{"product_id":"oem-goodman-0-47-wc-pressure-switch-for-amh80704bnac-b1370176","title":"OEM Goodman -0.47\" WC Pressure Switch for AMH80704BNAC — B1370176","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370176 Pressure Switch\u003c\/strong\u003e is a genuine OEM draft-safety control for \u003cstrong\u003eAMH80704BNAC\u003c\/strong\u003e Goodman and Amana gas furnaces. This \u003cstrong\u003enormally-open (NO)\u003c\/strong\u003e switch monitors the inducer draft; when the induced-draft blower creates a vacuum of about \u003cstrong\u003e-0.47 inches of water column\u003c\/strong\u003e, the switch closes to prove airflow and allow the ignition sequence to continue. If the flue is blocked or the inducer fails, the switch stays open and safely prevents the burners from firing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370176\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Air\/draft pressure switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet Point:\u003c\/strong\u003e -0.47\" WC (water column)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Normally open, closes on negative pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Goodman \/ Amana AMH80704BNAC 80% AFUE furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine OEM Goodman\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePressure switch set points are critical — a generic switch rated even a few hundredths of an inch off can cause hard starts, short cycling, or persistent lockout codes. The \u003cstrong\u003eOEM B1370176\u003c\/strong\u003e is matched to the exact -0.47\" WC trip pressure and hose-port geometry your AMH80704BNAC requires, ensuring reliable proving on every call for heat.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e. Disconnect power, pull the two electrical terminals and the rubber vacuum hose, remove the mounting screws, and install the replacement. Reconnect the hose firmly and confirm no cracks or kinks. Test the full ignition sequence afterward. Typical replacement takes 15–20 minutes for a DIY-capable owner or any HVAC pro.\u003c\/p\u003e\u003cp\u003eRestore safe, code-compliant furnace operation with this genuine Goodman OEM pressure switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057613324659,"sku":"GOODMAN-5371","price":29.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-47-wc-pressure-switch-for-amh80704bnac-b1370176","provider":"National HVAC Parts","version":"1.0","type":"link"}