I have the one UTH running 24/7, there is no temp control on it. I plan on going to Home Depot to get a better thermometer than the on I have, and the aluminum foil tape sounds like a great idea.
I am also reading about a ceramic heat emitter as an option but feel that when I turn it off at night the temp will be to low for him. Maybe the Lutron Lamp Dimmer is my answer. Also have heard that the heater can dry out his home.
How do you control the humidity with a ceramic heater?
I feel that if I have a 2nd UTH I will not have a hot and cool side just one single temp. Not sure if leaving part of the screen will be enough to control this.
It sounds like the ceramic heater will be the best option unless kills the humidity.