OEM Carrier Gas Valve 24V 1/2" Natural/LP Kit for Model YAC1840YAC101K

This OEM combination gas valve is the factory-specified replacement for the Carrier YAC1840YAC101K furnace. The gas valve is the critical safety and control component that regulates gas pressure and flow from the supply line to the burners. When it fails, the furnace will either produce no heat at all, fail to ignite after the inducer and igniter sequence, or shut down on a safety lockout. Common failure symptoms include a furnace that runs through the ignition cycle but never lights, an error code indicating a gas valve fault, or a valve that sticks open or closed.

• Specs: 24V coil voltage | 1/2" inlet x 1/2" outlet | Single-stage, slow-opening | 3.0" W.C. factory pressure setting | Natural Gas with LP conversion kit included | 50/60 Hz | 0.28A draw | Max inlet pressure: 1/2 PSI
• OEM vs Generic: This is a genuine OEM part engineered to exact factory tolerances for the YAC1840YAC101K. Generic valves may not match coil voltage draw, pressure regulation range, or safety shutoff timing — all of which affect both performance and compliance with local gas codes.
• Install difficulty: 3/5 — Gas valve replacement requires shutting off the gas supply at the shutoff valve and verifying zero pressure before disconnecting fittings. Tools needed: adjustable wrench, pipe thread sealant (gas-rated), flathead screwdriver, manometer (to verify outlet pressure post-install). Always verify for gas leaks with soapy water or a leak detector after installation. Professional installation recommended if unfamiliar with gas lines.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed for the Carrier YAC1840YAC101K furnace. OEM part number EF680015. Also cross-references Carrier/Bryant gas valve family including prior EF32CW-series valves. Verify your unit's data plate for gas type (natural or LP) and inlet pressure spec before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get same-day shipping on in-stock parts.