OEM Carrier LP Gas Pressure Switch 6.5" W.C. for Model PG8MAA066135AGJA

This is the genuine OEM replacement LP gas pressure switch for the Carrier PG8MAA066135AGJA packaged gas unit. The pressure switch monitors gas supply pressure in the heat exchanger circuit and opens or closes its electrical contacts the moment pressure crosses the factory-set threshold. When this switch fails or drifts out of calibration, the furnace control board cannot confirm safe operating conditions — resulting in a hard lockout before ignition ever occurs. Symptoms include a furnace that attempts to start, clicks through its ignition sequence, then shuts down with a pressure-switch fault code.

• Specs: Cutout pressure set at 6.5" W.C. (inches water column) | Compatible with LP/propane gas applications | SPST switching action | Mounts horizontally or vertically | OEM Part Numbers: HK02LB008 (primary), HK06WC091, HK06WC100 (w/ bracket)
• OEM vs Generic: This is a factory-matched OEM switch with the exact 6.5" W.C. setpoint for the PG8MAA066135AGJA. Aftermarket switches often deviate from rated setpoints, causing nuisance lockouts or — worse — failing to lock out under unsafe pressure conditions. Don't compromise on a safety-critical component.
• Install difficulty: 2/5 — Shut off gas supply and 24V control power before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of replacement tubing if the existing hose barb is cracked. Photograph all wiring and tubing routing before disconnecting. Swap the pressure tube last, after confirming electrical connections.
• Warranty & Shipping: 1-year OEM manufacturer warranty against defects. In stock and ships same business day from our warehouse. Note: HK02LB008 has been superseded — orders may ship as direct OEM replacement HK02MB008, which is fully interchangeable.

Compatibility: Engineered for the Carrier PG8MAA066135AGJA packaged gas/electric unit. Cross-references OEM part numbers HK02LB008, HK06WC091, and HK06WC100 (bracket-mount variant). Compatible across Carrier, Bryant, and Payne packaged unit platforms sharing the 6.5" W.C. LP gas pressure specification. Verify your unit's gas type (LP vs. natural gas) and existing switch W.C. rating on the data plate before ordering — questions? Our fitment team confirms compatibility before you buy. Order now and get same-day shipping.