Q: My 17-month-old has a fever, but our room is cold and drafty. Can I use a heated water mat on a lukewarm setting?
Updated: Sep 7
Medically reviewed by Sang Hyun Ahn, MD
Content edited by Myeongchan Kim, MD
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question:
Our house is very drafty. Even when I turn on the humidifier, the humidity rises but the air around the baby's bed remains very cold. When my 17-month-old baby has a fever, is it okay to use a heated water mat on a lukewarm setting?
My baby's fever reached 39.4°C (102.9°F). I turned off the mat when the fever was at its peak, but turned it back on when the temperature started dropping a bit. However, when the mat is completely off, it's so cold that even I feel freezing lying there. Should heated mats be completely turned off when toddlers have a fever?
Answer:
I understand how challenging it must be to care for your sick baby in a cold room.
Core Principle
When your baby has a fever, you should turn off the heated water mat completely. Even a lukewarm setting can interfere with your baby's natural body temperature regulation and cause the fever to rise further.
Immediate Actions to Take
• Turn off the heated mat entirely and use only a single, thin blanket for your baby.
• Maintain a comfortable room temperature between 22–24°C (71.6–75.2°F) using a room heater.
• Dress your baby in 1 to 2 layers of light, breathable cotton clothing. Avoid thick clothing.
• Offer fluids frequently in small amounts to prevent dehydration.
• Administer fever-reducing medication only if your child is uncomfortable.
How to Manage a Cold Room
• Instead of a heated mat, use an indoor space heater to warm the ambient air in the room.
• Block cold drafts coming from windows using weather stripping or thick curtains.
• Running a humidifier alongside the room heater can help increase the perceived temperature in the room.
Please keep the heated water mat turned off until your baby's fever has completely resolved and their activity levels return to normal. Focus on warming the air in the room instead of applying direct heat to the bed. If the high fever persists, or if you are concerned about your child's overall condition, please consult your pediatrician for an in-person evaluation.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
