{"product_id":"carrier-py3gna042090na-pressure-switch-h43sg3","title":"OEM Carrier Draft Pressure Switch 0.18 WC for PY3GNA042090NA","description":"\u003ch1\u003eOEM Carrier Draft Pressure Switch 0.18\" WC for Model PY3GNA042090NA\u003c\/h1\u003e\u003cp\u003eThis OEM draft inducer pressure switch is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNA042090NA\u003c\/strong\u003e packaged gas unit. Originally sold as part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e and now superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e, this switch proves that the inducer motor has established proper negative pressure before allowing the ignition sequence to begin. When the pressure switch fails or sticks, the furnace will lock out before ignition — leaving you with no heat. Common symptoms include a cycling inducer with no spark, a blinking fault code indicating a pressure switch fault, or a system that starts briefly then shuts down.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" W.C. (inches water column) setpoint | Normally open (N.O.) | Single-port design | Factory-matched Honeywell-manufactured switch (cross-ref: IS20224-5236) | Original P\/N HK06WC061 superseded by HK06MB061 — direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact W.C. tolerances at the factory. Generic alternatives often drift out of spec over time, causing nuisance lockouts or, worse, unsafe ignition attempts. This is a safety-critical component — OEM is strongly recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Straightforward swap accessible from the blower\/burner compartment. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver. Always power down the unit at the breaker before servicing. Photograph tubing and wiring connections before disconnecting. Inspect hose barb and rubber tubing for cracks before reassembly.\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. Fast, reliable shipping nationwide.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PY3GNA042090NA\u003c\/strong\u003e packaged gas\/electric unit. Also fits a wide range of Carrier, Bryant, and Payne furnaces and packaged units specifying the 0.18\" W.C. draft pressure switch. Always verify your unit's existing switch W.C. rating on the data plate or wiring diagram before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640476225907,"sku":"CARRIE-PY3GNA042090NA-PRESSURE_SWITCH-HK06WC061","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640476258675,"sku":"CARRIE-PY3GNA042090NA-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_e84911c9-eac0-4719-842d-c694f63d7de7.jpg?v=1775027517","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna042090na-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}