OEM Carrier Gas Valve 24V 1/2" Natural/LP for Model YAC48110YAC203AT

This OEM combination gas valve (part # EF680015) is the factory-specified replacement for the Carrier YAC48110YAC203AT packaged gas/electric unit. The gas valve controls the flow of natural gas (or LP with included conversion kit) to the burner assembly, opening only when the ignition sequence has been successfully verified by the control board. When this valve fails, the unit will attempt ignition but deliver no heat — symptoms include a no-heat lockout, repeated ignition attempts with no flame, or a complete absence of gas flow at the burner. Do not attempt to repair a faulty gas valve; replacement is the only safe remedy.

• Specs: 24VAC coil voltage | 1/2" inlet × 1/2" outlet | Single-stage slow-opening | Compatible with Natural Gas (factory) and LP Gas (conversion kit included) | Max inlet pressure: 1/2 PSI | Pressure regulator factory-set to 3.5" W.C.
• OEM vs Generic: This is a genuine OEM Carrier part manufactured to exact factory tolerances. Generic aftermarket valves may not meet the precise pressure regulation and safety shut-off specifications required for your system — always use OEM on gas-carrying components.
• Install difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician or qualified professional. Required tools: adjustable wrench, pipe thread sealant (gas-rated), manometer for outlet pressure verification, leak-detection solution. Always shut off gas supply and power before beginning work. Test for leaks after installation before restoring power.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model YAC48110YAC203AT packaged gas/electric units. Verify your unit's gas type, inlet pressure, and valve configuration on the data plate before ordering. Our team is available to confirm fitment — contact us before you order if you have any questions.