OEM Carrier Gas Valve 36C21-411 / EF26CK201 for Model YAC36100YAC304

This is the factory OEM combination gas valve for the Carrier YAC36100YAC304 packaged unit. The gas valve is a critical safety and control component — it regulates the flow of natural gas or propane into the burner assembly in direct response to commands from the integrated furnace control board. When this valve fails, the result is a complete loss of heat: the igniter may glow, the inducer may run, but no flame is established because gas never reaches the burners. Common failure symptoms include a no-heat lockout, error codes indicating failed ignition, or a gas valve that opens but delivers insufficient flow.

• OEM Part Numbers: 36C21-411 (White-Rodgers / Emerson) | Cross-reference: EF26CK201 — both are factory-authorized replacements for Carrier model YAC36100YAC304. Always verify against your unit's data plate and wiring diagram before installation.
• OEM vs Generic: OEM gas valves are calibrated to exact inlet/outlet pressure specifications and flow rates required by the Carrier YAC36100YAC304. Generic or aftermarket valves may not meet AGA/CSA certification requirements for this application, risking safety shutdowns or voided warranties.
• Install Difficulty: 4/5 — Gas valve replacement must be performed by a licensed HVAC technician or gas fitter. Required tools: manifold gauge set, manometer (for gas pressure verification), pipe wrench, thread sealant rated for gas, and a calibrated gas leak detector. Always shut off the manual gas supply, de-energize the unit, and verify zero pressure before disconnecting fittings.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: This gas valve is the direct OEM replacement for Carrier model YAC36100YAC304. Cross-reference part numbers 36C21-411 and EF26CK201 against your existing valve's label to confirm voltage, inlet size, and stage configuration match before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before your order ships — no guesswork.