Quote Originally Posted by alyssa_lennon View Post
I do have a thermostat, but if it is 104F outside, even if I have the t-stat set at 92F, it will be hotter than that... or if it is 30F, I will need to set the t-stat at a higher temp to achieve 92F, that is what I meant. And I am not home during the day to make those changes, I was wondering whether insulation will help me prevent temperature variations in the enclosure...

Thanks for the imput guys!
I'm wondering if instead of another UTH you might want to get a radiant heat panel and put it on a timer and t'stat for the ambient temps for the evenings.
Gosh, this is really a tricky situation.
In the summer where I live day time temps average around 80-85F and drop to 35-40F at night. The ball pythons are all in the warmest room of the house to help with their ambient temps at night. My boas all get RHP's since they are in the living room where it is chillier.
I'm thinking that a combination might be best for your situation- though I am far from certain....