OEM Carrier Gas Valve EF33CW201 for Model LC348LC400401

This is the factory OEM combination gas valve for the Carrier LC348LC400401 furnace. The gas valve is the critical control component that regulates natural gas or propane flow to the burner assembly. When the control board sends a 24V signal during a heating cycle, the valve opens to allow gas flow for ignition. A failed gas valve typically results in a no-heat condition — the inducer and igniter may operate normally, but the burner never lights, triggering a lockout fault code. In some cases, the valve may open intermittently, causing unreliable or delayed heating performance.

• Specs: OEM Part Number EF33CW201 | Combination gas valve | 24V coil voltage | Compatible with natural gas and LP (verify configuration) | Factory-matched pressure and flow settings
• OEM vs Generic: This is the exact factory-specified valve engineered for the LC348LC400401. OEM gas valves are pre-set to the correct inlet/outlet pressure specifications. Aftermarket valves often require field adjustment and may void equipment warranties or fail safety certifications.
• Install difficulty: 4/5 — Gas valve replacement involves working with live gas lines and should be performed by a licensed HVAC technician. Tools needed: adjustable wrenches, pipe thread sealant, manometer for pressure verification, and a combustion analyzer. Always shut off gas supply and verify with a leak detector after installation.
• Warranty: 1-year OEM factory warranty. Leaves our warehouse same business day on in-stock orders.

Compatibility: Designed specifically for the Carrier LC348LC400401 furnace. Always cross-reference the OEM part number EF33CW201 against the data plate inside your unit's blower compartment before ordering. Our fitment specialists are available to confirm compatibility prior to purchase. Order today for same-day shipping and get your system heating again fast.