OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY4GEAA42060AA

This OEM draft inducer pressure switch is the factory-specified replacement for the Carrier PY4GEAA42060AA packaged unit. The pressure switch monitors negative pressure created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When the switch fails or sticks open, the control board cannot verify that combustion gases are being safely exhausted — resulting in a heating lockout or a no-heat condition where the inducer runs but ignition never begins. Note: OEM part number HK06WC061 has been superseded by the current production replacement HK06MB061 — both are fully interchangeable on this equipment.

• Specs: 0.18" Water Column (W.C.) rating | SPST switch type | Normally open | Replaces Honeywell IS20224-5236 | Fits Carrier, Bryant, and Payne branded equipment
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances at the factory. Off-spec generic switches can trip too early or too late, causing nuisance lockouts or — worse — allowing combustion without confirmed venting.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of 3/16" I.D. pressure tubing if the original is cracked. Always inspect the tubing and inducer port for blockages before replacing the switch alone.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Fits Carrier model PY4GEAA42060AA packaged unit. Also cross-compatible with a wide range of Carrier, Bryant, and Payne furnace and packaged unit models requiring a 0.18" W.C. SPST draft pressure switch. Verify the W.C. rating on your existing switch's label before ordering — installing a mismatched W.C. rating is the most common pressure switch installation error. Questions? Our HVAC parts specialists confirm fitment before you buy.