{"product_id":"carrier-ch13na04800gacba-pressure-switch-1vlc9v","title":"OEM Carrier Pressure Switch High \u0026 Low for CH13NA04800GACBA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch for Model CH13NA04800GACBA\u003c\/h1\u003e\u003cp\u003eThese OEM pressure switches — part numbers \u003cstrong\u003e312926-252 (High Pressure Switch)\u003c\/strong\u003e and \u003cstrong\u003e312926-258 (Low Pressure Switch)\u003c\/strong\u003e — are the factory-specified replacements for the \u003cstrong\u003eCarrier CH13NA04800GACBA\u003c\/strong\u003e condensing unit. Pressure switches prove that the inducer motor has established adequate airflow through the heat exchanger before allowing ignition to proceed. When either switch fails — or the circuit they monitor falls out of range — the control board withholds the ignition signal, resulting in a no-heat lockout condition. Common symptoms include repeated ignition attempts with no flame, a blinking fault code indicating an open pressure switch circuit, or a furnace that runs the inducer but never advances to the heating stage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e \u003cstrong\u003e312926-252\u003c\/strong\u003e — High Pressure Switch | \u003cstrong\u003e312926-258\u003c\/strong\u003e — Low Pressure Switch | Factory-calibrated W.C. (water column) setpoint | SPST normally-open configuration | Designed for R-410A system pressures on Carrier CH13NA04800GACBA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are precision-calibrated to the exact water-column rating required by this model. Off-brand substitutes frequently carry wider tolerances, risking nuisance trips or — more dangerously — failure to detect a true blocked-flue condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off power and gas before servicing. Tools needed: 1\/4\" nut driver, flathead screwdriver, manometer (recommended to verify W.C. reading post-install), and a multimeter to confirm switch continuity. Always inspect inducer hoses and ports for blockage before replacing the switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cut-off ship the same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Both switches are engineered specifically for the \u003cstrong\u003eCarrier CH13NA04800GACBA\u003c\/strong\u003e condensing unit. Confirm which switch — high (312926-252) or low (312926-258) — is indicated by your control board fault code or diagnostic before ordering. If uncertain, our HVAC parts specialists will verify the correct fitment before your order ships. In-stock and ready to ship today — get your system back on before the next heating cycle.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909625500019,"sku":"CARRIE-CH13NA04800GACBA-PRESSURE_SWITCH-312926-252","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909625532787,"sku":"CARRIE-CH13NA04800GACBA-PRESSURE_SWITCH-312926-252-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-312926-252_8b50d3f9-295a-487b-b748-b0c01230720d.jpg?v=1782930441","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04800gacba-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}