CHE = ceramic heating element
None of the glass cages are going to be great for heat or humidity. Pvc is best.
These are just two examples. There are many good companies out there. Search the threads here and you will find alot of info on them.
http://www.animalplastics.com/ Check out the T3
http://www.boaphileplastics.com/cages.html
Don't think I'm saying you should change. I have a ball in a tank because I like how it displays. You can make it work it is just not as efficient as other types available.