Thanks for all the replies. I have been reading other threads about RHPs because I am getting ready to place my order, but most of them keep repeating that Radiant Heat Panels do not raise the ambient temperature.

In the winter, the temperatures in the room they must stay in after quarantine can drop below the low 60s. Heating the room is not an option for multiple reasons. Considering the amount of money I am about to drop on these two enclosures, I want everything to work year-round, automatically, without any fuss. If RHPs cannot raise the ambient temperatures in the PVC cages 20+ degrees (if necessary), I need to go with something else. I don't like CHEs for multiple reasons but if I need that instead to deal with the ambient temps, I will have them put in the screen cutouts and find a way to deal with safety/humidity issues. Does anyone have any input?

Again, heating the room is not an option and the ambient temperature in the cages may at times have to be 20+ degrees higher than the rest of the room.