{"product_id":"carrier-hvac-hh18ha502-hi-limit-switch-auto-reset-140-180f","title":"Carrier HVAC HH18HA502 Hi Limit Switch, Auto Reset, 140-180F","description":"\u003cp\u003eThe \u003cstrong\u003eCarrier HH18HA502 Hi Limit Switch\u003c\/strong\u003e is a genuine OEM protective component designed to safeguard your furnace from damage caused by overheating. When temperatures exceed safe operating thresholds, this switch detects the excess heat and responds automatically — helping to prevent costly system damage and ensuring consistent, reliable performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Reset Functionality:\u003c\/strong\u003e Automatically resets once temperatures return to a safe range, reducing the need for manual intervention\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Operates within a \u003cstrong\u003e140°F to 180°F\u003c\/strong\u003e range for precise thermal protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine OEM Component:\u003c\/strong\u003e Real OEM-quality construction ensures reliable control and performance when it matters most\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Hi Limit Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommon Equipment Type:\u003c\/strong\u003e Furnace Parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe HH18HA502 Hi Limit Switch continuously monitors furnace temperatures during operation. If the heat rises beyond the designated safe threshold, the switch activates to interrupt the heating cycle, protecting internal components from overheating damage. Once temperatures normalize, the \u003cstrong\u003eauto reset feature\u003c\/strong\u003e restores normal operation without requiring manual reset.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Models\u003c\/h3\u003e\n\u003cp\u003eThis hi limit switch is compatible with a range of popular Carrier furnace units, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e58CTA070 11108\u003c\/li\u003e\n  \u003cli\u003e58CTA070 10108\u003c\/li\u003e\n  \u003cli\u003e58CTA070 12108\u003c\/li\u003e\n  \u003cli\u003eAdditional compatible models listed in the \u003cstrong\u003eFITS MODELS\u003c\/strong\u003e section below\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.3\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5\" \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"carrier","offers":[{"title":"Default Title","offer_id":51297159676210,"sku":"HH18HA502","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/products\/carrier-hvac-hh18ha502-hi-limit-switch-auto-reset-140-180f","provider":"Malachy Parts+","version":"1.0","type":"link"}