Alpha Therm’s Heated Washer Fluid Reservoir is a great compliment to our Heated Windshield Wipers.¬† This unit operates in “On-Demand” mode and starts to operate when the ignition is on and battery level is higher than 13.0 volts. ¬†Once the unit starts to operate (engine is running), it will heat the washer fluid in approximately 30 seconds; driver operates the system manually to spray the heated washer fluid onto the windshield. Installation includes the following: