OEM Carrier Pressure Switch with Bracket 2.21" WC — Model PG9YAA036060ACSS

This is the factory OEM replacement pressure switch with integrated mounting bracket for the Carrier PG9YAA036060ACSS gas furnace. The draft pressure switch monitors negative pressure created by the inducer motor to confirm safe venting conditions before the control board allows ignition to proceed. When this switch fails — or when the hose, port, or inducer is at fault — the furnace will lock out prior to ignition, typically displaying a fault code indicating a stuck-open or stuck-closed pressure switch. Replacing with the correct OEM part (HK06NA005) ensures the exact water-column setpoint is met, preventing nuisance lockouts or, critically, unsafe ignition under poor draft conditions.

• Specs: 2.21" W.C. pressure-fall (PF) setpoint | SPST snap-action diaphragm switch | Includes factory mounting bracket | Rated 120V/24V control circuit compatible
• OEM vs Generic: OEM Carrier switches are calibrated to exact ±0.1" W.C. factory tolerance. Generic aftermarket switches frequently vary beyond this range, causing premature lockouts or — worse — allowing ignition under marginal draft, shortening heat exchanger life.
• Install difficulty: 2/5 — Tools needed: 1/4" nut driver, flathead screwdriver, and a multimeter to verify switch continuity before and after install. Always inspect the rubber hose and inducer port for cracks or blockage before condemning the switch.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PG9YAA036060ACSS gas furnace. Verify part number HK06NA005 against your unit's data plate or existing switch label before ordering. Our fitment team is available to cross-reference your model and serial number prior to purchase — just ask. Order by 3PM local time for same-day shipping.