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This is the factory OEM replacement pressure switch (part number HK06WC061) for the Carrier CP48P448P407511CP packaged unit. The pressure switch is a critical safety component that monitors the negative pressure (inches water column) created by the inducer draft motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails — or when it is tripped by a blocked flue, failed inducer, or cracked diaphragm — the control board halts the heating cycle entirely, resulting in a no-heat condition with the system stuck in pre-ignition lockout. Replacing a faulty pressure switch with the correct OEM-spec part restores safe, reliable furnace operation.
Compatibility: Engineered specifically for the Carrier CP48P448P407511CP packaged unit. Always cross-reference the W.C. rating stamped on your existing switch and confirm part number HK06WC061 against your unit's wiring diagram before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before your order ships — call or chat today.