Should I use a humidifier in my baby’s room?
You don’t need one all the time, but a cool-mist humidifier can help a congested baby breathe more comfortably, and the AAP suggests one when the air is dry. Place it so the mist reaches the sleep space but your baby can’t reach the machine, change the water every day, and clean it as the manufacturer directs. Never prop up the mattress for a stuffy nose.
What the AAP says
For a baby with a stuffy nose, the AAP’s parent site suggests a vaporizer or humidifier that fills the sleep space with a cool mist to help clear nasal passages. For colds more generally, it says that if the air in your home is dry, use a humidifier, because moist air keeps mucus from drying out.
A humidifier is a comfort measure. It does not treat an infection and it is not needed for healthy sleep.
Using one safely
- Cool mist. The AAP’s advice for babies describes a cool mist.
- Placement. Close enough that the mist reaches the sleep space, but out of your baby’s reach, as the AAP advises.
- Cord. Keep the cord out of reach of the crib.
- Fresh water daily. The AAP says to change the water every day and follow the manufacturer’s directions to keep mold and bacteria away.
- Nothing added. Use plain water only. See essential oils and baby sleep.
- Not too much. Damp walls, wet windows, or a musty smell mean the room is getting too humid. Turn it down or off. In humid climates or summer months, adding moisture can make a room feel stuffy and encourage mold.
A humidifier eases congestion. It does not fix sleep that was broken before the cold, or habits that grew during it. Once your baby is well, that sleep is the part Actually Sleeping fixes.
Other ways to ease a stuffy nose at night
The AAP suggests:
- Saline drops to loosen congestion. Use plain saline with no medicine added.
- Gentle suction with a bulb syringe or nasal aspirator. Squeeze the bulb before placing it in the nostril.
- Feeding before sleep, once the nose is clearer, so your baby is not trying to feed through congestion.
Cough and cold medicines are a separate question for your pediatrician; see cough and cold medicine at bedtime.
What not to do
The AAP is clear that propping your baby up on towels or pillows, or inclining the mattress, is not safe, even with a cold. Inclined sleepers are banned. Babies sleep flat on their backs on a firm surface with nothing else in the crib. See inclined sleepers and loungers.
When to call the doctor
The AAP’s parent site says to call your pediatrician if:
- Your baby’s breathing is much faster than normal
- Their lips or face turn bluish when they cough
- Nonstop coughing is keeping them from sleeping, eating or playing
Call 911 if your baby is struggling for each breath, can barely make sounds or cry, has bluish lips or face, or seems to have something caught in their throat.
When the cold is not the whole story
Parents often reach for a humidifier because the baby is not sleeping. During a cold, congestion really does wake babies. But a humidifier won’t fix night waking that started before the cold, and it won’t help a baby who has learned to need help falling back asleep. If your baby was waking often before they got sick, the cold may have made an existing pattern louder. Colds also leave a sleep hangover: extra night feeds and new habits from nights of comforting, which were the right response while your baby was ill.
Once your baby is well, that sleep is the fixable part, and it is what Actually Sleeping does. Dr. Sam writes a plan for your baby, you get bootcamp-style coaching before the first night, and daily 1:1 check-ins pause the plan for illness and restart it when your baby is better. Night feeds stay in the plan until your pediatrician says otherwise. Hear from families in our 129 client video reviews. See also sleep after illness.
If your baby is well again but nights are not, book a free consultation with Actually Sleeping.
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Frequently asked
Cool mist or warm mist for a baby?
The AAP’s advice for babies with a stuffy nose describes a cool-mist vaporizer or humidifier. Whatever you use, keep it out of your baby’s reach, change the water daily, and clean it as directed.
Can I run a humidifier every night?
You can if the air is dry and the room doesn’t become damp. It isn’t needed for healthy sleep. Change the water every day and follow the cleaning directions to keep mold and bacteria away.
Can I raise the head of the crib for a cold?
No. The AAP says propping your baby up or inclining the mattress is not safe. Use saline drops, gentle suction and a cool-mist humidifier, and call your pediatrician if breathing worries you.