OEM Carrier LP Gas Pressure Switch HK02LB008 for Model PG8JAA048070AEJA

This is the factory-specified OEM LP gas pressure switch (part number HK02LB008, manufacturer cross: HK06WC091) for the Carrier PG8JAA048070AEJA packaged gas unit. The pressure switch is a critical safety device that monitors the negative pressure (vacuum) produced by the inducer draft motor. Before allowing ignition, the furnace control board checks this switch to confirm the inducer is operating correctly and the flue path is clear. When the switch fails — or when tubing cracks, the inducer weakens, or the port clogs — the board never receives the "all-clear" signal, resulting in a no-heat lockout condition with no spark and no gas valve opening.

• Specs: LP (Propane) Gas Pressure Switch | Set point: 6.5" W.C. | SPST configuration | Fits Carrier/Bryant/Payne packaged and furnace applications | OEM Part #: HK02LB008 | Cross-reference: HK06WC091
• OEM vs Generic: This is a genuine OEM Carrier part manufactured to factory tolerances. Generic pressure switches frequently use imprecise diaphragm ratings that can cause nuisance trips or, worse, allow ignition under unsafe flue conditions. OEM is strongly recommended for gas-pressure safety applications.
• Install difficulty: 2/5 — Shut off gas supply and power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a manometer for post-install verification. Disconnect the rubber hose from the inducer port, unplug the wiring harness, and swap the switch. Always inspect the rubber sensing tube for cracks before reinstalling — a cracked tube is a common root cause of switch failure.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse. Fast, tracked delivery available nationwide.

Compatibility: Engineered as a direct OEM replacement for the Carrier PG8JAA048070AEJA packaged gas unit. Note: HK02LB008 has been superseded — HK02MB008 is the current OEM replacement and this listing ships the latest authorized version. Verify your unit's gas type (LP/Propane) and existing switch W.C. rating on the data plate before ordering. Our team is available to confirm fitment prior to purchase — reach out before you order.