My Loki Mini + operates at what I’d call acceptably warm temps as long as it has good breathing room — right now it’s got 5”+ empty space above it, 2” clearance on left and right sides, and lots more room behind and in front to breathe. At one time, I tried shoehorning components into that shelf such that all the above measurements were the same except on the sides which were essentially blocked. Bad move and one I considered myself lucky to have learned from without burning up either Loki Mini + or house!