{"product_id":"carrier-py4gnaa48130aa-pressure-switch-h43sg3","title":"OEM Carrier Draft Pressure Switch 0.18 WC for PY4GNAA48130AA","description":"\u003ch1\u003eOEM Carrier Draft Inducer Pressure Switch 0.18\" WC for Model PY4GNAA48130AA\u003c\/h1\u003e\u003cp\u003eThis OEM draft pressure switch (part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e, superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY4GNAA48130AA\u003c\/strong\u003e packaged unit. The pressure switch monitors negative pressure created by the inducer motor to confirm proper venting before allowing ignition to proceed. When it fails or sticks open, the control board cannot verify inducer operation — resulting in a no-heat lockout condition, typically before a spark or ignition attempt is ever made.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" Water Column (WC) rating | Single-port draft sensing | Factory-matched set point | Replaces Honeywell IS20224-5236 | Superseded OEM part: HK06MB061\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact WC set points at the factory. Aftermarket units can drift ±0.02\" WC or more, causing nuisance lockouts or — worse — allowing ignition under unsafe draft conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power and gas before servicing. Tools needed: 1\/4\" nut driver, flathead screwdriver, manometer (recommended for verification). Disconnect the rubber sensing hose from the inducer housing and swap the switch; verify hose is free of cracks or blockages before reinstalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003ePY4GNAA48130AA\u003c\/strong\u003e packaged unit. Also compatible with select Bryant and Payne models using the 0.18\" WC draft pressure switch specification. Always verify the WC rating on your existing switch's label before ordering — an incorrect rating will cause nuisance lockouts or unsafe operation. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640328966515,"sku":"CARRIE-PY4GNAA48130AA-PRESSURE_SWITCH-HK06WC061","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640328999283,"sku":"CARRIE-PY4GNAA48130AA-PRESSURE_SWITCH-HK06WC061-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_647ef370-1b4b-4d2d-b4b7-f32ad957c74f.jpg?v=1775027530","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py4gnaa48130aa-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}