OEM Carrier Combination Gas Valve 36C21-411 / EF26CK201 for Model YAC36100YAC305

This is the factory OEM replacement combination gas valve for the Carrier YAC36100YAC305 packaged unit. The gas valve is the critical component that regulates the flow of gas to the burner assembly. It receives a 24V signal from the control board and opens the main gas port to allow ignition. When this valve fails, the system will typically enter a hard lockout after repeated ignition attempts, display a fault code, or produce no heat whatsoever despite the igniter and flame sensor functioning correctly. This part cross-references OEM part numbers 36C21-411 and EF26CK201 — both are factory-authorized replacements for this model.

• Specs: Combination gas valve | 24V coil control signal | Replaces OEM part numbers 36C21-411 and EF26CK201 | Factory-matched inlet/outlet dimensions and pressure ratings for Carrier YAC36100YAC305
• OEM vs Generic: OEM gas valves are calibrated to exact factory pressure specifications. Generic valves can deviate in opening pressure and flow rate, risking unsafe combustion, nuisance lockouts, or voided equipment warranties.
• Install difficulty: 3/5 — Gas work requires shutting off the manual gas supply before beginning. Tools needed: adjustable wrench, 1/4" nut driver, manometer for pressure verification, pipe-thread sealant (gas-rated). Always leak-test all connections with a listed gas leak detector solution after installation. Professional installation is strongly recommended.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before 3 PM EST ship the same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier YAC36100YAC305 packaged unit. Cross-references OEM part numbers 36C21-411 and EF26CK201. Always verify your unit's gas type (natural gas or LP), inlet pressure, and manifold pressure against your equipment data plate before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you buy.