First off, love this mod. Nothing like building a massive factory in the tundra. However, I wanted to point out that for some reason, inserters have a rather buggy time working with the heaters. I'm guessing it's because of the heater outputting a liquid instead of an item. They'll work at first, but then just refuse to insert more snowballs after a certain point, even if the system still needs water, EVEN if I use a circuit linked to a chest to force it to always work. I know by the time you get past the early game you should use an offshore pump, but for those that want the extra 'challenge', or just like snowballs, it might be something to look into.
