I have note, yet. May try in a couple months when we start heating up.
My snake room usually runs an ambient temperature in the low 80s during our summer months. I am thinking all the THG also raises the ambient a degree or two.
I would love to see how much it would lower my electric bill..... Don't think it would be enough to offset the a/c in the shed for the rats.
Not going to high jack more than saying its not needed to drop the temperatures.