Using Antminer S19J Pro as a heater

Hey there! So I'm looking to repurpose my S19 J Pro as a space heater, but I've got issues with the noise and power draw. Right now, I'm on braiins OS+ and the minimum I can set for all 3 hashboards is 1700w. The firmware just won't let me drop it any lower. Even with Noctua fans cranked to 2000rpm to keep the noise down, the hashboards still overheat. Ideally, I'd love to get it down to 1kw for all three hashboards. With my S9, I can set it as low as 300w, and that keeps my bathroom warm without much noise. But 1.7kw is really too much for my apartment and super loud. Has anyone else tried something similar?

2 boards of 3 set to 60th will give you 40th and 1200 watts. fans set to 30% will be fairly quiet see my 2 threads t21 thread https://bitcointalk.org/index.php?topic=5491800.0 s19 xp https://bitcointalk.org/index.php?topic=5485850.0 you can get it fairly quiet but not truly quiet  rpm at 3000 or so. or you could really effort by buying this controller https://altairtech.io/product/epic-umc/ and these fans https://www.ebay.com/itm/156038688016? when set to 30% speed they will be good enough to cool the unit  if you run 2 boards at 60th giving 40th and 1200 watts they will do about 2800 rpm and be marginally quieter.