Reznor 221525 Gas Valve

The Reznor 221525 Gas Valve is a critical OEM replacement component engineered for high-capacity industrial and commercial unit heaters. This White Rodgers 36H32-441 equivalent operates on a 24V AC circuit and is factory-set for Natural Gas with a standard 3.5" WC (Water Column) outlet pressure. Designed for single-stage heating systems, this combination gas valve features redundant solenoid valves to ensure safe fuel regulation and consistent burner performance. With 3/4" NPT inlet and outlet connections, it provides the high flow rates required for large-scale Reznor CAUA and series heaters.

For field technicians, the 36H32-441 gas valve integrates seamlessly with Hot Surface Ignition (HSI) and Direct Spark Ignition (DSI) systems. The robust construction handles an ambient temperature range from -40°F to 175°F, making it reliable for rooftop or warehouse environments. This electronic ignition gas valve includes an on/off toggle switch for manual shutoff during servicing and provides a specialized pressure tap for precise manifold pressure adjustments. Replacing a worn 221525 with this genuine Reznor heating part ensures the system maintains its original combustion efficiency and factory-spec safety parameters without the risks associated with universal aftermarket alternatives.

• Universal Compatibility: Directly replaces Reznor 221525 and is identical to White Rodgers 36H32-441 for fast installation.
• High Capacity Performance: Large 3/4 inch porting supports high-BTU unit heaters for industrial applications.
• System Versatility: Engineered to work with both HSI and DSI intermittent pilot and electronic ignition systems.
• Safety Redundancy: Features dual solenoid seats to provide reliable gas shutoff and prevent leaks.
• Field Adjustable: Includes a factory-set 3.5" WC Natural Gas regulator that can be fine-tuned to meet specific appliance rating plate requirements.

Can I convert this Reznor 221525 valve to LP gas?
While factory-set for natural gas, 36H series valves are often convertible using a specific manufacturer LP conversion kit. Check your heater's rating plate for manifold pressure requirements before attempting conversion.

Will this valve replace a 1/2" NPT connection?
This specific model features 3/4" x 3/4" connections. If your existing manifold is 1/2", you will need appropriate reducers or to verify if the 1/2" variant of the 36H series is required for your specific BTU load.

Does this gas valve support two-stage heating?
No, the 36H32-441 is a single-stage, fast-opening valve. For two-stage Reznor units, a different model in the 36H series with high/low solenoids must be used.

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.