OEM Carrier Gas Valve EF33CW201 for Model LC348TM401843

This is the genuine OEM combination gas valve (part number EF33CW201) factory-specified for the Carrier LC348TM401843 furnace. The gas valve is the critical component that controls the flow of fuel from the supply line to the burner assembly. It receives a 24V signal from the control board and opens to allow gas flow during each ignition sequence. When this valve fails, the furnace will attempt ignition but produce no flame — resulting in a lockout condition and no heat. Common failure symptoms include the inducer running normally while the burner never lights, error codes indicating a gas supply fault, or a valve that sticks open or closed.

• Specs: OEM part number EF33CW201 | 24V coil voltage | Combination redundant gas valve | Factory-matched inlet/outlet configuration for Carrier LC348TM401843
• OEM vs Generic: This is a genuine Carrier OEM valve built to exact factory tolerances for pressure regulation, seat sealing, and coil response time. Aftermarket valves may differ in orifice sizing or coil sensitivity, risking improper gas pressure, nuisance lockouts, or unsafe operation — always use OEM on gas-carrying components.
• Install difficulty: 4/5 — Gas valve replacement should be performed by a licensed HVAC technician. Required tools: pipe wrench, manometer for gas pressure verification, leak-check solution, screwdrivers, and a multimeter to confirm 24V signal before replacement. Always shut off the manual gas supply and power before beginning work.
• Warranty: 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: This gas valve is the direct OEM replacement for Carrier model LC348TM401843. Verify your existing valve's part number and inlet/outlet orientation against EF33CW201 before ordering. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before you purchase — ensuring you get the right part the first time. Order today for same-day shipping.