How to setup so that warm air is pulled into cold room automatically?

Opposite the winter flower room will be veg room. flower room will have climate control and dehu/heat/ac combo. since lights are air cooled blockbusters 1000W and the veg room about 10 feet away gets the coldest in the house, I was thinking would it be possible to pull air from the ceiling area of the flower room, into the floor area of the veg whenever veg starts getting too cold? would have to make a pretty hole in the doors for the ducting but it's doable. how would one wire or what equipment would be needed? I was thinking fan (unsure on cfm), 6" ducting, and controller, and plug the fan into the "heater" plug or whatever it's called, but realized most controller only have "cool, night light and co2"- nothing for heat?

http://www.growerssupply.com/farm/s...rollers-gs_durostat_thermostats;pgcr2095.html

Something like this. They can be rewired for heat or cool and will come with instructions.

sweeettttt!