{"product_id":"carrier-ph14na036000baaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH14NA036000BAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit 312926-252 \/ 312926-258 for Model PH14NA036000BAAA\u003c\/h1\u003e\u003cp\u003eThis listing includes both factory-specified OEM refrigerant pressure switches for the \u003cstrong\u003eCarrier PH14NA036000BAAA\u003c\/strong\u003e heat pump: the \u003cstrong\u003e312926-252 High Pressure Switch (670\/470 PSI)\u003c\/strong\u003e and the \u003cstrong\u003e312926-258 Low Pressure Switch (55\/23 PSI)\u003c\/strong\u003e. Together, these switches continuously monitor refrigerant circuit pressure and interrupt compressor operation the instant pressure leaves the safe operating window — protecting the compressor from catastrophic failure caused by overcharge, undercharge, blocked airflow, or refrigerant loss. When either switch fails or trips without resetting, you'll typically experience nuisance lockouts, a system that shuts off seconds after startup, fault codes on the thermostat, or a compressor that refuses to energize at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Pressure Switch (312926-252):\u003c\/strong\u003e Cuts out at \u003cstrong\u003e670 PSI\u003c\/strong\u003e \/ resets at \u003cstrong\u003e470 PSI\u003c\/strong\u003e — protects against overcharge, condenser blockage, and high ambient conditions. Manual-reset safety device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Pressure Switch (312926-258):\u003c\/strong\u003e Cuts out at \u003cstrong\u003e23 PSI\u003c\/strong\u003e \/ resets at \u003cstrong\u003e55 PSI\u003c\/strong\u003e — protects against refrigerant undercharge, evaporator freeze, and restricted airflow. Auto-reset safety device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Carrier Factory Authorized Parts (FAP) are manufactured to exact cut-in\/cut-out tolerances. Aftermarket pressure switches often carry ±5–10% pressure tolerances, risking nuisance trips or — worse — failing to protect the compressor when it matters most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — System must be recovered and de-pressurized before replacing refrigerant-side switches. Tools required: manifold gauge set, refrigerant recovery machine, Schrader valve core tool, multimeter. \u003cstrong\u003eEPA 608 certification required.\u003c\/strong\u003e Always verify the switch is the fault source with a manifold gauge before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Both switches are factory-matched replacements for the \u003cstrong\u003eCarrier PH14NA036000BAAA\u003c\/strong\u003e single-stage R-410A residential heat pump. Verify existing switch cut-out ratings on your unit's wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you buy — no guesswork required. \u003cstrong\u003eOrder now and ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641780654451,"sku":"CARRIE-PH14NA036000BAAA-PRESSURE_SWITCH-312926-252","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641780687219,"sku":"CARRIE-PH14NA036000BAAA-PRESSURE_SWITCH-312926-252-GEN","price":52.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_cb56d186-76ff-420d-8a55-b819af06b6f0.jpg?v=1775033053","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph14na036000baaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}