To start seeds this year, I brought the seed flats upstairs and set them right by the heating vent, hoping they would germinate faster then they did in the (cooler) basement last year. And it worked! The seeds are sprouting, and I just moved them all to the basement to put them under lights. Peppers are still upstairs until they sprout.
My biggest concern this year is keeping the cats away from the plants. Last year I was able to keep them away by keeping everything shut in the basement, but since then, they’ve learned how to open the basement door.