{"product_id":"oem-goodman-0-85-wc-pressure-switch-no-for-ads81155cna-b1370150","title":"OEM Goodman -0.85\" WC Pressure Switch (NO) for ADS81155CNA — B1370150","description":"\u003ch2\u003eGoodman B1370150 Air Pressure Switch (-0.85\" WC, NO)\u003c\/h2\u003e\u003cp\u003eThe B1370150 is a genuine OEM negative-air-pressure (draft-proving) switch for the Goodman \u003cstrong\u003eADS81155CNA\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. It confirms that the inducer motor is pulling proper draft through the heat exchanger before the control board allows ignition. When the inducer creates the rated vacuum, the normally-open contacts close and prove draft; if venting is blocked or the inducer is weak, the switch stays open and ignition is safely prevented.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSet point: -0.85\" water column (WC)\u003c\/li\u003e\n\u003cli\u003eContact configuration: Normally open (NO), single stage\u003c\/li\u003e\n\u003cli\u003eFunction: Draft \/ combustion air proving safety\u003c\/li\u003e\n\u003cli\u003eFit: Goodman ADS81155CNA and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370150\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch is calibrated to the precise -0.85\" WC set point matched to your furnace's inducer and venting. Generic pressure switches with the wrong set point are a leading cause of intermittent no-heat calls and false lockouts. For reliable ignition sequencing, OEM is the safe choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — usually 15–20 minutes. Cut power, photograph the hose and wire routing, transfer the rubber tubing and spade terminals to the new switch, and remount. Inspect the port and tubing for moisture or blockage while you're in there.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Direct Replacement","offer_id":63032484921715,"sku":"B1370150-GEN","price":31.14,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048134066547,"sku":"B1370150","price":40.48,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-draft-inducer-B1370150.jpg?v=1782944788","url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-85-wc-pressure-switch-no-for-ads81155cna-b1370150","provider":"National HVAC Parts","version":"1.0","type":"link"}