OEM Carrier Gas Valve EF33CW189 for LC350TM400558
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OEM Carrier Combination Gas Valve EF33CW189 for Model LC350TM400558
This OEM combination gas valve (part number EF33CW189) is the factory-specified replacement for the Carrier LC350TM400558 furnace. The gas valve is the heart of your furnace's fuel delivery system — it regulates and controls the flow of gas to the burners in response to signals from the control board. When it fails, the result is no heat: the inducer and igniter may cycle normally, but without gas flow, the burners never light and the system locks out. A faulty gas valve can also cause intermittent heating, delayed ignition, or a furnace that lights briefly then shuts off.
- Specs: OEM combination gas valve | Part No. EF33CW189 | Factory-matched pressure settings | 24V coil operation | Compatible with natural gas configurations — verify fuel type on unit data plate before ordering
- OEM vs Generic: This is a genuine OEM Carrier part built to exact factory pressure tolerances and flow rates. Aftermarket gas valves frequently ship with mismatched pressure ratings, risking improper combustion, nuisance lockouts, or unsafe operation. OEM is always the recommended choice for gas-side components.
- Install difficulty: 4/5 — Gas valve replacement involves working with live gas lines and should be performed by a licensed HVAC technician or qualified professional. Required tools include a manifold pressure gauge, pipe wrenches, gas leak detector solution, and a multimeter. Always shut off gas supply and power before beginning. Verify inlet/outlet pressure after installation.
- Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.
Compatibility: Designed for the Carrier LC350TM400558 furnace. Always cross-reference the OEM part number EF33CW189 and your unit's data plate specifications — including fuel type and gas pressure ratings — before ordering. Our fitment team is available to verify compatibility prior to purchase. Order today and get your heat restored fast with same-day shipping.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $99
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days