OEM Carrier Pressure Switch 0.18" WC for Model PY3GPAA60130NA — HK06WC061

This OEM Carrier draft inducer pressure switch (part number HK06WC061, superseded by HK06MB061) is the factory-specified replacement for the Carrier PY3GPAA60130NA packaged unit. The pressure switch proves that the inducer motor has established proper negative draft pressure before allowing the control board to proceed with ignition. When it fails or sticks open, the furnace or packaged unit will lock out on the first call for heat — no spark, no gas, no flame — leaving you with a cold building and a blinking fault code. Common failure symptoms include the system cycling the inducer motor repeatedly without progressing, or a diagnostic fault code pointing to a pressure switch fault.

• Specs: 0.18" Water Column (W.C.) setpoint | SPST (single-pole, single-throw) | Normally open | Mates with standard 3/16" hose barb fitting | OEM factory-matched switching threshold
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances at the factory. Generic aftermarket switches frequently drift in setpoint, causing nuisance lockouts or — worse — allowing combustion with inadequate draft, which is a safety hazard. This is one part where OEM is strongly recommended.
• Install difficulty: 2/5 — Power down the unit at the disconnect before beginning. Tools needed: 1/4" nut driver or 5/16" socket, needle-nose pliers, and a multimeter to verify continuity after installation. Always note the hose routing and wire terminal orientation before removing the old switch. Replace the hose if it shows any cracks or heat damage.
• Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility Note: Designed for Carrier model PY3GPAA60130NA packaged units. This part cross-references Honeywell IS20224-5236 and 1638D2/B. OEM part number HK06WC061 has been superseded by HK06MB061 — both are accepted as correct fitment. Always verify the W.C. rating on your existing switch before ordering. Our HVAC parts specialists are available to confirm fitment before you buy — no guesswork required. Order now and get same-day shipping.