Reznor 155981 Ventor Assembly

The Reznor 155981 Ventor Assembly is a critical combustion air blower designed for high-efficiency thermal management in SFT series units. Specifically engineered for Reznor SFT150, SFT200, SFT250, and SFT300 models, this direct replacement inducer motor ensures optimal flue gas extraction and consistent airflow through the heat exchanger. This specific induced draft blower configuration is supplied less shroud, making it a streamlined solution for technicians performing targeted repairs on existing discharge setups. Built to withstand the high temperatures associated with gas-fired heating cycles, the 155981 venter motor maintains the necessary static pressure to engage the pressure switch and initiate the ignition sequence. When troubleshooting furnace draft issues or vibration noise in Reznor SFT unit heaters, verified compatibility with the manifold pressure settings is essential. This high-performance HVAC exhaust fan assembly facilitates reliable venting and combustion stability for commercial and industrial heating applications.

Key Benefits:

• Direct OEM replacement part for precise mechanical alignment and electrical termination within SFT150-300 chassis.
• Optimizes combustion efficiency by maintaining the required CFM for proper gas-to-air ratios.
• Engineered for high-duty cycles to prevent premature bearing failure and inducer motor stalling.
• Eliminates the cost of unnecessary shroud components when the existing housing remains structurally sound.
• Restores system safety by ensuring positive flue gas ventilation and preventing CO buildup.

Common Questions:

What are the signs that a Reznor 155981 needs replacement?
Technicians should look for high-pitched bearing squealing, failure to close the pressure switch under load, or visible corrosion on the blower wheel. If the inducer fails to reach target RPM, the ignition sequence will be locked out for safety.

Does this assembly include the mounting gasket?
Internal configurations vary; it is standard practice to inspect the existing mounting surface and replace any degraded high-temp gaskets to ensure a gas-tight seal upon installation of the 155981 venter.

Is this part compatible with UDAP or V3 series heaters?
No, this specific assembly is dedicated to the Reznor SFT series. Always verify the model number and BTU rating of the unit to ensure the static pressure curve matches the heater's requirements.

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.