OEM Carrier Gas Pressure Switch HK02LB008 / HK06WC091 for Model PG8MEA048070ABJA

This is the factory OEM gas pressure switch for the Carrier PG8MEA048070ABJA packaged gas unit. The pressure switch is a critical safety device that monitors the negative pressure (vacuum) produced by the draft inducer motor. If the inducer fails to generate adequate airflow, the pressure switch remains open — preventing gas valve energization and protecting the heat exchanger from dangerous flue gas spillage. When this switch fails or sticks, the furnace will lock out on a pressure fault, typically flashing a fault code for a failed or open pressure switch, and the unit will not produce heat.

• OEM Part Numbers: Primary — HK02LB008 (Gas Pressure Switch, 6.5" WC cut-out); Cross-reference — HK06WC091 (SPST Pressure Switch, High Fire). Both are factory-authorized Carrier/Bryant/Payne parts covering the same application on this model. Successor OEM references: HK02MB008 and HK06MC110.
• OEM vs. Generic: This is a genuine factory-authorized OEM part, manufactured to exact pressure-sensing tolerances for the PG8MEA048070ABJA. Aftermarket pressure switches frequently carry ±15% set-point variance, which can cause nuisance lockouts or — more dangerously — fail to protect the heat exchanger under marginal draft conditions.
• Install Difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, flat-head screwdriver, manometer (recommended to verify set-point after replacement). Label and photograph all tubing connections before removal. Hose barb diameters and port orientation must match the original.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse. Questions about fitment? Our HVAC parts specialists verify compatibility before you order.

Compatibility: Engineered for the Carrier PG8MEA048070ABJA packaged gas heating/cooling unit. Also fits select Carrier, Bryant, and Payne furnace and packaged unit models sharing the same inducer configuration and pressure set-point — verify your model's data plate and existing switch markings before ordering. If your specific model is not listed, contact us and we will confirm fitment directly.