OEM Carrier Draft Pressure Switch 0.18 WC for Model PY3GEAA48130NA

This OEM draft inducer pressure switch is the factory-specified replacement for the Carrier PY3GEAA48130NA 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 it fails or sticks closed/open, the control board detects a fault and locks out the system — commonly presenting as a furnace or heat section that starts the inducer but never advances to ignition, or a unit that flashes a pressure switch fault code.

• Specs: 0.18" W.C. (inches water column) rated | Single-port draft proving switch | Replaces OEM part numbers HK06WC061 & HK06MB061 | Also cross-references Honeywell IS20224-5236 / 1938D2/B
• OEM vs Generic: This is a genuine Carrier factory-authorized part, manufactured to exact W.C. setpoint tolerances. Generic aftermarket switches are prone to W.C. drift, causing nuisance lockouts or — more dangerously — failure to detect a true venting blockage.
• Install difficulty: 2/5 — Shut off gas and power before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer to verify set-point after installation. Photograph hose routing before disconnecting. The hose barb connects to the inducer housing port; ensure no cracks in the tubing.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier PY3GEAA48130NA packaged unit. Note that HK06WC061 has been superseded by HK06MB061 — both part numbers are interchangeable and covered by this listing. Fits Bryant and Payne branded equivalents sharing the same pressure switch specification. Always verify the W.C. rating on your existing switch before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and receive same-day shipping on in-stock parts.