If ya need heat.. add a light.. or two.. hehhehehe

or 3....


7000 watts in a 10x12 room ......
with 25 degree outdoor air ventilation is perrrrfect


they sell these cooling thermostats -
http://www.plantitearth.com/store/pr...id=133&catid=5

Sounds perfect for your situation... you plug your exhaust fan into this "thingy" and set the temp.. when the temp in your room goes above "the setting" it turns your exhaust fan on..