The Healthy Juicer Electric Changed the temperature the most at 12.4 degrees F.
For fun, to demonstrate the heat transfer, I took a whole carrot, and shredded it against a standard "fine shredder" like you would use if you were shredding carrots over a salad.
The 24 ounces of carrots were fed into each machine and the temperatures were taken.
The temperatures were taken with an infrared thermometer.
This was due to the friction caused when juicing the wheatgrass.