I provide ambient heat in the winter for my snake rooms my setting up multiple 150W CHE's in fixtures distributed around the room attached to a proportional thermostat. If one emitter goes out: The others will increase their output to compensate. As the emitters are only 150W each and easily fixed in position and spread out: they do not provide the focused blast of a 2000+W space heater. Online pet supply stores will occasionally run sales on CHE's and you can get them fairly cheap. ($15-20 ea.)

I have no issues with low humidity-as most of the issues I've run into historically-stem from too much humidity.

Using this setup also makes things easy during a power outage as you can run a single power cord from each room straight to a generator plug.

I'm sure there are many to do it: I just find this the most convenient for my setup.