Nordyne 903903 Heater Element

The Nordyne 903903 10KW Heater Element is a critical OEM replacement for staged heating in Intertherm, Miller, and Nordyne electric furnaces. Designed for 240V single-phase systems, this 10-kilowatt assembly delivers approximately 34,000 BTU, making it a standard for mobile home and light commercial air handler applications. This unit features a robust steel frame equipped with high-grade nickel-chromium resistive heating coils, ensuring high thermal conductivity and consistent heat transfer across the heat exchanger. The 903903 heater element is frequently utilized in E2EH and E2EB series furnaces, providing the necessary replacement electric heat strip capability for units requiring a 9.25-inch by 3-inch front mounting plate. As a direct-fit component, it simplifies field installation for contractors addressing furnace not heating calls. Field technicians should verify the condition of the limit switches and sequencers when replacing this element, as these often fail in conjunction with the primary coil due to restricted airflow or age-related fatigue.

• OEM Compatibility: Replaces part numbers 270001 and 903903, ensuring precise fitment in Nordyne, Intertherm, and Miller furnace cabinets.
• Optimal Heat Output: Rated at 10KW at 240V, providing reliable auxiliary heat for residential and mobile home HVAC systems.
• Durable Construction: Built with metal alloy frames and heavy-duty coils to withstand the mechanical stress of thermal cycling.
• Technical Precision: Meets original manufacturer specifications for resistance values (typically 9-11 ohms) and dimensions for seamless integration.

How do I confirm my Nordyne heater element is faulty?
Using a multimeter, technicians should check for continuity across the element terminals. A functional 10KW 240V heater element typically shows a reading between 9 and 50 ohms. An "OL" or infinite reading indicates a break in the coil requiring replacement.

Is the limit switch included with this assembly?
The 903903 assembly focus is the resistive element and frame. While the mounting plate has provisions for limit switches, standard HVAC practice is to inspect the existing limit switch (often part number 626513R) and reuse or replace it separately depending on its condition.

What furnace models are compatible with the 903903?
This element is primarily designed for the E2EH and E2EB series. It is common in staged heating configurations (e.g., E2EH-020HB), where two 10KW elements are used to provide progressive heating stages.

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.