eF110-20 \u003c\/strong\u003eFAN Switch, \u003cspan\u003e90-110F \u003cstrong\u003eAUTO Limit Switch \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e313675, \u003cstrong\u003eSize\u003c\/strong\u003e 60T82, \u003cstrong\u003eManufacture\u003c\/strong\u003e # 21157, \u003c\/span\u003e\u003cspan\u003eA1831\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReplaces \u003c\/strong\u003e7700-328, 7700-3281, S1-7975-3281, S1-7956-3351, 7660-3281, 7995-3351\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e1 year warranty on everything we sell \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eEnhance your furnace’s reliability and safety with the genuine Coleman S1-7975-3281 F110-20F fan limit switch. This automatic switch senses plenum temperature and cycles the blower on at 90 °F and off at 110 °F, protecting heat exchangers from overheating and ensuring optimal airflow. Engineered for direct fit in standard 60T11 limit housings, its rugged metal case and precision bimetal element deliver long-lasting performance in residential, mobile-home, and light-commercial furnaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eCross Reference\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Part Replaced\u003c\/th\u003e\n\u003cth\u003eEquivalent \/ Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e7700-328\u003c\/td\u003e\n\u003ctd\u003eOriginal Coleman limit switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7700-3281\u003c\/td\u003e\n\u003ctd\u003eAlternate Coleman service part\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS1-7956-3351\u003c\/td\u003e\n\u003ctd\u003eOlder OEM designation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7660-3281\u003c\/td\u003e\n\u003ctd\u003eColeman residential furnaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7995-3351\u003c\/td\u003e\n\u003ctd\u003eMobile-home and gas-pack units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003eData sourced from HVACpartstore and Coleman OEM cross listings\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTechnician Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAlways disconnect power at the service panel before servicing the furnace.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAccess the F110-20F switch through the blower compartment; remove mounting screws and gently extract the old unit from its 60T11 housing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTest continuity across the two fan terminals at room temperature (closed) and above 110 °F (open) using a multimeter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eInstall the new switch fully into the housing, ensuring the bimetal element faces into the plenum and terminals are snug.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAfter reassembly, run multiple heat cycles to confirm blower-on and blower-off temperatures align with switch ratings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eModels \/ Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColeman Gas Furnaces\u003c\/td\u003e\n\u003ctd\u003e7600, 7624, 7654, 7680, COAS, COAT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYork \u0026amp; Miller Furnaces\u003c\/td\u003e\n\u003ctd\u003eAny unit using a 60T11 upper housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMobile Home \u0026amp; RV Furnaces\u003c\/td\u003e\n\u003ctd\u003eColeman-based gas-pack and rooftop units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Commercial Blowers\u003c\/td\u003e\n\u003ctd\u003eBroan-NuTone and Packard inline ventilators with 60T11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":16079292530754,"sku":"S1-7975-3281","price":31.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2025-10-25_215131.png?v=1761454376","url":"https:\/\/hvacpartstore.com\/products\/s1-7975-3281","provider":"HVACpartstore","version":"1.0","type":"link"}