Dual 120mm Fans to 4in Hose Adapter

thingiverse

As summer-time approaches my area, I regularly see temperatures of 100F+. This fan duct helped reduce room temperatures by up to 10F consistently, and helped maintain my set A/C temperature. Included is a split and single variant, with the split being created for smaller printers such as my own. The split is symmetrical is connected with two sets of #10 machine bolts I had lying around. You should be able to substitute a M4 nut and bolt. I recommend attaching the split parts onto your PC before connecting the two, as the connector blocks the two fan holes. Set all the fans in your PC as intake, except for the ones attached to the fan duct. This will dramatically reduce the amount of heat that exits into your room. I also recommend tuning your exhaust fans to near 100% fan speed while gaming or doing extensive tasks as your PC temps will suffer with the fan configuration. Other fans can sit at a balanced or even silent configuration. My setup (i9-12900k & RTX 3070ti) sees CPU temperatures settle around 60-70C with GPU temps at 60C with these changes. The hose and window vent were purchased from Amazon, but any 4in hose and 4in window vent you have lying around will do the trick. The Amazon items included the hose clamps I needed, so I didn't have to make the extra trip to the hardware store. (Non affiliation links) Hose - https://www.amazon.com/dp/B07WRDTX4C?psc=1&ref=ppx_yo2ov_dt_b_product_details Window vent - https://www.amazon.com/dp/B0BN12BCTB?psc=1&ref=ppx_yo2ov_dt_b_product_details ** Update 8/11/2023 ** Added single 120mm variant, mostly for my printer's exhaust fan