Copeland Comfort Control (White Rodgers) 37C73U-168 Control

The Copeland Comfort Control (White Rodgers) 37C73U-168 Valve is a professional-grade Natural Gas Water Heater Control engineered specifically for high-efficiency A.O. Smith residential systems. As a veteran-preferred universal water heater gas valve replacement, it features a 1-1/4 inch shank and utilizes 3.5" W.C. main burner and 4.0" W.C. pilot gas pressure regulation. This robust NG water heater thermostat provides precise temperature modulation across a 70°F to 160°F range, incorporating a 1/2" NPT inlet and 1/2" inverted flare outlet for secure, leak-proof threading. Service technicians value the integrated Energy Cut Off (E.C.O.) system, which provides a non-cycling high-limit safety set at 195°F to prevent overheating. Whether you are performing a standard maintenance override or a critical component swap, this White-Rodgers 37C73U-168 ensures reliable flame rectification and pilot safety for systems rated up to 75,000 BTU/HR. Its right-hand thread design and manifold pressure tap facilitate accurate combustion analysis and streamlined field installation.

Key Benefits

• Precise Thermal Control: Maintains consistent water temperatures between 70°F and 160°F for optimal residential comfort.
• Advanced Safety Integration: Built-in E.C.O. (Energy Cut Off) and automatic pilot shut-off protect against thermal runaway and gas leaks.
• Universal Compatibility: Optimized for A.O. Smith, State, and American Water Heater models using natural gas.
• Rugged Construction: Durable silver-finish housing designed to withstand demanding mechanical room environments.
• Installation Efficiency: Includes a manifold pressure tap for fast verification of burner pressure during commissioning.

Common Questions

Is the 37C73U-168 compatible with LP (Propane) systems?
No, this specific model is calibrated strictly for Natural Gas applications with right-hand threads. For LP conversions, a dedicated liquid propane valve with left-hand threads is required.

Does this valve include the necessary outlet adapters?
Yes, the 37C73U-168 typically ships with a 1/2" inverted flare x 3/8" NPT reducer adapter to ensure compatibility with various manifold configurations.

What is the maximum BTU rating for this control?This valve is designed to handle residential water heaters with a capacity of up to 75,000 BTU/HR.

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.

37C73U-168 is the cross 110-202