OEM Carrier Gas Valve EF33CW189 for Model LC348TM402018

This is the OEM factory-specified combination gas valve (part number EF33CW189) for the Carrier LC348TM402018 packaged or furnace unit. The gas valve is the critical component that controls fuel delivery to the burner assembly. It receives a 24V signal from the control board and opens to allow gas flow during the heating cycle. When this valve fails, the result is typically a complete no-heat condition — the inducer may run, the igniter may glow, but without gas flow the burner will not light and the unit will lock out after repeated failed ignition attempts. A faulty valve can also cause symptoms such as delayed ignition, weak flame, or intermittent heating faults logged on the control board.

• Specs: OEM combination gas valve | 24V coil voltage | Factory-matched inlet/outlet pipe sizing | Designed for natural gas or LP (verify rating on unit data plate) | Direct drop-in replacement for Carrier part EF33CW189
• OEM vs Generic: This is a genuine OEM Carrier gas valve, ensuring exact pressure regulation, coil sensitivity, and safety shutoff performance. Generic valves may deviate in opening pressure or response time, creating unsafe combustion conditions or nuisance lockouts.
• Install difficulty: 4/5 — Gas valve replacement involves working with live gas lines. Shut off gas supply and power before beginning. Tools needed: pipe wrenches, gas-rated thread sealant, manometer for outlet pressure verification, multimeter. A licensed HVAC technician is strongly recommended for this repair.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model LC348TM402018. Always cross-reference the OEM part number EF33CW189 and your unit's gas type (natural gas or LP) on the data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — don't hesitate to reach out before you order.