{"product_id":"dometic-atwood-37022-furnace-limit-switch-8500-iii-8500-iv-8500-ld","title":"Dometic \/ Atwood 37022 Furnace Limit Switch – 8500-III \/ 8500-IV \/ 8500 LD","description":"\u003ch2 data-start=\"167\" data-end=\"246\"\u003eDometic \/ Atwood 37022 Furnace Limit Switch – 8500-III \/ 8500-IV \/ 8500 LD\u003c\/h2\u003e\n\u003cp data-start=\"247\" data-end=\"274\"\u003e\u003cstrong data-start=\"247\" data-end=\"274\"\u003eGenuine OEM Replacement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"276\" data-end=\"444\"\u003e\u003cstrong data-start=\"276\" data-end=\"292\"\u003ePart Number:\u003c\/strong\u003e 37022\u003cbr data-start=\"298\" data-end=\"301\"\u003e\u003cstrong data-start=\"301\" data-end=\"318\"\u003eProduct Type:\u003c\/strong\u003e Furnace Limit Switch (High Temperature Safety Switch)\u003cbr data-start=\"372\" data-end=\"375\"\u003e\u003cstrong data-start=\"375\" data-end=\"391\"\u003eApplication:\u003c\/strong\u003e Atwood 8500-III, 8500-IV \u0026amp; 8500 LD Series Furnaces\u003c\/p\u003e\n\u003chr data-start=\"446\" data-end=\"449\"\u003e\n\u003ch3 data-start=\"451\" data-end=\"473\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp data-start=\"475\" data-end=\"653\"\u003eThe \u003cstrong data-start=\"479\" data-end=\"526\"\u003eDometic \/ Atwood 37022 Furnace Limit Switch\u003c\/strong\u003e is a genuine OEM high-temperature safety switch designed for select \u003cstrong data-start=\"595\" data-end=\"652\"\u003eAtwood 8500-III, 8500-IV, and 8500 LD series furnaces\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"655\" data-end=\"896\"\u003eThis limit switch monitors internal furnace temperature and automatically interrupts burner operation if temperatures exceed safe operating levels. It plays a critical role in protecting the heat exchanger and preventing furnace overheating.\u003c\/p\u003e\n\u003cp data-start=\"898\" data-end=\"1151\"\u003eIf your furnace ignites but shuts down quickly, short-cycles once heated, or fails to maintain burner operation, a faulty limit switch may be the cause. Replacing it with OEM Part 37022 restores proper safety protection and reliable heating performance.\u003c\/p\u003e\n\u003cp data-start=\"1153\" data-end=\"1282\"\u003eManufactured to original equipment specifications, this component ensures correct temperature calibration and dependable fitment.\u003c\/p\u003e\n\u003chr data-start=\"1284\" data-end=\"1287\"\u003e\n\u003ch3 data-start=\"1289\" data-end=\"1307\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1311\" data-end=\"1358\"\u003eGenuine OEM Dometic \/ Atwood replacement part\u003c\/li\u003e\n\u003cli data-start=\"1361\" data-end=\"1396\"\u003eHigh-limit overheat safety switch\u003c\/li\u003e\n\u003cli data-start=\"1399\" data-end=\"1450\"\u003eDesigned for 8500-III, 8500-IV and 8500 LD series\u003c\/li\u003e\n\u003cli data-start=\"1453\" data-end=\"1508\"\u003eProtects furnace from excessive internal temperatures\u003c\/li\u003e\n\u003cli data-start=\"1511\" data-end=\"1557\"\u003eRestores safe and reliable heating operation\u003c\/li\u003e\n\u003cli data-start=\"1560\" data-end=\"1606\"\u003eManufactured to original equipment standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1608\" data-end=\"1611\"\u003e\n\u003ch3 data-start=\"1613\" data-end=\"1644\"\u003eCompatible Furnace Models\u003c\/h3\u003e\n\u003cp data-start=\"1646\" data-end=\"1680\"\u003ePart \u003cstrong data-start=\"1651\" data-end=\"1660\"\u003e37022\u003c\/strong\u003e is compatible with:\u003c\/p\u003e\n\u003cp data-start=\"1682\" data-end=\"1703\"\u003e\u003cstrong data-start=\"1682\" data-end=\"1701\"\u003e8500-III Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1706\" data-end=\"1716\"\u003e8516-III\u003c\/li\u003e\n\u003cli data-start=\"1719\" data-end=\"1729\"\u003e8520-III\u003c\/li\u003e\n\u003cli data-start=\"1732\" data-end=\"1742\"\u003e8525-III\u003c\/li\u003e\n\u003cli data-start=\"1745\" data-end=\"1755\"\u003e8531-III\u003c\/li\u003e\n\u003cli data-start=\"1758\" data-end=\"1768\"\u003e8535-III\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1770\" data-end=\"1790\"\u003e\u003cstrong data-start=\"1770\" data-end=\"1788\"\u003e8500-IV Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1793\" data-end=\"1802\"\u003e8516-IV\u003c\/li\u003e\n\u003cli data-start=\"1805\" data-end=\"1814\"\u003e8520-IV\u003c\/li\u003e\n\u003cli data-start=\"1817\" data-end=\"1826\"\u003e8525-IV\u003c\/li\u003e\n\u003cli data-start=\"1829\" data-end=\"1838\"\u003e8531-IV\u003c\/li\u003e\n\u003cli data-start=\"1841\" data-end=\"1850\"\u003e8535-IV\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1852\" data-end=\"1872\"\u003e\u003cstrong data-start=\"1852\" data-end=\"1870\"\u003e8500 LD Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1875\" data-end=\"1884\"\u003e8516-LD\u003c\/li\u003e\n\u003cli data-start=\"1887\" data-end=\"1896\"\u003e8520-LD\u003c\/li\u003e\n\u003cli data-start=\"1899\" data-end=\"1908\"\u003e8525-LD\u003c\/li\u003e\n\u003cli data-start=\"1911\" data-end=\"1920\"\u003e8531-LD\u003c\/li\u003e\n\u003cli data-start=\"1923\" data-end=\"1932\"\u003e8535-LD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote data-start=\"1934\" data-end=\"2032\"\u003e\n\u003cp data-start=\"1936\" data-end=\"2032\"\u003eAlways verify your furnace model on the unit data plate before ordering to ensure compatibility.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr data-start=\"2034\" data-end=\"2037\"\u003e\n\u003ch3 data-start=\"2039\" data-end=\"2084\"\u003eWhen Should You Replace the Limit Switch?\u003c\/h3\u003e\n\u003cp data-start=\"2086\" data-end=\"2145\"\u003eYou may need to replace the limit switch if you experience:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2149\" data-end=\"2194\"\u003eFurnace shutting off shortly after ignition\u003c\/li\u003e\n\u003cli data-start=\"2197\" data-end=\"2221\"\u003eRepeated short cycling\u003c\/li\u003e\n\u003cli data-start=\"2224\" data-end=\"2267\"\u003eBlower running but burner not staying lit\u003c\/li\u003e\n\u003cli data-start=\"2270\" data-end=\"2301\"\u003eOverheat diagnostic condition\u003c\/li\u003e\n\u003cli data-start=\"2304\" data-end=\"2355\"\u003eConfirmed failed switch during electrical testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2357\" data-end=\"2452\"\u003eThe limit switch is a critical safety device and must match your furnace model and calibration.\u003c\/p\u003e\n\u003chr data-start=\"2454\" data-end=\"2457\"\u003e\n\u003ch3 data-start=\"2459\" data-end=\"2487\"\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"2491\" data-end=\"2527\"\u003e\n\u003cstrong data-start=\"2491\" data-end=\"2508\"\u003eManufacturer:\u003c\/strong\u003e Dometic \/ Atwood\u003c\/li\u003e\n\u003cli data-start=\"2530\" data-end=\"2554\"\u003e\n\u003cstrong data-start=\"2530\" data-end=\"2546\"\u003ePart Number:\u003c\/strong\u003e 37022\u003c\/li\u003e\n\u003cli data-start=\"2557\" data-end=\"2598\"\u003e\n\u003cstrong data-start=\"2557\" data-end=\"2571\"\u003eComponent:\u003c\/strong\u003e High Limit Safety Switch\u003c\/li\u003e\n\u003cli data-start=\"2601\" data-end=\"2654\"\u003e\n\u003cstrong data-start=\"2601\" data-end=\"2617\"\u003eApplication:\u003c\/strong\u003e 8500-III, 8500-IV \u0026amp; 8500 LD Series\u003c\/li\u003e\n\u003cli data-start=\"2657\" data-end=\"2690\"\u003e\n\u003cstrong data-start=\"2657\" data-end=\"2670\"\u003eIncludes:\u003c\/strong\u003e Limit switch only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2692\" data-end=\"2695\"\u003e\n\u003ch2 data-start=\"2697\" data-end=\"2732\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3 data-start=\"2734\" data-end=\"2779\"\u003eQ: What does a furnace limit switch do?\u003c\/h3\u003e\n\u003cp data-start=\"2780\" data-end=\"2902\"\u003eA: It protects the furnace from overheating by shutting off burner operation if temperatures exceed safe operating limits.\u003c\/p\u003e\n\u003chr data-start=\"2904\" data-end=\"2907\"\u003e\n\u003ch3 data-start=\"2909\" data-end=\"2949\"\u003eQ: Will this fit 8500-II furnaces?\u003c\/h3\u003e\n\u003cp data-start=\"2950\" data-end=\"3072\"\u003eA: This listing is specifically for 8500-III, 8500-IV, and 8500 LD series models. Always confirm your exact furnace model.\u003c\/p\u003e\n\u003chr data-start=\"3074\" data-end=\"3077\"\u003e\n\u003ch3 data-start=\"3079\" data-end=\"3132\"\u003eQ: Can a bad limit switch cause cycling issues?\u003c\/h3\u003e\n\u003cp data-start=\"3133\" data-end=\"3234\"\u003eA: Yes. A weak or faulty limit switch can cause the furnace to ignite and then shut down prematurely.\u003c\/p\u003e\n\u003chr data-start=\"3236\" data-end=\"3239\"\u003e\n\u003ch3 data-start=\"3241\" data-end=\"3287\"\u003eQ: Is this an OEM Dometic \/ Atwood part?\u003c\/h3\u003e\n\u003cp data-start=\"3288\" data-end=\"3341\"\u003eA: Yes. 37022 is a genuine OEM replacement component.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47854805844209,"sku":null,"price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/37022.png?v=1772314801","url":"https:\/\/rvfurnaceguys.com\/products\/dometic-atwood-37022-furnace-limit-switch-8500-iii-8500-iv-8500-ld","provider":"RV Furnace Guys","version":"1.0","type":"link"}