OEM Carrier 2-Stage Natural Gas Valve EF33CW204 for Model PG9MXA036080AASA

This is the OEM factory-specified combination gas valve for the Carrier PG9MXA036080AASA 80% AFUE gas furnace. Manufactured by White Rodgers (model 36J55-503), this 2-stage valve precisely regulates natural gas flow during both low-fire and high-fire heating stages. When this valve fails, you'll typically experience a complete loss of heat, repeated ignition lockout faults, or the burners lighting briefly then shutting down — all signs that gas pressure is not being delivered correctly to the burner assembly.

• Specs: 24V coil voltage | 0.430A draw | 2-stage (lo/hi fire) operation | Natural gas | White Rodgers 36J55-503 cross-reference | Replaces prior OEM P/N EF33CW191
• OEM vs Generic: This is a genuine Carrier OEM part, engineered to exact factory tolerances. Aftermarket valves may not deliver precise stage-to-stage pressure differentials, risking combustion inefficiency, nuisance lockouts, or premature heat exchanger fatigue.
• Install difficulty: 3/5 — Shut off gas supply and 120V power before beginning. Tools needed: adjustable wrench, pipe thread sealant, manometer (to verify outlet pressure), and a multimeter to confirm 24V signal at valve terminals. Always perform a leak test after reinstallation.
• Warranty: 1-year OEM factory warranty against defects. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG9MXA036080AASA 80% AFUE gas furnace. Verify your unit's data plate lists part number EF33CW204 or EF33CW191 before ordering. Not sure if this fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.