OEM Carrier LP Gas Pressure Switch (HK02LB008) for Model PG8JAA036110AFJA

This is the factory OEM LP gas pressure switch for the Carrier PG8JAA036110AFJA packaged gas unit. The pressure switch monitors gas supply pressure and opens or closes the control circuit when pressure rises above or drops below the factory-set cutout point of 6.5" W.C. (inches water column). When this switch fails, the furnace or packaged unit will typically go into a no-heat lockout condition — the inducer may run but ignition will never be attempted, or the unit shuts down mid-cycle with a pressure fault code.

• Specs: Cut-out pressure: 6.5" W.C. | Gas type: LP (propane) | Mounting: horizontal or vertical | Fits air, natural gas, and LP gas applications | Replaces OEM part numbers HK02LB008, HK06WC091, and HK06WC100 (bracket version)
• OEM vs Generic: This is a genuine Carrier OEM switch calibrated to exact factory pressure tolerances. Generic aftermarket switches often carry ±15% pressure tolerances that can cause nuisance lockouts, missed ignition windows, or — worse — unsafe operation under low-gas-pressure conditions.
• Install difficulty: 2/5 — Shut off gas and power before servicing. Locate the pressure switch on the gas valve or manifold assembly. Disconnect the two wiring leads (photograph before removing), unscrew the mounting fastener, and swap in the new switch. Tools needed: flat-head and Phillips screwdrivers, 1/4" nut driver, and a manometer to verify gas pressure after installation.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse. Note: HK02LB008 may ship as updated replacement HK02MB008 per manufacturer supersession.

Compatibility: Designed for the Carrier PG8JAA036110AFJA packaged gas unit. This switch also cross-references to Carrier/Bryant/Payne models using OEM part numbers HK02LB008, HK06WC091, and HK06WC100 (bracket-mount version). Verify your gas type (LP vs. natural gas) and the pressure rating on your existing switch before ordering — LP and NG switches are not interchangeable. Order with confidence — our team verifies fitment before your part ships.