OEM Carrier Gas Valve EF33CW201 for Model LC348LC400400

This OEM combination gas valve is the factory-specified replacement part (EF33CW201) for the Carrier LC348LC400400 system. The gas valve controls the flow of gas to the burners during each heating cycle — opening on command from the control board after the pressure switch and igniter confirm safe operating conditions. When the gas valve fails, the result is typically a complete loss of heat: the inducer runs, the igniter glows, but no flame is established, triggering a lockout condition. In some cases, a faulty valve causes intermittent heating or a furnace that shuts down mid-cycle.

• Specs: OEM part number EF33CW201 | Combination gas valve | 24V coil voltage | Factory-calibrated inlet/outlet pressure settings | Direct drop-in replacement for Carrier LC348LC400400
• OEM vs Generic: This is a genuine OEM Carrier gas valve manufactured to exact factory pressure tolerances and safety certifications. Aftermarket valves may not meet the precise pressure regulation or safety shutoff standards required for reliable, code-compliant operation — always use OEM on gas-carrying components.
• Install difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician. Required tools include a manometer, pipe wrenches, gas leak detection solution, and a multimeter. Always shut off the gas supply and disconnect power before beginning. Test for leaks thoroughly after installation.
• Warranty: 1-year OEM factory warranty. In-stock units ship the same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier LC348LC400400. Verify your existing valve's part number and inlet/outlet pressure ratings against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — don't hesitate to reach out before placing your order. Order today and your part ships same business day.