> not sure about ventilation i assume you'd always need ventilation, because if it is enclosed, the produced heat will just accumulate and go above 70c eventua

> not sure about ventilation i assume you'd always need ventilation, because if it is enclosed, the produced heat will just accumulate and go above 70c eventually. But ventilation is much cheaper than heating/cooling (and can be a passive vent rather than anything active - thus taking zero power to run except for maintenance/replacement).