Quote from: takagari on November 25, 2016, 04:05:09 PM

Your big concern with the setup, I think is that you want to have an in and out fan beside each other,
Your best bet will be to pipe in the outside air to the back side of the room.
You could likely run 2 5" dryer liners in over and down the back wall, and get away with a large exhaust fan.

As for the CFM you are after, you will never get a silent version. That's going to be hella noisy lol

Yes let me just explain to my landlord why i want to take down a wall from his apartment so i can have two windows Tongue

And i never said silent, two box fan at full speed arent silent at all and the CFM is plenty, they just dont have enough pressure so a bit of wind and BAM they basically stop their spin. A metal equivalent with more angled blade would be quieter, but much more performant!

Quote from: fullzero on November 25, 2016, 01:59:54 PM

I mined with ~5kw of gear in an apartment before. After going through a bunch of fans I eventually got this one. It is a beast; by simply running it on high with a second window open elsewhere ( otherwise you get mixed pressures ) it would lower the temperature in the apartment by 30 degrees in under a minute. Can run as intake or exhaust without moving the fan. One of these should do the trick; 2 of them for sure.

https://www.amazon.com/Lasko-2155A-Electrically-Reversible-16-Inch/dp/B00FXOFNYQ/

I saw these before, seemed flimsy and low CFM. I didnt try them because they seem to be built around fitting the shroud in the window opening and mine is 16.5inch~. But i was hoping to find a reversible fan like that, made from metal, that would fit my windows. I wonder if i could remove some excess mounting material so i can fit 2 in the kitchen (much bigger window) come summer. I could maybe turn the place into a farm and go live somewhere else. Hrm.

I went with the 20inch metal boxfan since it has several time more pressure as the plastic ones, it should be able to pull air through a filter (so the snow doesnt get in).

Quote from: nitromining on November 27, 2016, 07:42:44 PM

Furnace style fan is the way to go. Check this out.

https://www.acklandsgrainger.com/en/product/BLOWER-ASSEMBLED-115-VLT-3-SPD/_/R-GGE1XJY3

Thats an interesting idea. The blower type fan i saw were extremely loud, i wonder if i could build an array of them (slower/quieter ones) and pipe the exhaust to a wooden frame that would hold the exhaust in the window.

Way too expensive setup for my usage but maybe for my next place. Hrm. Definitively noted.