OEM Carrier LP Gas Pressure Switch for Model PG8JAA024045AGJA

This OEM LP gas pressure switch (part number HK02LB008) is the factory-specified replacement for the Carrier PG8JAA024045AGJA packaged gas unit. The pressure switch monitors the negative pressure created by the inducer motor, proving that combustion airflow is adequate before allowing the gas valve to open. When this switch fails or sticks, the furnace will attempt ignition and then go into lockout — or in many cases, will not advance past the inducer-on stage at all.

• Specs: LP (propane) gas pressure switch | 6.5 in. W.C. cutout pressure | SPST normally-open | OEM cross-reference: GFS3451-4036 | Related part numbers: HK06WC091 (Pressure Switch), HK06WC100 (Pressure Switch w/ Bracket)
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory tolerances. Aftermarket pressure switches frequently carry ±10–15% W.C. variance, which can cause nuisance lockouts or — more dangerously — allow operation under unsafe draft conditions.
• Install difficulty: 2/5 — Standard pressure switch swap. Tools needed: #2 Phillips screwdriver, 1/4 in. nut driver, and a digital manometer to verify draft pressure after replacement. Always confirm inducer operation and check the condensate drain for blockages before replacing the switch.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered for the Carrier PG8JAA024045AGJA packaged gas/electric unit. Also cross-references related switch variants HK06WC091 and HK06WC100 (bracket-mount version). Verify your existing switch's W.C. rating and LP vs. natural gas designation from the unit data plate before ordering. Not sure it fits? Our HVAC parts team confirms fitment before every order — reach out before you buy.