The HED-H is the heat exchanger component of the HED-W thermoelectric chiller for chemicals. The peltier element regulates the temperature of liquid chemical passing through the heat exchanger. Facility water connections are included in this unit. Wetted part materials include fluororesin 304 stainless steel and 316 stainless steel. Select this model if you require a replacement heat exchanger. This component will not operate without a controller.