{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-gdt090-4a-b1370113","title":"OEM Goodman 120°F Auxiliary Limit Switch GDT090-4A — B1370113","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370113\u003c\/strong\u003e is a genuine OEM 120°F auxiliary limit switch designed for the \u003cstrong\u003eGDT090-4A\u003c\/strong\u003e gas furnace and related Goodman\/Amana models. This normally-closed thermal safety opens the control circuit if the blower compartment overheats, protecting the heat exchanger and internal wiring from heat damage. A failed or nuisance-tripping limit is a common cause of no-heat and short-cycling calls.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Auxiliary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 120°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eFunction: Opens circuit on over-temperature\u003c\/li\u003e\n\u003cli\u003eFits model: GDT090-4A\u003c\/li\u003e\n\u003cli\u003eOEM part number: B1370113\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause a limit switch is a safety device, the OEM part guarantees the exact trip temperature, mounting bracket, and terminal configuration specified by Goodman. Substitute switches with the wrong set-point can either fail to protect the furnace or trip prematurely. For any safety control, OEM is the recommended path.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5)\u003c\/strong\u003e — Disconnect power, unplug the two spade terminals, remove two mounting screws, and reverse to install. A quick, low-cost repair for most DIYers.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058080465267,"sku":"GOODMAN-B1370113","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-gdt090-4a-b1370113","provider":"National HVAC Parts","version":"1.0","type":"link"}