{"product_id":"oem-goodman-high-limit-switch-for-gdt070-3b-furnace-b1370193","title":"OEM Goodman High Limit Switch for GDT070-3B Furnace — B1370193","description":"\u003ch2\u003eGoodman B1370193 High Limit Switch\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman B1370193\u003c\/strong\u003e is the factory high limit switch for the \u003cstrong\u003eGDT070-3B\u003c\/strong\u003e gas furnace. Mounted on the heat-exchanger bulkhead, it is the primary overtemperature safety: if supply-air temperature rises above its factory trip point — typically from restricted airflow, a dirty filter, a failing blower, or a blocked duct — it opens the control circuit and shuts off the burners to protect the heat exchanger from overheating. Frequent limit trips are a warning sign that should never be bypassed.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370193\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e Goodman GDT070-3B furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Supply-air overtemperature cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis genuine \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e high limit is calibrated to the exact trip temperature and mounting footprint your furnace was engineered around. Generic replacements may carry different set points or bracket dimensions, risking nuisance trips or improper protection. Because the high limit guards the heat exchanger, we recommend the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRating: Easy (1\/5).\u003c\/strong\u003e Disconnect power, unplug the two spade terminals, remove the mounting screws, and install the new switch in the identical orientation on the heat-exchanger panel. Reconnect and restore power — usually a 10–15 minute job. If the furnace continues to trip the limit after replacement, address the underlying airflow restriction (replace the filter, open registers, check the blower) or call a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058079908211,"sku":"GOODMAN-10439","price":28.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-high-limit-switch-for-gdt070-3b-furnace-b1370193","provider":"National HVAC Parts","version":"1.0","type":"link"}