OEM Carrier Gas Pressure Switch HK02LB008 / HK06WC091 for Model PG8MAA066110AFJA

This OEM Carrier gas pressure switch (part number HK02LB008, cross-references HK06WC091) is the factory-specified replacement for the Carrier PG8MAA066110AFJA packaged gas furnace. The pressure switch monitors the negative pressure produced by the draft inducer motor to confirm proper venting before allowing ignition to proceed. When it fails or sticks open, the furnace will lock out before the ignition sequence begins — leaving you with no heat and a flashing fault code on the control board.

• Specs: SPST normally-open pressure switch | Cut-out set point: 6.5" W.C. | Suitable for natural gas and LP (propane) applications | Can be mounted in horizontal or vertical orientation
• OEM Part Numbers: Primary — HK02LB008 (Gas Pressure Switch) | Secondary cross-reference — HK06WC091 (Pressure Switch) | Both are factory-authorized Carrier/Honeywell components for the PG8MAA series
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: flathead screwdriver, needle-nose pliers, and a manometer (recommended to verify W.C. setpoint after install). Photograph all tubing connections before removal. Swap the pressure port hose and electrical connector directly to the new switch.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock — ships same business day from our warehouse. Carrier Factory Authorized Parts packaging.

Compatibility: Engineered for Carrier PG8MAA066110AFJA packaged gas furnaces. Also fits a wide range of Bryant, Carrier, and Payne furnace models in the PG8MAA, PG8MEA, 58CTA, 58CVA, and 58STA series — verify your unit's data plate and existing W.C. rating before ordering. Not sure if this is the right part? Contact our fitment team before you buy — we confirm compatibility at no charge.