{"product_id":"carrier-hvac-hh18ha449-rollout-limit-switch-spst-350f-manual-reset","title":"Carrier HVAC HH18HA449 Rollout Limit Switch, SPST, 350F, Manual Reset","description":"\u003cp\u003eThe \u003cstrong\u003eCarrier HH18HA449 Rollout Limit Switch\u003c\/strong\u003e is a genuine OEM safety component designed to protect your HVAC system by detecting dangerous flame rollout conditions. When a rollout event is sensed, the switch immediately stops unit operation to prevent fires and maintain safe performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rollout Limit Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e SPST (Single-Pole, Single-Throw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 350°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Manual Reset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEquipment Category:\u003c\/strong\u003e Furnace Parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGenuine OEM Quality\u003c\/h3\u003e\n\u003cp\u003eAs a \u003cstrong\u003ereal OEM replacement part\u003c\/strong\u003e, the HH18HA449 is manufactured to the exact specifications required for Carrier HVAC systems. Genuine OEM buttons and switches ensure efficient HVAC operation, supporting reliable indoor climate control and long-term system performance.\u003c\/p\u003e\n\n\u003ch3\u003eSafety Functionality\u003c\/h3\u003e\n\u003cp\u003eThis rollout limit switch serves as a critical safety device within your furnace. It continuously monitors for flame rollout — a hazardous condition where flames extend beyond the combustion chamber. Upon detection, the switch \u003cstrong\u003eimmediately shuts down the unit\u003c\/strong\u003e to prevent fire damage and protect both the equipment and your home.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Models\u003c\/h3\u003e\n\u003cp\u003eThe HH18HA449 is compatible with a range of Carrier units, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e398BAZ036060ADKA\u003c\/li\u003e\n  \u003cli\u003e398BAZ036080ADKA\u003c\/li\u003e\n  \u003cli\u003e398BAZ036060GDKA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease refer to the \u003cstrong\u003eFITS MODELS\u003c\/strong\u003e section for the complete list of compatible units before purchasing.\u003c\/p\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\u003e2.5\" \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\u003e1.0\" \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"carrier","offers":[{"title":"Default Title","offer_id":51297161969970,"sku":"HH18HA449","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/products\/carrier-hvac-hh18ha449-rollout-limit-switch-spst-350f-manual-reset","provider":"Malachy Parts+","version":"1.0","type":"link"}