OEM Carrier Gas Pressure Switch HK02LB008 for Model PG8JAA036070AEJA

This is the OEM factory-specified gas pressure switch for the Carrier PG8JAA036070AEJA packaged gas furnace unit. The pressure switch is a critical safety component that proves the inducer motor is operating at the correct negative pressure (measured in inches water column, W.C.) before allowing the control board to proceed with ignition. When it fails or sticks, the furnace will lock out before the ignition sequence begins — leaving you with no heat. Common symptoms include a status code indicating pressure switch fault, the inducer running but the unit never firing, or intermittent heating failures in cold or humid conditions.

• OEM Part Numbers: Primary — HK02LB008 | Superseded / Cross-Reference — HK06WC091 | Both part numbers are factory-authorized for the Carrier PG8JAA036070AEJA.
• OEM vs Generic: This is a genuine Carrier OEM pressure switch manufactured to exact W.C. rating and port diameter specifications. Aftermarket switches frequently carry wider tolerance ratings that can cause nuisance lockouts or, worse, fail to trip under unsafe draft conditions — always use OEM on gas appliances.
• Install Difficulty: 3/5 — Shut off gas and power before servicing. Tools needed: 1/4" and 5/16" nut drivers, flathead screwdriver, digital manometer (recommended to verify W.C. rating post-install), and needle-nose pliers. Photograph all tubing connections before disconnecting. The hose barb and wiring connector must be fully seated to avoid false trips.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our warehouse when ordered before 3 PM EST.

Compatibility: Designed and factory-matched for Carrier model PG8JAA036070AEJA. Always verify the W.C. rating stamped on your existing switch against the replacement before installation — this model's inducer and heat exchanger configuration demands an exact-rated switch. If you are unsure of fitment, contact our HVAC parts specialists and have your unit's data plate ready. Order today and receive free same-day shipping on this in-stock OEM Carrier pressure switch.