Item #870763

Isotherm 2050 SP Water Cooled Refrigeration Component System - U125X000L11311AD

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Only compatible with Model XA extension tube sets; item #872073. Model XA tube set couplings have red and yellow plastic caps.

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Image of : Isotherm 2050 SP Water Cooled Refrigeration Component System - U125X000L11311AD Isotherm 2050 SP Water Cooled Refrigeration Component System - U125X000L11311AD Item # 870763


Create a small refrigerated compartment on your boat with the Isotherm 2050 SP water cooled refrigeration component system. It has all the components you need for a successful installation, It's water cooled and self pumping so the heat exchange occurs in the water, keeping your boat cooler.


  • Isotherm Compact SP 2050 Compact Classic water-cooled with self pumping thru-hull
  • Fridge or freezer use
  • 12 / 24 V Danfoss / Secop compressor
  • Power consumption: 0.7 Amps Hourly (Max: 3.5 Amps)
  • Easy installation thanks to "click-on" system
  • Self Pumping (SP) system to reduce the noise of a ventilated condenser and reach a very low power consumption
  • Evaporator: Large-Flat
  • Large "L" Evaporator Dimensions: 16" (400 mm) x 7" (170 mm) x 8" (210 mm)
  • Maximum Box Volume: Fridge: 4.4 cu ft (125 liter) / Freezer: 1 (41 liter)
  • Optional Universal kit AC / DC optional for a complete power supply compatibility (12 / 24 V, 230 / 115 V and 50 / 60 Hz) (Sold Separately)
  • The Isotherm warranty is 2 years from the date of purchase on all components and a 5 year limited warranty on the compressor


  • Maximum Fridge Volume: 4.4 (cubic feet)
  • Maximum Freezer Volume: 1.5 (cubic feet)
  • Evaporator Dimensions: 16 x 7 x 8 (inches)
  • Evaporator Shape: L-shaped
  • Compressor Dimensions: 8 x 5 x 6 (inches)
  • Amps Power Consumption max / hourly: 3.5 / .7 Amps
  • Compressor type: BD35F
  • Temp range: Fridge or freezer

Installation Instructions

Part Numbers for Isotherm 2050 SP Water Cooled Refrigeration Component System - U125X000L11311AD

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Is the “self pumping” through hull a keel cooler or is water actually pumped? Also, is it possible to get an evaporator like the one used in the 2501?

Asked by: CaptLen
The SP is not a keel cooler, it is more like a heat exchanger, the condenser cooling loop is wound inside the SP thru-hull and the heat is transferred to the water outside the boat. The rocking motion of the boat moves water in and out of the thru-hull. This is efficient in water up to 28°C= 82.4°F If you frequent warmer areas, you would need to go with a water pump cooled unit. We can special order the SP 2551 kit with the Large O evaporator. Please email [email protected] for price and availability.
Answered by: Upwind
Date published: 2023-11-22
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