{"product_id":"carrier-ph13na042000abaa-pressure-switch-1vlc9v","title":"OEM Carrier High Pressure Switch 670-470# for PH13NA042000ABAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit for Model PH13NA042000ABAA\u003c\/h1\u003e\u003cp\u003eThese OEM Carrier pressure switches are the factory-specified replacements for the \u003cstrong\u003eCarrier PH13NA042000ABAA\u003c\/strong\u003e heat pump. The \u003cstrong\u003ehigh pressure switch (312926-252, 670-470#)\u003c\/strong\u003e monitors refrigerant discharge pressure and cuts power to the compressor if pressure rises to a dangerous level, preventing catastrophic compressor failure. The companion \u003cstrong\u003elow pressure switch (312926-258, 55-23#)\u003c\/strong\u003e guards against low-side refrigerant loss — typically caused by a leak or restriction — shutting down the compressor before it runs dry. Together, these two switches are your system's primary refrigerant safety circuit. Symptoms of failure include the unit short-cycling, tripping a fault code, or locking out entirely with no cooling or heating output.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Pressure Switch Specs:\u003c\/strong\u003e Part # 312926-252 | Cut-out: 670 PSIG | Cut-in: 470 PSIG | Factory Authorized Carrier OEM part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Pressure Switch Specs:\u003c\/strong\u003e Part # 312926-258 | Cut-out: 55 PSIG | Cut-in: 23 PSIG | Factory Authorized Carrier OEM part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are precision-calibrated to exact cut-out and cut-in set points. Aftermarket alternatives can drift ±10–15% from spec, risking nuisance trips or — worse — failure to protect the compressor under a true over-pressure event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant circuit work requires an EPA 608 certified technician. Tools needed: manifold gauge set, refrigerant recovery unit, wire strippers, multimeter, and appropriate safety gear. Always recover refrigerant before replacing a pressure switch on the high-side. Photograph all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Both switches are designed for the \u003cstrong\u003eCarrier PH13NA042000ABAA\u003c\/strong\u003e heat pump platform. Verify your unit's data plate refrigerant type (R-410A) and model string before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641934008691,"sku":"CARRIE-PH13NA042000ABAA-PRESSURE_SWITCH-312926-252","price":61.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641934041459,"sku":"CARRIE-PH13NA042000ABAA-PRESSURE_SWITCH-312926-252-GEN","price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_09a67a14-cea9-44ec-a8b3-501dd9193979.jpg?v=1775033482","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13na042000abaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}