{"product_id":"oem-goodman-0-85-wc-pressure-switch-no-for-gdt115-5a-b1370150","title":"OEM Goodman -0.85\" WC Pressure Switch (NO) for GDT115-5A — B1370150","description":"\u003cp\u003eGenuine OEM Goodman \u003cstrong\u003eB1370150 air pressure switch\u003c\/strong\u003e, set at \u003cstrong\u003e-0.85\" WC\u003c\/strong\u003e and \u003cstrong\u003enormally open (NO)\u003c\/strong\u003e, for the Goodman \u003cstrong\u003eGDT115-5A\u003c\/strong\u003e gas furnace. This switch proves that the inducer (draft) motor is establishing proper negative pressure before the control board allows ignition — a core combustion-safety interlock. A failed switch or blocked port typically shows as the inducer running but no ignition, often with a pressure-switch fault code.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1370150\u003c\/li\u003e\n\u003cli\u003eSet Point: -0.85\" W.C. (water column)\u003c\/li\u003e\n\u003cli\u003eContact Configuration: Normally Open (closes on draft)\u003c\/li\u003e\n\u003cli\u003eType: Single-stage negative-pressure \/ draft-proving switch\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (fits many Amana\/Janitrol units)\u003c\/li\u003e\n\u003cli\u003eFits: GDT115-5A and compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePressure-switch set points are model-specific. A generic switch with the wrong \"WC\" rating or contact configuration will either fail to close (no heat) or close too early (defeating the safety). This \u003cstrong\u003eOEM B1370150\u003c\/strong\u003e is factory-matched to -0.85\" WC \/ NO for correct, code-compliant operation. OEM recommended for this safety-rated part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eWith power off, disconnect the electrical spade terminals and the rubber hose, unscrew the switch, and mount the replacement — reconnecting the hose without kinks. Straightforward, but if the new switch still won't prove, inspect the hose, drain trap, and inducer for restrictions, which is best handled by an HVAC technician.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eConfirm the \"WC\" set point and NO\/NC configuration on your original switch before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058081513843,"sku":"GOODMAN-10499","price":25.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-85-wc-pressure-switch-no-for-gdt115-5a-b1370150","provider":"National HVAC Parts","version":"1.0","type":"link"}