{"product_id":"carrier-lc350tm400621-pressure-switch-h43sg3","title":"OEM Carrier Pressure Switch HK06WC061 for LC350TM400621","description":"\u003ch1\u003eOEM Carrier Pressure Switch HK06WC061 for Model LC350TM400621\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch (part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier LC350TM400621\u003c\/strong\u003e furnace. The pressure switch is a safety device that monitors negative pressure created by the inducer draft motor before allowing the ignition sequence to proceed. When the switch fails or becomes stuck open, the furnace control board interprets this as an unsafe venting condition and locks out the heating cycle — leaving you with a blinking fault code and no heat. Common symptoms include a furnace that starts the inducer motor but never advances to ignition, or a system that throws a pressure switch fault code on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM part number HK06WC061 | Factory-calibrated W.C. (water column) rating | Single-port pressure switch | Designed for Carrier LC350TM400621 furnace venting configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier pressure switch, calibrated to the exact water column rating required by your furnace. Aftermarket substitutes often carry imprecise W.C. ratings that can cause nuisance lockouts or, worse, allow unsafe venting conditions to go undetected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power and gas before servicing. Tools needed: flathead screwdriver, needle-nose pliers, and a multimeter to confirm continuity after installation. Always inspect and clear the pressure switch hose of moisture or debris before installing the new switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eLC350TM400621\u003c\/strong\u003e furnace. Always cross-reference the W.C. rating printed on your existing switch and match it to this part number before installing. If you have any questions about fitment, our HVAC parts specialists are available to verify compatibility before you order. In stock and ready to ship today — get your heat back on fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909297394035,"sku":"CARRIE-LC350TM400621-PRESSURE_SWITCH-HK06WC061","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909297426803,"sku":"CARRIE-LC350TM400621-PRESSURE_SWITCH-HK06WC061-GEN","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-draft-inducer-HK06WC061_1f79edb9-8764-40a4-b43b-47fb913c762f.jpg?v=1782930826","url":"https:\/\/nationalhvacparts.com\/products\/carrier-lc350tm400621-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}