OEM Carrier Gas Valve EF33CW189 for Model LC348TM402286

This is the OEM factory-specified combination gas valve (part number EF33CW189) for the Carrier LC348TM402286 furnace. The gas valve is a critical safety and control component that regulates the flow of gas from the supply line to the burner assembly. When the control board signals a call for heat and all safety conditions are met — including proof of inducer and flame sensor readiness — the gas valve opens to allow ignition. A failed gas valve typically results in a no-heat condition, repeated ignition lockouts, or error codes indicating gas flow failure. You may hear the igniter glow but see no flame establish.

• Specs: OEM part number EF33CW189 | Combination gas valve | 24V coil voltage | Factory-matched inlet/outlet configuration and pressure ratings for Carrier LC348TM402286
• OEM vs Generic: This is a genuine OEM Carrier gas valve manufactured to exact factory tolerances. Generic valves may carry inconsistent pressure ratings or coil response times, which can lead to unsafe ignition conditions or premature control board faults. OEM is strongly recommended for gas-carrying components.
• Install difficulty: 4/5 — Gas valve replacement involves working on a live gas line and should be performed by a licensed HVAC technician. Tools needed: adjustable wrenches, pipe thread sealant (gas-rated), manometer for outlet pressure verification, and a combustible gas leak detector. Always shut off the gas supply and confirm zero pressure before disconnecting the valve.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model LC348TM402286. Verify your existing valve's part number, inlet size, and operating pressure specifications against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — order with confidence and get your system back to safe operation fast.