Ya true but I got a nice vent in my loft which I hook up my fan and pipe to so got lots of nice cold fresh air in which keeps the heat down and I'm using two 600 watts plus a 400watt too so heat was a big issue for me and I only had one big 6inch inline fan was using for carbon filter but changed it around this time it's a bit more stinky without but got to hot with just carbon filter and fans