That was sort of the solution initially, using Dell Wyse thin clients with Teradici cards. But those devices are failing and from what I see are very expensive to replace so I was asked to try and come up with an alternative.
EDIT: You're also right about the fan noise, thanks for replying.
The network is 1G and there is some segmentation, some of the devices do need to share files with devices on other networks. Eventually I'd like to just get everything that needs to talk to each other on one network and partition the rest but that will take some time to implement. Thanks for replying.