OEM Carrier High & Low Pressure Switch Kit for Model PH13NB04200GAAAA

This OEM pressure switch kit includes both the high pressure switch (312926-252) and the low pressure switch (312926-258), factory-specified replacements for the Carrier PH13NB04200GAAAA 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.

• Specs: 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
• OEM vs Generic: 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.
• Install difficulty: 3/5 — 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.
• Warranty: 1-year OEM factory warranty on both switches. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH13NB04200GAAAA 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.