This model is identical to the ST500-1/2

often utilized as a freezestat in chiller applications or evaporator sections to interrupt the control circuit when temperatures approach the freezing point of water

For 240V requirements

Heavy-Duty Construction: Built to withstand the vibration and temperature fluctuations common in commercial mechanical rooms

Direct OEM replacement for S1-025-38948-000

Lennox 28M89 Motor 30067439-890 This model is identical toThe Lennox 28M89 Blower Motor is a high performance 1 3 HP HVAC replacement motor engineered for precision airflow in residential and light commercial air handlers and furnaces. Operating on 115V single phase power at 1075 RPM, this 4 speed furnace motor (48 frame size) provides the versatility needed to tune system CFM for optimal static pressure and heat exchange efficiency. As a genuine OEM Lennox part, the 28M89 ensures a direct drop in fit,