OEM Carrier Pressure Switch HK06WC061 for Model LC350TM400559

This OEM pressure switch (part number HK06WC061) is the factory-specified replacement for the Carrier LC350TM400559 furnace. The pressure switch is a critical safety device that monitors the negative pressure generated by the inducer draft motor. It confirms that proper airflow and venting conditions exist before allowing the ignition sequence to proceed. When this switch fails or sticks, the furnace will lock out before ignition — often displaying a fault code — leaving you with no heat until the issue is resolved.

• Specs: OEM-rated water column (W.C.) pressure setpoint | Single-port or dual-port configuration factory-matched to Carrier LC350TM400559 | 24V control circuit compatible | Durable diaphragm construction for long service life
• OEM vs Generic: This is a genuine OEM Carrier part, manufactured to exact factory pressure calibration tolerances. Aftermarket pressure switches frequently carry imprecise W.C. ratings that can cause nuisance lockouts or — more critically — fail to detect unsafe venting conditions, posing a carbon monoxide risk.
• Install Difficulty: 2/5 — Disconnect power and gas before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, manometer (optional for verification). Photograph all hose and wire connections before removal. Swap hoses and wiring to the new switch and confirm the furnace completes a full ignition cycle.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier LC350TM400559 furnace. Always verify the part number on your existing switch and cross-reference your unit's data plate before ordering to confirm correct W.C. rating and port configuration. Our fitment team is available to verify compatibility before you purchase — same-day shipping on all in-stock orders.