OEM Carrier Gas Valve 24V 1/2" Natural/LP — EF680015 for Model YAC48110YAC104AC

This OEM combination gas valve is the factory-specified replacement for the Carrier YAC48110YAC104AC packaged unit. The gas valve is the central gatekeeper of your heating system — it receives a 24V signal from the control board and opens to allow measured, regulated gas flow to the burners for ignition. When it fails, symptoms include a complete no-heat condition, the furnace attempting ignition with no flame establishing, repeated lockout codes, or an audible click with no gas flow. A faulty valve can also stick partially open or closed, causing unsafe operation — always replace with the correct OEM part.

• Specs: 24VAC, 60Hz | 1/2" inlet × 1/2" outlet | Single-stage, slow-opening | Pressure set: 3.5" W.C. (natural) | 0.28A coil draw | Compatible with Natural Gas and LP (conversion kit included)
• OEM vs Generic: OEM valves are manufactured to Carrier's exact factory pressure tolerances and safety certifications. Aftermarket valves may drift in W.C. pressure regulation, increasing the risk of incomplete combustion, nuisance lockouts, or unsafe gas pressure — not a component to compromise on.
• Install difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician. Requires shutting off gas supply, relieving line pressure, disconnecting wiring harness, and re-testing for leaks with a manometer and leak detector. Tools: adjustable wrenches, manometer, combustible gas leak detector, multimeter.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Engineered as the OEM direct replacement for Carrier model YAC48110YAC104AC packaged gas/electric units. Verify inlet/outlet diameter and operating voltage on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.