OEM Carrier Combination Gas Valve EF33CW201 for Model LC348TM402771

This is the OEM factory-specified combination gas valve (part number EF33CW201) for the Carrier LC348TM402771 packaged or split-system gas furnace. The combination gas valve controls the flow of gas to the burners by responding to 24V signals from the integrated furnace control board. When this valve fails, the system will attempt ignition — the igniter will glow and the inducer will run — but no flame will establish, resulting in a lockout condition and no heat. Common failure symptoms include a flashing fault code indicating failed ignition, the smell of gas without a flame lighting, or a complete loss of heating with the inducer motor still operating normally.

• Specs: Combination gas valve | 24V coil voltage | Factory-matched inlet/outlet pipe sizing | Includes redundant safety shutoff per ANSI standards
• OEM vs Generic: This is a genuine OEM Carrier part (EF33CW201), ensuring exact pressure regulation, gas flow rates, and coil voltage tolerances as specified for the LC348TM402771. Aftermarket valves frequently exhibit inconsistent gas pressure regulation, which can cause nuisance lockouts, delayed ignition, or unsafe operation.
• Install difficulty: 3/5 — Gas valve replacement requires shutting off the gas supply, depressurizing the line, and carefully reconnecting gas fittings. Tools needed: adjustable wrench, pipe thread sealant, multimeter, and a gas leak detection solution. We strongly recommend a licensed HVAC technician perform this repair to ensure safe operation and code compliance.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as the direct OEM replacement gas valve for Carrier model LC348TM402771. Always verify your existing valve's part number, inlet/outlet sizing, and coil voltage against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — no guesswork required. In stock and ships today.