{"product_id":"carrier-py3gnaa48115aa-pressure-switch-h43sg3","title":"OEM Carrier Pressure Switch 0.18\" WC for PY3GNAA48115AA","description":"\u003ch1\u003eOEM Carrier Draft Pressure Switch 0.18\" WC for Model PY3GNAA48115AA\u003c\/h1\u003e\u003cp\u003eThis OEM draft pressure proving switch is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNAA48115AA\u003c\/strong\u003e packaged unit. Rated at \u003cstrong\u003e0.18\" water column (WC)\u003c\/strong\u003e, this SPST switch monitors negative pressure created by the inducer blower to confirm safe venting conditions before allowing ignition to proceed. When it fails — or when the tubing cracks, the inducer wheel is dirty, or the port is blocked — the control board never receives the \"safe to ignite\" signal, resulting in a no-heat lockout. Technicians will typically find a pressure switch fault code on the board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" WC set point | SPST (Single-Pole, Single-Throw) | Normally open | OEM Part# HK06WC061 (superseded by HK06MB061) | Honeywell cross-reference: IS20224-5236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM switch manufactured to exact factory tolerances. Generic aftermarket switches frequently exhibit set-point drift, incorrect port sizing, or premature diaphragm failure — all of which cause nuisance lockouts or unsafe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off power and gas before beginning. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a manometer to verify inducer static pressure post-install. Always inspect the rubber hose barb for cracks and replace tubing if brittle or collapsed.\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 Carrier model \u003cstrong\u003ePY3GNAA48115AA\u003c\/strong\u003e packaged gas\/electric units. Also fits select Bryant and Payne models sharing this pressure rating — verify your unit's data plate and existing switch WC rating before ordering. Note: HK06WC061 was officially discontinued in December 2024 and fulfilled by superseding OEM part HK06MB061 — a direct, drop-in replacement. Questions about fitment? Our HVAC parts specialists verify compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640446931315,"sku":"CARRIE-PY3GNAA48115AA-PRESSURE_SWITCH-HK06WC061","price":48.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640446964083,"sku":"CARRIE-PY3GNAA48115AA-PRESSURE_SWITCH-HK06WC061-GEN","price":42.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_695282a3-4b9d-432c-bca9-f1750c9e278a.jpg?v=1775036618","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gnaa48115aa-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}