{"product_id":"straight-up-solid-18j28-auto-limit-control-switch","title":"Straight Up Solid 18J28 Auto Limit Control Switch Delivering 165F Cut Off And 135F Cut In Rating Seven Inch Wiring Connection Bolt On Swap For Furnace Systems","description":"\u003cdiv\u003eHigh Grade 18J28 Furnace Limit Switch Replacement\u003cbr\u003e\n✔️ 165F shutoff and 135F reset rating uses 7 inch wires \u003cp\u003eThis automatic temperature regulator monitors internal furnace drafts to stop overheating before heat exchangers crack. HVAC technicians typically mount these safety units directly onto supply plenums or air handler cabinets to maintain consistent combustion airflow while protecting indoor comfort.\u003c\/p\u003e ✅ Direct 18J28 cross reference matching original manufacturer specifications\u003cbr\u003e\n✅ Rapid thermal activation protecting sensitive electronics from surge damage\u003cbr\u003e\n✅ Pre wired seven inch leads eliminating guesswork during field installations\u003cbr\u003e\n✅ Corrosion resistant housing maintaining stable resistance levels over time\u003cbr\u003e \u003cp\u003e💡 What makes a reliable furnace limit switch worth upgrading in older units?\u003cbr\u003e\nInstalling a proper thermal cut off device prevents costly component damage during sudden burner malfunctions.\u003cbr\u003e\n- Calibrated bimetal strips reacting instantly to abnormal heat spikes inside plenums\u003cbr\u003e\n- Heavy duty copper contacts maintaining steady power flow throughout cycling operations\u003cbr\u003e\n- Universal mounting patterns allowing quick swaps on various residential gas furnace decks\u003cbr\u003e\n- Smart circuit interruption keeping downstream air handlers handy year round\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49306046005483,"sku":"VXB005JUZLVO","price":77.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51XnCzo86FL.jpg?v=1787864014","url":"https:\/\/vxb.com\/products\/straight-up-solid-18j28-auto-limit-control-switch","provider":"VXB Bearings","version":"1.0","type":"link"}