OEM Carrier 2-Stage Gas Valve EF33CW204 for Model PG9UAA060120AASA

This is the OEM factory-specified combination gas valve for the Carrier PG9UAA060120AASA gas furnace. Manufactured by White-Rodgers (model 36J55-503), this 2-stage valve precisely regulates natural gas flow at both low-fire and high-fire stages, enabling the modulated heating performance your furnace was designed to deliver. When this valve fails, symptoms typically include a complete no-heat condition, repeated ignition lockout faults, or the furnace failing to advance from low-fire to high-fire stage — all pointing to a loss of gas flow or faulty solenoid actuation inside the valve body.

• Specs: 24V AC coil | 0.430A draw | 2-stage (low/high fire) | Natural gas | White-Rodgers 36J55-503 | Replaces superseded part EF33CW191
• OEM vs Generic: This OEM valve is factory-matched to exact flow rates, inlet/outlet sizing, and solenoid tolerances for the PG9UAA060120AASA. Aftermarket valves frequently deviate in gas pressure regulation, risking incomplete combustion, nuisance lockouts, or safety shutdowns.
• Install difficulty: 3/5 — Gas work requires a licensed technician in most jurisdictions. Tools needed: adjustable wrench, pipe-thread sealant, manometer for gas pressure verification, and a multimeter to confirm 24V control signal. Always shut off gas supply and verify zero pressure before disconnecting any fittings.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG9UAA060120AASA gas furnace. Cross-references: White-Rodgers 36J55-503, superseded part EF33CW191. Verify your unit's data plate gas type (natural gas) and voltage (24V) before ordering. Our parts specialists are available to confirm fitment — contact us before you order.