I seem to have encountered a problem I did not anticipate. It get's quite hot in here, it is located in the basement and has no ovens but still it reaches 75 when I'm in here working on the computer. This electronic equipment is generating more heat than I thought, and the room is quite good insulated with concrete on three sides.
Running the fan periodically now to reduce the temperature to around 70. This might be a problem in the summer months... But I have some time to think of a solution :)