OEM Carrier Gas Valve EF33CW189 for Model LC350TM400560

This is the factory OEM combination gas valve (part number EF33CW189) designed as a direct replacement for the Carrier LC350TM400560. The gas valve is the critical component that controls the flow of natural gas or propane into the burner assembly. When it fails, your furnace will attempt ignition — the igniter glows, the inducer runs — but no flame is established because no fuel is being delivered. Common failure symptoms include a no-heat lockout condition, error codes indicating failed ignition, or a valve that sticks open or closed causing unsafe operation.

• Specs: OEM combination gas valve | Part No. EF33CW189 | Factory-matched inlet/outlet pipe sizing | 24V coil actuation | Compatible with natural gas and LP configurations (verify your setup before ordering)
• OEM vs Generic: OEM gas valves from Carrier are manufactured to precise flow rate and pressure drop specifications. Aftermarket valves often carry wider tolerances that can cause improper combustion, nuisance lockouts, or unsafe fuel delivery — making OEM the only recommended choice for gas-side components.
• Install difficulty: 4/5 — Gas valve replacement involves working with live gas lines and should be performed by a licensed HVAC technician. Tools needed: pipe wrench, manifold gauge, leak detection solution, multimeter, and torque wrench. Always shut off the gas supply and verify zero pressure before disconnecting the valve.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship same business day when ordered before 3 PM local time.

Compatibility: This gas valve is the OEM-specified replacement for the Carrier LC350TM400560. Confirm your existing valve's part number on the unit data plate or the valve body itself before ordering. If you have any questions about fitment, our HVAC parts specialists are available to verify compatibility before your purchase — ensuring you get the right part the first time.