There is a radiator inside of the ICE BOX...
With water circulating from a chilled tank through the radiator, the air being drawn over the light gets cooled...
They claim that if you have cold enough water running in the system, the air coming out will be cold enough to shut off the AC unit in Florida...
I like that idea...
Plus, without having to vent because of temperatures, you can apply heavy and constant doses of CO2 without loosing the gas....
Not ideal for everyone, but I am sure there are a few ops that would greatly benefit from one of these... if at a high cost...
But I am sure a person could make one... all it is is a radiator with a flange to match your hood...
Hope this helped..
But you do have a very good point, a professional grade installation is a must..
I can only imagine the size of the fire if "stoner dude" "forgets" to tighten a hose... and "thinks" it's ok to run it without a test...lol..
Careful installation and monitoring would be all it takes for a safe set-up...
Cheers...