No sense make to cool with water. Cost too much monies and eat into profit.
My waterblocks have paid for themselves by making the GPUs run colder and use less power. Warm silicon leaks more. Other than the water blocks, liquid cooling is almost free. A pump don't have to cost more than 20 USD. Tubes and stuff cost less than a replacement fan. As a bonus you can place your miner anywhere and dump the heat anywhere.
Mining heats my house without making noise. Here is an old post with outdated pictures
of my setup. The WAF
of this setup is very high, and you get a nice excuse for buying more mining gear! :-)