{"product_id":"carrier-py3gnaa42090aa-pressure-switch-h43sg3","title":"OEM Carrier Pressure Switch 0.18\" WC for PY3GNAA42090AA — HK06WC061","description":"\u003ch1\u003eOEM Carrier Draft Inducer Pressure Switch 0.18\" WC for Model PY3GNAA42090AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement pressure switch for the \u003cstrong\u003eCarrier PY3GNAA42090AA\u003c\/strong\u003e gas furnace, carrying original part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e (superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e). The pressure switch monitors negative pressure created by the draft inducer motor to confirm safe venting conditions before allowing the ignition sequence to proceed. When this switch fails or sticks, the furnace will typically lock out on a pressure switch fault — the inducer runs, but the system never advances to ignition, leaving you with no heat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" Water Column (W.C.) rating | SPST (Single Pole, Single Throw) | Compatible with Honeywell cross-reference IS20224-5236 | Fits Carrier, Bryant, and Payne branded units on the same platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to the exact W.C. setpoint required by the furnace control board. Off-spec generic switches with even slight tolerance drift can cause nuisance lockouts or, worse, allow ignition attempts under unsafe vent conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power down the furnace and disconnect the hose and two electrical terminals. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a manometer (recommended to verify inducer draw post-install). Always inspect the rubber hose for cracks before reinstalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PY3GNAA42090AA\u003c\/strong\u003e packaged gas\/electric unit. OEM part HK06WC061 has been superseded by HK06MB061 — both numbers are fulfilled by the same current-production Carrier factory part. Verify the 0.18\" W.C. rating stamped on your existing switch before ordering. Have questions about fitment? Our HVAC parts team confirms compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640448602483,"sku":"CARRIE-PY3GNAA42090AA-PRESSURE_SWITCH-HK06WC061","price":52.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640448635251,"sku":"CARRIE-PY3GNAA42090AA-PRESSURE_SWITCH-HK06WC061-GEN","price":46.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_51e34c6d-5cae-4155-9746-99757228c99d.jpg?v=1775036615","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gnaa42090aa-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}