OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY3GPAA60090NA

This OEM Carrier pressure switch (part number HK06WC061, superseded by HK06MB061) is the factory-specified replacement for the Carrier PY3GPAA60090NA packaged unit. The pressure switch proves that the inducer motor has established proper draft before allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board detects an unsafe venting condition and locks out the furnace — resulting in a no-heat call with no ignition attempt and a fault code pointing to a pressure switch fault.

• Specs: 0.18" W.C. (water column) set point | SPST (Single-Pole, Single-Throw) | Normally open | Replaces Honeywell IS20224-5236 | Superseded OEM part: HK06MB061
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances at the factory. Off-brand substitutes with loose tolerances can nuisance-trip in cold weather or fail to prove draft under marginal venting conditions — causing repeated lockouts.
• Install Difficulty: 2/5 — Shut off power and gas before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of 3/16" I.D. silicone tubing for the hose connection. Note tubing routing and wire terminal positions before disconnecting. Typical replacement time: 15–20 minutes.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse when placed by 5 PM EST.

Compatibility: Designed for the Carrier PY3GPAA60090NA packaged unit. Also fits select Bryant and Payne models sharing the same 0.18" W.C. SPST pressure switch specification — verify the W.C. rating on your existing switch before ordering. Our fitment team is available to confirm compatibility before you purchase.