How much less power does a SP or Magnum consume?
Isotherm SP is available in different versions, both with ASU – “Automatic Start Up” in combination with a holding plate, or with a traditional thermostat control and a direct evaporator. In normal northern European waters, an SP-type unit will have a 10-20 % lower power consumption compared to that of a corresponding air-cooled unit. In tropical conditions, however, when savings are most needed, power consumption can be reduced by as much as 30-50%. This efficiency increase is largely due to the greater difference between sea and air temperatures in these waters. Sea water temperatures are normally in the region of 77-86F, whilst the air temperature inside the boat where the compressor is installed can be 85, 105or even 120C.
