Inlet's and outlet's do not stack proportionally with vents until they are used for some time in the game. They would keep a constant rate of heat giving/taking while vents increase with upgrades (whereas inlets and outlets should also increase with the same upgrade). This is a bug i've been experiencing for quite a long time
nerdook, I simply love the design that u make, it makes me think of sometin classic +the gameplay is always very good. Her's a tip. Why don't u start workin out on somen big u know liek a massive multiplaye game try goin really original!