Carrier EF660017 Gas Valve

The Carrier EF660017 Gas Valve is a high-performance, 2-stage natural gas valve engineered for precision fuel regulation in residential and light commercial furnaces. This factory authorized OEM part is the primary direct replacement for EF33CW198, and it is also compatible with older part numbers including EF33CW184, EF33CW185, EF33CW195, EF33CW196, and EF33CW199. Designed for 24V control circuits, this valve features a 3/4-inch NPT inlet/outlet and is pre-configured for a 3.5" W.C. natural gas manifold pressure on high stage, with a low-stage setting of 1.5" W.C.

Manufactured by White-Rodgers (Model 36J55-503), the EF660017 utilizes a slow-opening design to ensure smooth ignition transitions in Direct Spark Ignition (DSI) and Hot Surface Ignition (HSI) systems. This HVAC replacement gas valve is rated for up to 140,000 BTU/HR at a 1" pressure drop, providing the reliability required for high-efficiency Carrier, Bryant, and Payne equipment. The kit includes a 1/8" NPT pressure tap for accurate field clocking and troubleshooting. For technicians performing furnace gas valve replacement, this component ensures the appliance maintains its original AGA and CSA safety listings while restoring optimal combustion efficiency.

• Direct OEM Compatibility: Serves as a drop-in replacement for the EF33CW198 and several legacy Carrier gas valve models, eliminating the need for manifold modifications.
• Two-Stage Operation: Supports 2-stage heating systems, allowing for quieter operation and improved temperature staging.
• Technical Precision: Features 3.5" WC natural gas regulation with an adjustable range of 2.0" to 5.0" on high stage for precise field calibration.
• Slow-Opening Design: Specifically engineered to prevent delayed ignition and "booming" during the start-up cycle.
• Robust Construction: Rated for ambient temperatures from -40°F to 175°F, ensuring performance in demanding mechanical room environments.

• Is the EF660017 compatible with LP (Propane) systems? This valve is factory-set for natural gas but is typically compatible with LP conversion kits (such as the EF39ZW023) if specified by the manufacturer's installation instructions.
• What does a 3/4" connection size mean for my installation? The 3/4-inch NPT threads provide high-volume flow for larger BTU furnaces, though many kits include bushings if adapting to 1/2" piping is required.
• How do I know if my gas valve is failing? Common indicators include a "no heat" call, furnace short cycling, or ignition lockout codes related to low gas pressure or failed internal solenoids.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.