OEM Carrier Gas Valve EF680015 for Model YAC42110YACX202AK

This is the factory OEM replacement gas valve for the Carrier YAC42110YACX202AK furnace. The combination gas valve is the heart of your furnace's fuel delivery system — it opens on command from the control board to allow a precise, regulated flow of natural gas or LP to the burners. When the valve fails, the result is a complete no-heat condition: the inducer runs, the igniter glows, but no gas flows and the system enters lockout. A faulty valve may also cause intermittent heating, delayed ignition, or a fault code indicating an open gas valve circuit. Replacing with the correct OEM part — EF680015 — ensures factory-calibrated pressure regulation and reliable reopening every cycle.

• Specs: 24V coil voltage | 1/2" inlet × 1/2" outlet | Single-stage, slow-opening | Natural Gas (LP conversion kit compatible) | 3.0" W.C. outlet pressure | 50/60 Hz | 0.28A draw | Max inlet pressure: 1/2 PSI
• OEM vs Generic: OEM valves are manufactured to exact Carrier factory tolerances for pressure regulation and coil response time. Aftermarket valves may introduce pressure variance that causes rough ignition, sooting, or nuisance lockouts — particularly problematic in high-efficiency furnace applications.
• Install difficulty: 3/5 — Gas work requires shutting off the gas supply and verifying zero pressure before disconnection. Tools needed: adjustable wrench, pipe thread sealant (gas-rated), manometer for outlet pressure verification, and a multimeter to confirm 24V signal at the valve terminals. Always leak-test all connections with an approved solution after installation.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered as the direct OEM replacement for Carrier model YAC42110YACX202AK. Verify your unit's data plate gas type (natural gas vs. LP) and inlet pressure before ordering. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before you purchase — order with confidence and get your heat back fast.