Using a heater in winter in your room for your baby can be helpful in keeping them warm, but it should always be done with proper care and attention. Babies are more sensitive to heat than adults, and excessive warmth or dry air can cause discomfort, dehydration, or breathing irritation. The room should feel comfortably warm rather than hot, allowing the baby to sleep peacefully without sweating. The heater must be placed at a safe distance from the baby’s bed and should never blow hot air directly toward the child, as this can dry the skin and airways.