OEM Carrier LP Gas Pressure Switch (HK02LB008 / HK06WC091) for Model PG8MAA048090AEJA

This OEM Carrier gas pressure switch is the factory-specified replacement for the Carrier PG8MAA048090AEJA packaged gas unit. The pressure switch monitors the pressure differential created by the inducer/draft blower to verify safe venting conditions before allowing ignition. When the switch fails — or when the diaphragm stiffens due to age — the furnace will lock out before the ignition sequence begins, leaving you with no heat. A failed switch is one of the most common no-heat diagnoses on Carrier packaged gas equipment.

• Specs: LP Gas Pressure Switch | Cut-out pressure: 6.5" WC | SPST normally open | Compatible with Carrier, Bryant, and Payne platforms | OEM Part Numbers: HK02LB008 (Gas Pressure Switch) and HK06WC091 (Pressure Switch)
• OEM vs Generic: OEM pressure switches are calibrated to exact factory cut-out tolerances. Generic aftermarket switches frequently deviate from the rated W.C. setting, risking unsafe operation or nuisance lockouts that a correct-spec OEM unit eliminates.
• Install Difficulty: 2/5 — Shut off gas and power before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a vacuum/pressure gauge to verify hose integrity. Always inspect the rubber hose port for cracks or blockage before installing the new switch — a restricted hose causes repeat failures.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM EST.

Compatibility: Directly fits Carrier PG8MAA048090AEJA packaged gas furnace units. Cross-references include OEM part numbers HK02LB008 and HK06WC091. Note: HK02LB008 has been superseded — verify your unit's data plate and existing switch label before ordering. Questions about fitment? Our HVAC parts team confirms compatibility before you buy — contact us today and get your part shipped fast.