{"product_id":"carrier-py3gpaa48090aa-pressure-switch-h43sg3","title":"OEM Carrier Draft Pressure Switch 0.18 WC for PY3GPAA48090AA","description":"\u003ch1\u003eOEM Carrier Draft Pressure Switch 0.18\" WC for Model PY3GPAA48090AA\u003c\/h1\u003e\u003cp\u003eThis OEM draft inducer pressure switch (part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e, superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GPAA48090AA\u003c\/strong\u003e packaged gas unit. The pressure switch monitors negative pressure created by the draft inducer motor to confirm safe flue-gas venting before allowing the ignition sequence to proceed. When this switch fails, the furnace or packaged unit will lock out before ignition — often displaying a pressure-switch fault code — leaving you with no heat despite the inducer running normally.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" Water Column (WC) set point | Normally open (N.O.) configuration | Spade terminal connections | Factory-calibrated for precise draft proving | OEM Part: HK06WC061 \/ Superseded by HK06MB061\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory-authorized part, manufactured to exact WC tolerance. Generic switches often carry wider tolerance margins, risking nuisance lockouts or — more dangerously — failing to detect a true venting failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off gas and power before servicing. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a manometer to verify draft pressure post-install. Photograph existing hose and wire connections before removing the old switch. Always check the inducer hose and port for blockage before replacing the switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PY3GPAA48090AA\u003c\/strong\u003e packaged gas\/electric unit and also fits a range of Carrier, Bryant, and Payne furnaces, packaged units, RTUs, heat pumps, and air handlers requiring a 0.18\" WC draft pressure switch. Verify your existing switch's WC rating on the data plate or switch label before ordering. Have fitment questions? Our HVAC parts specialists confirm compatibility before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640436904307,"sku":"CARRIE-PY3GPAA48090AA-PRESSURE_SWITCH-HK06WC061","price":45.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640436937075,"sku":"CARRIE-PY3GPAA48090AA-PRESSURE_SWITCH-HK06WC061-GEN","price":40.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_9f87264a-1f9e-491c-a6cf-b3c241797a5a.jpg?v=1775027519","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa48090aa-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}