OEM Carrier Low Pressure Switch 312926-258 for Model CH16NA03600GBAAA

This OEM low pressure switch (part number 312926-258) is the factory-specified replacement for the Carrier CH16NA03600GBAAA condenser unit. The pressure switch is a critical safety component that monitors negative air pressure produced by the inducer draft motor. When the inducer achieves proper airflow, the switch closes to signal the control board that it is safe to proceed with the ignition sequence. A failed or out-of-calibration pressure switch will prevent the system from advancing past the inducer stage, resulting in a no-heat lockout condition and often triggering a fault code on the control board.

• Specs: Low pressure switch | OEM part number 312926-258 | Factory-calibrated W.C. (water column) rating | Single-port hose barb connection | 24V control circuit compatible
• OEM vs Generic: This is a genuine Carrier OEM pressure switch, factory-calibrated to the exact W.C. rating required by the CH16NA03600GBAAA. Aftermarket substitutes frequently deviate from the specified trip point, causing nuisance lockouts or, worse, unsafe operation. Always use OEM for pressure switches.
• Install Difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer (recommended for verification). Locate the switch on the inducer housing, disconnect the pressure hose and wiring harness, and swap in the new switch. Inspect the pressure hose for cracks or blockages before reinstalling.
• Warranty: Backed by a 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier CH16NA03600GBAAA unit. Verify OEM part number 312926-258 against your unit's data plate or existing switch label before ordering. If you have questions about fitment, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping available on all stocked OEM components.