OEM Carrier LP Gas Pressure Switch (HK02LB008) for Model TCACCYCRLPKIT9001A00

This OEM LP gas pressure switch is the factory-specified replacement part for the Carrier TCACCYCRLPKIT9001A00 propane (LP) gas system. The pressure switch monitors gas supply pressure and signals the control board to allow or interrupt the ignition sequence based on detected pressure levels. When this switch fails or drifts out of calibration, the unit will typically lock out before ignition, refuse to fire on a call for heat, or cycle off unexpectedly — leaving you with no heat on the coldest days.

• Specs: LP (propane) gas pressure switch | 6.5" W.C. cut-out pressure setting | OEM part number HK02LB008 | Cross-reference: GFS3451-4036 | Factory-calibrated — no field adjustment required
• OEM vs Generic: This is a genuine Carrier factory-authorized part, manufactured to exact pressure tolerances. Aftermarket substitutes may carry ±10–15% pressure variance, risking nuisance lockouts or unsafe gas flow conditions — especially critical on LP systems where pressure regulation is tighter than natural gas.
• Install difficulty: 3/5 — Turn off gas supply and power before servicing. Tools needed: 1/4" nut driver, flat-head screwdriver, manometer (recommended for LP verification), and needle-nose pliers for hose barb connections. Always verify inlet gas pressure at the manifold after installation.
• Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse. Note: HK02LB008 is the current OEM part; direct replacement cross-reference is HK02MB008 where noted.

Compatibility: Designed for the Carrier TCACCYCRLPKIT9001A00 LP (propane) gas system kit. Verify your unit's gas type (LP vs. natural gas) and the original pressure switch W.C. rating on your data plate before ordering — LP and natural gas pressure switches are not interchangeable. Our fitment team is available to confirm compatibility before you purchase.