I've did a search on location of NVR and hot rooms with any problems of overheating and could not find anything. I have NVR 5216-16p-4ks2 and 7 HDW5231R-ZE cameras I am about to install. I wanted to install NVR in the master bedroom but it is located at top most floor and gets quite hot upstairs in the summer. I have a few options with one in the lower level which is much cooler or the bedroom as I discussed. Is hot rooms in the summer cause for problems or issues related to overheating?