Just keep them warm (a heated room) and near a window and you'll be fine.
Outside even in summer can be too cold for them (I got virtually no fruit off mine that was outside, only when I brought the biggest plant indoors in Octorber did it start throwing chillies out - still is.
Outside even in summer can be too cold for them (I got virtually no fruit off mine that was outside, only when I brought the biggest plant indoors in Octorber did it start throwing chillies out - still is.