It is important that women have control over the temperature of the birthing room. They may vary that temperature at different times of their labour. Once the baby is born, the room needs to be warm so that the baby does not get cold.
Symon, A., Paul, J., Butchart, M., Carr, V., & Dugard, P. (2008b). Maternity unit design study part 3:environmental comfort and control. British Journal of Midwifery,16, 3, 167-171.