OEM Carrier Combination Gas Valve EF680015 for Model YAC1840YACX101K

This is the genuine OEM replacement combination gas valve for the Carrier YAC1840YACX101K packaged unit. The gas valve is the heart of the heating system's fuel delivery — it controls the flow of natural gas or propane from the supply line to the burner assembly on command from the control board. When it fails, the result is typically a complete no-heat condition: the igniter may glow or spark, but without gas flow the burner never lights, triggering a safety lockout. A faulty valve can also cause intermittent heating, failure to re-ignite after a normal cycle, or a fault code indicating no gas pressure detected.

• Specs: OEM Part Number EF680015 | Combination gas valve (redundant dual-seat safety design) | Factory-specified inlet/outlet pressure ratings | Compatible with natural gas and LP (verify configuration on unit data plate)
• OEM vs Generic: This is a genuine Carrier OEM valve — factory-calibrated pressure regulation and redundant solenoid seats ensure safe, precise gas delivery. Aftermarket valves often lack exact pressure tolerances, risking nuisance lockouts, improper flame, or unsafe operation. Always use OEM on gas-carrying components.
• Install Difficulty: 4/5 — Gas valve replacement involves working on a live gas system and must be performed by a licensed HVAC/R technician. Tools required: manifold gauge set, leak-detection solution, adjustable wrench, gas-rated thread sealant, and a multimeter to verify solenoid coil continuity before installation.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier YAC1840YACX101K packaged unit. Always cross-reference the OEM part number EF680015 with the unit's data plate and existing valve model tag before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you buy — reach out before placing your order.