OEM Carrier High & Low Pressure Switch for Model CH13NA03000GAABA

These OEM pressure switches — 312926-252 (High Pressure Switch) and 312926-258 (Low Pressure Switch) — are the factory-specified replacements for the Carrier CH13NA03000GAABA split-system condenser. Pressure switches monitor refrigerant pressure on both the high and low sides of the refrigerant circuit, cutting power to the compressor if pressures fall outside safe operating limits. When either switch fails, the system will typically trip into lockout, short-cycle, or refuse to start altogether, protecting the compressor from catastrophic damage.

• Specs: High Pressure Switch — OEM Part# 312926-252 | Low Pressure Switch — OEM Part# 312926-258 | Factory-calibrated trip points | Direct plug-in wiring connectors for drop-in replacement
• OEM vs Generic: OEM pressure switches are calibrated to the exact trip and reset pressures specified by Carrier engineering. Aftermarket substitutes often use wider tolerances that can allow unsafe pressures to go undetected, risking compressor failure and voiding equipment warranties.
• Install Difficulty: 3/5 — Refrigerant circuit work requires an EPA 608-certified technician. Tools needed: manifold gauge set, multimeter, flat-head and Phillips screwdrivers. Always recover refrigerant before disconnecting pressure switch lines, and photograph all wiring before removal.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier CH13NA03000GAABA 3-ton split-system condenser. Verify the failed switch (high-side or low-side) with a multimeter before ordering — both part numbers are listed above. If uncertain which switch has failed, our fitment team can help confirm before you purchase. Order now and we'll ship today — most orders arrive within 1–3 business days.