OEM Carrier High & Low Pressure Switch Kit (312926-252 / 312926-258) for Model PH13NB06100GBBAA

This listing includes both factory OEM refrigerant pressure switches for the Carrier PH13NB06100GBBAA heat pump / air conditioning system: the 312926-252 High Pressure Switch (670-470 PSI) and the 312926-258 Low Pressure Switch (55-23 PSI). Together, these switches form the system's primary refrigerant circuit protection, continuously monitoring operating pressures and shutting down the compressor before unsafe conditions cause catastrophic damage. A failed high pressure switch typically causes nuisance high-pressure lockouts or allows the compressor to run in an over-pressurized state. A failed low pressure switch results in the compressor running during low-charge or restricted-airflow conditions, causing compressor flooding or burnout. Replace both as a set for a complete pressure-safety restoration.

• Part Numbers & Specs: 312926-252 High Pressure Switch — 670 PSI cut-out / 470 PSI cut-in | 312926-258 Low Pressure Switch — 55 PSI cut-out / 23 PSI cut-in | Both are factory-authorized OEM Carrier replacement parts
• OEM vs Generic: OEM pressure switches are factory-calibrated to exact cut-in/cut-out setpoints. Aftermarket switches frequently carry ±10–15% pressure tolerances, risking nuisance trips or, worse, failing to protect the compressor under true fault conditions.
• Install Difficulty: 3/5 — Refrigerant circuit work must be performed by an EPA 608-certified technician. Tools required: manifold gauge set, refrigerant recovery equipment, adjustable wrench, multimeter. Always recover refrigerant before disconnecting pressure switch fittings. Confirm correct port (high-side vs. low-side) before installation.
• Warranty: 1-year OEM manufacturer warranty on both parts. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PH13NB06100GBBAA. Verify refrigerant type and system tonnage against your unit's data plate before ordering. Not sure these are the right parts? Our HVAC parts specialists confirm fitment before you buy — contact us today and get back up and running fast.