OEM Carrier Pressure Switch HK06WC061 for Model LC348LC400400

This is the factory OEM replacement pressure switch (part number HK06WC061) for the Carrier LC348LC400400 furnace. The pressure switch is a critical safety device that monitors negative pressure created by the inducer draft motor to confirm adequate venting before allowing the ignition sequence to proceed. When this switch fails or sticks closed/open, the furnace control board detects a fault and locks out the system — resulting in no heat, a flashing fault code, or a furnace that cycles the inducer repeatedly without ever reaching ignition.

• Specs: OEM-rated water column (W.C.) pressure setpoint factory-matched to Carrier LC348LC400400 | Single-port or dual-port configuration per factory spec | 24V control circuit compatible | Replaces part number HK06WC061 directly
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances required by your furnace's control board. Aftermarket switches with imprecise setpoints can cause nuisance lockouts or — more dangerously — allow the furnace to fire under unsafe draft conditions. Always use OEM for pressure-critical safety components.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, and a digital manometer (recommended to verify draft pressure post-install). Photograph all hose and wiring connections before removal.
• Warranty: 1-year OEM factory warranty against defects. Orders ship same business day when placed before cutoff from our climate-controlled parts warehouse.

Compatibility & Ordering: This pressure switch is specified for the Carrier LC348LC400400 furnace. Before ordering, verify your existing switch's W.C. rating and port count against your unit's wiring diagram — incorrect W.C. ratings will cause lockout faults even on a brand-new switch. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy. In stock and ready to ship today — get your heat back on schedule.