OEM Carrier Combination Gas Valve EF33CW201 for Model LC348TM401746

This is the factory OEM replacement gas valve (part number EF33CW201) for the Carrier LC348TM401746 furnace. The combination gas valve is the critical safety and flow-control component that regulates gas pressure and delivery to the burner assembly. When the valve fails, the furnace will attempt ignition but no gas will flow — resulting in a no-heat lockout condition. You may also see the system enter a fault code after multiple failed ignition attempts as the control board detects an absent flame signal.

• Specs: OEM combination gas valve | Factory-matched inlet/outlet ports | 24V coil voltage | Designed for natural gas or LP (verify configuration on your unit's data plate before ordering)
• OEM vs Generic: This factory OEM valve is precision-calibrated to the exact manifold pressure specifications required by the Carrier LC348TM401746. Aftermarket valves may deliver inconsistent gas pressure, causing nuisance lockouts, delayed ignition, or unsafe operating conditions. OEM is always recommended for gas-carrying components.
• Install difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician. Required tools include pipe wrenches, manometer for manifold pressure verification, gas leak detector solution, and a multimeter. Always shut off the gas supply and disconnect power before beginning. Verify proper manifold pressure after installation.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier LC348TM401746 furnace. Confirm your existing valve's part number and gas type (natural gas vs. LP) on the unit data plate before ordering. Our fitment team is available to verify compatibility prior to purchase — don't guess on a gas component. Order today for same-day shipping and get your heat restored fast.