I'm sorry... it's too early here
I thought you had the dimmer before the thermostat (in respect to the wall). Let me kick it around for a minute. I have to go to the dentist in a little while, so I'll ponder it while I'm there
My initial thought is still that two power control devices plugged in together could be problematic, but I could be wrong.
BTW, cool name for your normalI watch A LOT of Pokemon thanks to my 2 & 5 yr olds.