OEM Carrier Draft Pressure Switch 0.18" WC — HK06WC061 for Model PY4GPAB36060AA

This OEM draft inducer pressure switch (part number HK06WC061, superseded by HK06MB061) is the factory-specified replacement for the Carrier PY4GPAB36060AA packaged unit. The pressure switch is a critical safety device that monitors the negative pressure (vacuum) created by the inducer motor during startup. Only after confirming that the inducer is spinning at the correct RPM and generating the proper draft does the switch close and allow the control board to continue the ignition sequence. When this switch fails, the system locks out before ignition — leaving you with no heat and often a fault code related to the pressure switch circuit.

• Specs: 0.18" Water Column (W.C.) rating | Normally open (N.O.) | Single-port design | Honeywell-manufactured (cross-reference: IS20224-5236) | Factory tolerance matched
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. setpoints. An off-spec generic switch may close too early (masking unsafe flue conditions) or fail to close at all — always match the W.C. rating precisely.
• Install difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, small flathead screwdriver, multimeter (for continuity check). Remove the rubber hose from the inducer port, swap the switch, reconnect hose and wiring harness — photo the connections first.
• Warranty: 1-year OEM factory warranty coverage. In-stock units ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PY4GPAB36060AA packaged unit and cross-compatible with select Bryant and Payne models sharing the same 0.18" W.C. pressure switch specification. Also cross-references Honeywell part IS20224-5236. Verify your unit's W.C. rating on the data plate or existing switch body before ordering — an incorrect W.C. rating will prevent proper system operation. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy.