{"product_id":"carrier-ph13nb04200gaaaa-pressure-switch-1vlc9v","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH13NB04200GAAAA","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit for Model PH13NB04200GAAAA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch kit includes both the \u003cstrong\u003ehigh pressure switch (312926-252)\u003c\/strong\u003e and the \u003cstrong\u003elow pressure switch (312926-258)\u003c\/strong\u003e, factory-specified replacements for the \u003cstrong\u003eCarrier PH13NB04200GAAAA\u003c\/strong\u003e heat pump system. Pressure switches are critical safety and operational components: the high pressure switch protects the compressor from dangerously elevated refrigerant pressure, while the low pressure switch guards against low-charge or low-suction conditions. When either switch fails, the unit will typically lock out, refuse to start, or short-cycle — often triggering a fault code on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Part 312926-252 — High Pressure Switch | Part 312926-258 — Low Pressure Switch | Factory-calibrated setpoints | SPST normally-closed configuration | Rated for R-410A refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are factory-calibrated to exact trip and reset pressures for this model. Generic alternatives frequently carry wider tolerances, risking nuisance trips or — more dangerously — failing to protect the compressor under true fault conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system work must be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, torque wrench, multimeter for continuity verification. Always recover refrigerant before disconnecting pressure switches on the high-side port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier PH13NB04200GAAAA\u003c\/strong\u003e 4-ton, 13 SEER R-410A heat pump. Verify your unit's data plate model number and refrigerant type before ordering. Not sure about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641915003251,"sku":"CARRIE-PH13NB04200GAAAA-PRESSURE_SWITCH-312926-252","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641915036019,"sku":"CARRIE-PH13NB04200GAAAA-PRESSURE_SWITCH-312926-252-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-312926-252_774a3efd-cc1f-4c20-9c64-cb3bc8b5f578.jpg?v=1775033019","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nb04200gaaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}