Tomatoes and Chives update

I have been able to cut the chives that I have moved to the window. I still have had no luck with the tomatoes. They are still green. I have been using a small space heater to try to warm up the room. It has been getting warmer outside, so the house should start warming up soon. I suppose I could also move the AeroGarden to the window. What do you think I should do?