How short you want the hardware to last is really up to you, but all electronics last longer the colder they are kept while operating. (Putting electronics in a box with no external airflow to remove heat, I call that an oven!)
If you flip the Arrhenius equation* (The reaction rate doubles for every 10 degrees Celsius increase in temperature.) on its head, you eventually end up with “every 10°C drop in temperature increases the life of electronics by a factor of two”.
*The Arrhenius equation is heavily used by silicon chip makers, those who want to fully remove early failures, the “infant mortality” section of the “Bathtub curve”. This is achieved by operating their chips inside ovens for a few days to weeks at high temperature to force chips to fail that would have failed in the first 6-12 months of operation to fault in a much shorter period (it is basically a form of super accelerated burn-in).