OEM Carrier LP Gas Pressure Switch 6.5" WC for Model PG8JAA066135AGJA

This is the factory-specified OEM LP (propane) gas pressure switch for the Carrier PG8JAA066135AGJA packaged gas/electric unit. The pressure switch monitors the inducer motor's draft pressure and proves proper venting before allowing the ignition sequence to proceed. When this switch fails — or its sensing port becomes clogged — the furnace will lock out before ignition, often displaying a pressure switch fault code. Symptoms include a furnace that attempts to start, runs the inducer, but shuts down within seconds with no heat produced.

• Specs: LP (Propane) Gas Pressure Switch | Cut-out pressure: 6.5" W.C. | Replaces OEM part numbers HK02LB008, HK06WC091, and HK06WC100 (bracket version) | Factory-matched tolerance for reliable draft proving
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. specifications at the factory. Generic switches can drift in set-point over time, causing nuisance lockouts or — worse — failing to detect true venting problems, which is a safety risk.
• Install difficulty: 2/5 — Shut off gas and power before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer if verifying W.C. after installation. Always inspect and clear the rubber sensing hose before installing a new switch — a clogged hose is a common root cause of switch failure.
• Warranty & Shipping: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse. Note: OEM part HK02LB008 has been discontinued; this listing covers the current factory-authorized replacement.

Compatibility: Designed for the Carrier PG8JAA066135AGJA packaged gas/electric unit. Cross-references OEM part numbers HK02LB008, HK06WC091, and HK06WC100. Verify your unit's fuel type (LP/propane) and W.C. rating on the data plate before ordering. Our team is available to confirm fitment — reach out before you buy if you have any questions.