OEM Carrier Draft Pressure Switch 0.18 WC for Model PY4GEAB60115NA

This OEM Carrier draft (inducer) pressure switch is the factory-specified replacement for the Carrier PY4GEAB60115NA packaged unit. Rated at 0.18" W.C. (water column), this switch monitors negative pressure created by the inducer draft motor to confirm safe venting conditions before allowing ignition. When it fails or sticks open, the control board cannot verify proper draft, resulting in a no-heat lockout — often with a pressure switch fault code — before the ignition sequence ever begins. Replacing it with the correct OEM-spec switch restores reliable operation and prevents nuisance lockouts caused by tolerance mismatch from off-brand alternatives.

• Specs: 0.18" W.C. set point | Single-port draft proving switch | Normally open | Compatible with 120V/240V systems via 24V control circuit | Factory-matched trip point tolerance | Also cross-references Honeywell IS20224-5236
• OEM vs Generic: OEM pressure switches are calibrated to the exact W.C. rating required by your unit's inducer. Generic switches often carry wider tolerances (±0.05" W.C. or more), which can cause false lockouts in cold weather or allow unsafe venting conditions to go undetected — putting both equipment and occupants at risk.
• Install Difficulty: 2/5 — Power down and lock out the unit before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a digital manometer (recommended to verify set point after install). Photograph all hose and wiring connections before removal. Swap hose and wires to the new switch and restore power to test.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse. Note: OEM part number HK06WC061 is superseded by HK06MB061 — you will receive the current production equivalent, which is a direct drop-in replacement.

Compatibility: Designed for the Carrier PY4GEAB60115NA packaged unit. Also fits select Bryant and Payne models sharing the same 0.18" W.C. draft switch specification — verify your unit's data plate and existing switch markings before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy.