Heated Washer Fluid Systems

SKU: 49

AlphaTherm Heated Wash click to enlarge
Heated Wash On-Demand
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Alphatherm HeatedWash cross section
The Heated Wash AT-38OD operates in “On-Demand” mode.

The unit starts to operate when the ignition is on (engine running) and battery voltage level is 
higher than 13.0 volts.  Once the unit is activated, the washer fluid inside its heating chamber 
will be heated and kept within pre-determined temperature limits (140 – 150°F), so there is 
always hot fluid inside the unit’s heating chamber which can be used by a driver for cleaning 
the windshield.  

Each time the driver activates the factory installed washer system, heated washer fluid is 
applied to the windshield for approximately the first 3 seconds of spray. Three seconds of the 
spray delivers approx. 50-60 cc of fluid that is considered sufficient amount of fluid for one 
spray. The next portion of heated washer fluid is available in 10-20 second(depending on 
ambient conditions).

The HeatedWash unit uses full power of 50 Amps for 30 seconds to heat the washer fluid up 
to pre-determined temperature limits (140 – 150°F), and minimal power to keep it within these 
limits. The unit’s power consumption is less than 2 Amps per hour.  

Once the unit starts to operate (engine is running), it will heat the washer fluid in approximately 
30 seconds; driver operates the washer system manually to spray the heated washer fluid 
onto the windshield. Recommended duration of spray is 3 seconds. Driver can spray as many 
times as he wants. Best results are achieved  when time intervals between sprays are approx. 
20 seconds.