i considered doing that for a while. i now just my timing set so the lights are on overnight when its coldest out to keep the temps up, then off during the day so the temp doesnt fluctuate too much. i do have a space heater in the room that i turn on if the temp starts to get too low. havent gotten around to getting a thermostat, did you have one in mind?
Alot of space heaters have thermostats built in i believe.
My issue is that i have to run my fans on high to keep temps in check but doing that without any kind of intake in my room (using 2 420cfm) is forcing my gas furnace to work overtime because those fans are immediately sucking up all my warm air and replacing it with cold drafty air. I think. So what i believe ill do is use a third fan (stanley) and pull cold air from the attic into the whole bedroom and not just the light or tent.
That cold air should cool the room down enough for me to throw some speed controllers on my fans and run them half speed.
Im thinking ill have the stanley plugged into one of my timers so it only on when my lights are.
Once summer roles around ill have to redesign everything but i guess ill just cross that bridge when i get there.