ASU Cooling Units

Cooling Units with Automatic Start Up (ASU) Technology


The Isotherm ASU technology detects when a surplus of power is available like when you're running an engine or from solar panels and runs the compressor at the highest speed to freeze the holding plate. This storage of cold is used to achieve unbeatable power savings.  

When on battery power alone with no surplus power, the ASU technology uses the cold in the holding plate like an artificial block of ice to minimize compressor run time, then runs the compressor at the slowest rate of speed to consume the least amount of battery power.

Together, the adjustment of speed of the compressor and the cold stored in the holding plate reduce battery consumption by 30 to 50 percent under typical cruising conditions.


Service & Downloads


Indel Webasto Marine USA Inc,

3400 Gateway Drive, Unit # 107

Pompano Beach, FL - 33069