I have an older Adler Barber, and due to the fact that it is R-12, I have limited options for it, and am considering going to the new Ice Box Conversion kit from Engel...

So the question I have is which is likely to use less power? A new Adler Barber or the Engel conversion?

https://www.engel-usa.com/products/new-products-13/ice-box-conversion-kit