OEM Carrier LP Gas Pressure Switch (HK02LB008) for Model PG8MAA060090AGJA

This OEM gas pressure switch is the factory-specified replacement for the Carrier PG8MAA060090AGJA packaged gas unit. The pressure switch monitors gas supply pressure and opens or closes the electrical circuit when the set-point threshold is reached, protecting the heat exchanger and preventing unsafe operation. When this switch fails, the furnace will typically enter a no-heat lockout immediately after ignition is attempted, or will refuse to fire at all — a classic symptom technicians trace back to a faulty pressure proving circuit.

• Specs: Cut-out pressure 6.5 in w.c. | LP (propane) gas rated | Mounts horizontally or vertically | OEM part numbers: HK02LB008, HK06WC091, HK06WC100 (w/ bracket)
• OEM vs Generic: This is a genuine Carrier OEM part, factory-calibrated to the exact 6.5 in w.c. set-point. Generic pressure switches frequently drift out of tolerance, causing nuisance lockouts or — worse — allowing unsafe low-pressure operation.
• Install difficulty: 2/5 — Shut off gas supply and power before servicing. Tools needed: 1/4" nut driver, small flat-head screwdriver, and a manometer to verify downstream pressure after replacement. Photograph all wiring and tubing connections before disconnecting.
• Warranty & Shipping: 1-year OEM manufacturer warranty. Orders placed by 3 PM local time ship same business day from our warehouse.

Compatibility: Designed for the Carrier PG8MAA060090AGJA packaged gas unit. Cross-references HK06WC091 (standard) and HK06WC100 (with mounting bracket). Note: HK02LB008 has been superseded — we stock the current OEM equivalent. Verify your unit's gas type (LP vs. natural gas) and confirm the pressure rating on your data plate before ordering. Our fitment team is available to verify compatibility before you buy.