Yo. I had this same problem and found a great solution after some time and research and totally use my S9 to heat my apartment. (Mainly as a small space heater).

What you have to do if you are going for quiet is replace the fans first. The Phanteks T-30’s (about $30 each on amazon) are great replacement fans but they max out at 3000rpm, but they are almost dead silent. When it’s all said and done the loudest thing is the power supply fan…. The downside (if you want to call it that, i personally think its a positive) is that you need to use BrainsOS+ and keep the S9 running at 1200 watts or less because the Phanteks will only spin up to 3000 rpm unlike the stock fans that spin at like 6000 and are loud af.

Ends up being a great, quiet miner that you can tolerate for hours at a time sitting in the same room with. I can sit by mine a few feet away and forget its even on.

Feel free to DM me if you want more info to pursue this path. A few more small details to mention but generally thats all you need and it works great.

#Bitcoin #plebchain