{"product_id":"oem-goodman-35-in-wc-pressure-switch-for-gsm080-4-b1370133","title":"OEM Goodman -.35 in. WC Pressure Switch for GSM080-4 — B1370133","description":"\u003ch2\u003eGoodman B1370133 Pressure Switch (-.35 in. WC, NO)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman B1370133 pressure switch\u003c\/strong\u003e is a factory-original combustion-air safety control for \u003cstrong\u003eGSM080-4\u003c\/strong\u003e gas furnaces. This normally-open switch senses draft from the induced-draft blower and closes at approximately \u003cstrong\u003e-0.35 in. WC\u003c\/strong\u003e, proving venting before the board allows ignition. A failed switch is a leading cause of no-heat lockouts — the furnace tries to start, the switch never proves, and the sequence faults out. Replacing it with the exact OEM setpoint restores safe, reliable ignition.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: B1370133\u003c\/li\u003e\n\u003cli\u003eTrip Point: -0.35 in. WC\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eCompatible Model: Goodman GSM080-4\u003c\/li\u003e\n\u003cli\u003eEquipment Type: Gas Furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Combustion-air \/ draft proving\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine OEM Goodman\u003c\/strong\u003e switch is calibrated to the exact -0.35 in. WC setpoint the control board expects. A generic switch with the wrong setpoint may cause nuisance lockouts or, worse, mask a real venting problem. Matching the OEM part keeps the safety circuit working as designed.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — a two-wire, one-hose swap that typically takes 10–15 minutes. Disconnect power, note the hose routing, and transfer the tubing to the new switch. A quick, DIY-friendly repair for most homeowners.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058180866419,"sku":"GOODMAN-12934","price":25.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-35-in-wc-pressure-switch-for-gsm080-4-b1370133","provider":"National HVAC Parts","version":"1.0","type":"link"}