View attachment 3995358 I originally replaced my maxcan fan pro (170w) with a hyperfan (75w). I now have 2 8" hyperfans for intake/exhaust and out carbon filter and 1 6" hyperfan hooked to a carbon filter and UV light as a scrubber. I dialed everything down until I have a little bit of negative pressure in the room and the whole system pulls less than 175 watts. I am also using the wall as my ducting. The 8" intake is pulling air from 1' off the ground, thru a pre-filter to the top of the room. The 8" exhaust is taped straight to the filter and into the attic. The 6" fan also uses the wall and pulls air off the ground, up the wall past the UV light (kills anything that pass it) and into the small carbon filter.