{"product_id":"carrier-ch13na04200gacaa-pressure-switch-1vlc9v","title":"OEM Carrier Pressure Switch High \u0026 Low for CH13NA04200GACAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch for Model CH13NA04200GACAA\u003c\/h1\u003e\u003cp\u003eThis listing covers the factory OEM replacement pressure switches for the \u003cstrong\u003eCarrier CH13NA04200GACAA\u003c\/strong\u003e packaged or split-system unit — including the \u003cstrong\u003eHigh Pressure Switch (OEM# 312926-252)\u003c\/strong\u003e and the \u003cstrong\u003eLow Pressure Switch (OEM# 312926-258)\u003c\/strong\u003e. Pressure switches prove that the inducer motor has created adequate draft before allowing the ignition sequence to proceed. A failed pressure switch causes the control board to lock out the system before a flame is ever established — commonly misdiagnosed as an igniter or gas valve failure. Symptoms include a running inducer with no ignition attempt, a flashing fault code for \"pressure switch open,\" or intermittent short-cycling during cold weather.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High Pressure Switch — OEM Part# 312926-252 | Low Pressure Switch — OEM Part# 312926-258 | Factory-calibrated W.C. (water column) rating | SPST normally open contacts | Direct OEM replacement — no modification required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are factory-calibrated to the exact W.C. rating required by the \u003cstrong\u003eCH13NA04200GACAA\u003c\/strong\u003e heat exchanger and inducer assembly. Generic substitutes frequently carry incorrect trip points, causing nuisance lockouts or — more dangerously — allowing operation under unsafe draft conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power and gas before servicing. Tools needed: flat-head screwdriver, 1\/4\" nut driver, manometer (recommended to verify W.C. after install). Inspect the rubber hose port for cracks or blockage before installing the new switch, as a deteriorated hose is the most common root cause of pressure switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eCH13NA04200GACAA\u003c\/strong\u003e. Select the correct switch — high (312926-252) or low (312926-258) — based on your fault code and confirmed hose port location. Verify your existing switch's part number stamp before ordering. Not sure which one you need? Our HVAC parts specialists confirm fitment at no charge before you buy. \u003cstrong\u003eIn stock — ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909629333875,"sku":"CARRIE-CH13NA04200GACAA-PRESSURE_SWITCH-312926-252","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909629366643,"sku":"CARRIE-CH13NA04200GACAA-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_cbf68888-6871-48f0-9728-060a329d63e9.jpg?v=1782930434","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04200gacaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}