Markel ET9DTS Thermostat 320819-301 This belt-type heater ensures the

This belt-type heater ensures the lubricating oil remains at a low-viscosity state

This component

The flashing LED is a diagnostic indicator

protecting sensitive expansion valves and compressors from system contaminants

This front cover is designed for a wide range of Amana and Goodman units

Markel ET9DTS Thermostat 320819-301 This belt-type heater ensures theThe Markel ET9DTS Thermostat is a professional grade line voltage thermostat designed specifically for heavy duty electric heat applications. This industrial double pole single throw (DPST) control provides high capacity performance for resistance heating elements and unit heaters in commercial or residential settings. Built with a bimetal bimetallic actuator and a snap action switch, the ET9DTS ensures reliable cycling and a long service life under