Higher temperature of the brine, gives lower energy consumption
This is practically verified in e.g. Sollefteå ice rink, after 5 years of operation with deionized water. Normally this allows an increase of the temperature by about 2 degrees Celsius.
Theoretically, this is due to the fact that cleaner water freezes at a higher temperature compared to normal mineral containing (tap) water, furthermore supporting the formation of 'hydrogen bonds' between the water molecules.
Further reduces the freezing of moisture (energy absorption) from the environment where the salinity of the ice surface is low.
For every degree increase in the temperature of the brine, the electricity bill of the compressors is reduced by approximately 4-5%. In addition to this, anti-humidity devices does not need be in operation as extensive as otherwise, which also gives a save in energy.
Reduced wear on the Zamboni cutting blades
Since there is no formation of salt crystals on the ice surface, the wear on the cutting blades of the Zamboni is reduced.
The deionized water freezes faster after resurfacing.
Higher 'transparency' of the ice
Since deionized pH neutral water solves much less air than tap water, the ice becomes more transparent, making the lines more visible.
Better glide and skating properties
A salt and mineral poor ice surface produces less wear on the skating rink and even less friction (better glide).
Less 'formation of snow'
Since the ice gets a tougher structure when salts and other pollutants have been reduced, less disruptive wet snow is formed during the match.