HVAC Register Booster - 120mm fan
thingiverse
So the A/C in my room has been underperforming for a while. The register is the furthest it can possibly be from the furnace/blower, and it's the last one in the duct system. I wasn't about to spend $30-$100 on a register booster when I had $50 worth of perfectly good fans and a $750 manufacturing tool at my disposal, so 20 hours of printing (had to split it into 2 parts) later; boom. Homemade A/C register booster. This uses 2x120mm computer fans. I used 5V Noctua NF-F12s.
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