{"product_id":"oem-goodman-33-no-pressure-switch-for-wgge4542a115maa-11112501s","title":"OEM Goodman -.33\" NO Pressure Switch for WGGE4542A115MAA — 11112501S","description":"\u003cp\u003eThis genuine Goodman \u003cstrong\u003e11112501S Pressure Switch\u003c\/strong\u003e is a normally-open (NO) air-proving safety switch rated at \u003cstrong\u003e-0.33\" WC\u003c\/strong\u003e, designed as a direct OEM replacement for the \u003cstrong\u003eWGGE4542A115MAA\u003c\/strong\u003e gas furnace. The pressure switch confirms that the inducer (draft) motor is pulling proper airflow before allowing the ignition sequence to proceed — a critical safety interlock that prevents the furnace from firing without adequate venting.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 11112501S\u003c\/li\u003e\n\u003cli\u003eSwitch Type: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eTrip Setpoint: -0.33\" WC (water column)\u003c\/li\u003e\n\u003cli\u003eFits Model: WGGE4542A115MAA\u003c\/li\u003e\n\u003cli\u003eFunction: Combustion draft \/ air-flow proving safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePressure switches are calibrated devices — the exact setpoint matters. This OEM switch is factory-set to -0.33\" WC, guaranteeing the furnace proves draft at the manufacturer's spec. Generic switches with the wrong setpoint or hysteresis can cause chronic no-heat lockouts or, worse, defeat the safety function. Choosing OEM protects both reliability and combustion safety.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eA common no-heat repair. Shut off power, note tubing orientation, transfer the two wire leads and the pressure hose, and mount the new switch. Verify the switch closes on a call for heat using a manometer or by confirming the ignition sequence completes. Typical job time: 20–30 minutes. Inspect the hose and port for blockage while you're in there.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058253152627,"sku":"GOODMAN-14806","price":31.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-33-no-pressure-switch-for-wgge4542a115maa-11112501s","provider":"National HVAC Parts","version":"1.0","type":"link"}