The Reznor 194808 Transformer is a high-grade 120V to 24V step-down transformer specifically engineered for long-term reliability in commercial and industrial HVAC unit heaters. As a critical OEM replacement part, it ensures the control circuit receives a stable 24V AC output, which is essential for powering gas valves, ignition modules, and thermostats. Rated at 40VA, this Class 2 transformer provides sufficient volt-ampere capacity to manage standard low-voltage loads without the risk of saturation or secondary voltage drop. Its robust construction is designed to withstand the high-temperature environments typical of Reznor heating equipment, such as the UDX or UDAP series. For technicians, installing a genuine Reznor 194808 ensures exact physical mounting alignment and primary lead compatibility, reducing field labor and preventing common "no heat" calls caused by faulty low-voltage power supplies. Key Benefits Precise Voltage Conversion: Efficiently steps down 120VAC line voltage to standard 24VAC for secondary control circuits. 40VA Capacity: Delivers ample power for modern electronic ignition systems and multi-stage gas valves. OEM Compatibility: Guaranteed fit for an extensive range of Reznor unit heaters and air handlers. Durable Core Design: Heavy-duty laminations and windings minimize humming and heat generation during high-demand cycles. Common Questions Is the Reznor 194808 compatible with older Reznor units? Yes, this 40VA transformer is the standard replacement for most older Reznor gas-fired units requiring a 120V primary. Always verify the VA requirements of your specific control circuit before installation. What causes a transformer like the 194808 to burn out? Most failures are caused by a downstream short in the 24V circuit, often at the thermostat or gas valve. We recommend checking for low-voltage shorts before replacing the transformer to prevent repeat failure. Can I use a 20VA transformer instead of this 40VA model? No. Using a lower VA rating can lead to overheating and failed ignition sequences. The 40VA rating of the 194808 ensures the system has the necessary overhead for localized control components. This item is not eligible for free shipping. 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.
