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Nursery humidity: monitoring and control with Shelly 

The right nursery humidity keeps airways healthy and prevents mold. With Shelly you keep indoor air in view, react to changes and create an ideal climate for sleep and play.

child draws a rainbow on the window; optimal indoor air protects the airways and prevents mold growth

Why is humidity in the nursery so important?

The right humidity in a child’s room is crucial for health and wellbeing. Air that’s too dry dehydrates mucous membranes and airways – colds and irritation may follow. Too much humidity fosters mold growth, especially on cool exterior walls where water vapor condenses.

Babies and toddlers are particularly sensitive to an imbalanced indoor climate. The optimal humidity protects mucous membranes, improves sleep and prevents mold. With Shelly this balance stays reliable over time. 

mother with smartphone and child; monitor temperature and humidity via the Shelly app

Optimal values: temperature and humidity for children

A kids’ room should be comfortable but not too warm. At night, 18–20 °C supports calm sleep and is gentle on the airways. During the day when your child plays or reads, 20-22 °C feels cozy without drying the ambient air. Avoid overheating to keep a healthy indoor climate. 

The ideal nursery humidity is 40-60 %. If it’s too low, mucous membranes dry out; if it’s too high, there’s a mold risk, especially on cold exterior walls where water vapor settles. Automatic humidification or ventilation – controlled with Shelly – helps keep values stable. 

 

Kidsroom with shelly temperature humidity sensor

Shelly sensors for monitoring humidity and temperature

With Shelly sensors like BLU H&T ZB and H&T Gen3 you always see temperature and humidity in the kids’ room. BLU H&T is splash-proof and dust-tight, and it also suitable for covered outdoor areas. H&T Gen3 shows values directly on a display and, thanks to the new Shelly chip, reacts even faster. 

Both measure the indoor and ambient air precisely and send values to the Shelly Smart Control App. Track changes in real time and spot trends – ideal to humidify air in time when it’s too dry or to ventilate when it’s too humid. Together with other Shelly devices you can create automations that control fans or humidifiers automatically, keeping the room climate pleasant and healthy for playing, learning and sleeping. 

Our sensors are also available in different colors:
Shelly H&T Gen3 Lista
Shelly H&T Gen3
22,78 € 37,96 €
Shelly BLU H&T ZB Mocha
Shelly BLU H&T ZB Mocha
18,74 €
Shelly BLU H&T sensor measures temperature and humidity for a healthy kids’-room climate

Air too humid: avoid mold risk 

If humidity in the kids’ room stays high, mold risk rises, especially on cool exterior walls, behind furniture or in corners. Moisture damages walls and burdens the airways. 

Prevent mold effectively: 

  • Ventilate, especially after playing or sleeping 
  • Keep furniture slightly away from walls for air circulation 
  • Don’t dry wet clothes or towels in the kids’ room 
  • Monitor humidity with BLU H&T ZB or H&T Gen3 
  • When too humid, automatically switch on fan or dehumidifier via the Shelly app 

Result: fresh indoor air and reliable protection from mold and damp ambient air. 

parent with smartphone; automatically control humidifier or ventilation via the Shelly app

Air too dry: causes, effects and solutions

When humidity is too low, you notice quickly: dry skin, irritated airways and poor sleep.

Save heating costs – woman’s hand on a window handle; airing with Shelly BLU Door/Window prevents unnecessary heat loss
CAUSES:

- Heating air lowers humidity in enclosed rooms

- Too little ventilation means missing outside air

- Devices used by older children give off heat that dries the air 

Shelly Europe
EFFECTS:

- Irritated mucous membranes and dry airways 

- Fatigue, headaches and restless sleep 

- Dust-laden ambient air 

Shelly Europe
SOLUTIONS: 

- Ventilate regularly with brief, strong air exchange to bring in moist outside air 

- Use a humidifier and control it via the Shelly App 

- Monitor humidity with BLU H&T ZB and H&T Gen3 and automate humidification 

Save heating costs – woman’s hand on a window handle; airing with Shelly BLU Door/Window prevents unnecessary heat loss
CAUSES:

- Heating air lowers humidity in enclosed rooms

- Too little ventilation means missing outside air

- Devices used by older children give off heat that dries the air 
Shelly Europe
EFFECTS:

- Irritated mucous membranes and dry airways 

- Fatigue, headaches and restless sleep 

- Dust-laden ambient air 
Shelly Europe
SOLUTIONS: 

- Ventilate regularly with brief, strong air exchange to bring in moist outside air 

- Use a humidifier and control it via the Shelly App 

- Monitor humidity with BLU H&T ZB and H&T Gen3 and automate humidification 

Automatic control of humidifier or ventilation with Shelly  

In your smart home, Shelly keeps nursery humidity automatically in range. BLU H&T ZB and H&T Gen3 measure reliably and send data to the app. You define exactly when a device should react: 

  • If the air is too dry, Shelly Plug S Gen3 or 1PM Gen3 / Gen4 switches the humidifier on automatically. 
  • If humidity rises above your limit, a fan turns on to remove humid ambient air. All settings are flexible, can use schedules or scenes, and you can also control devices by voice with Alexa or Google Assistant. 

 

humidifier in the kids’ room; Shelly sensors keep indoor air in the ideal humidity range.

Ventilate and heat efficiently with smart-home tech 

Smart-home tech keeps the kids’-room climate both pleasant and efficient. BLU H&T ZB and H&T Gen3 record temperature and humidity precisely and send them to Smart Control.

There you can build automations that link heating, fans and window contacts intelligently: when humidity rises, a fan starts or a prompt to ventilate is sent; if temperature drops below your setpoint, the BLU TRV opens the radiator valve automatically. For electric heaters, use Plug S Gen3 or 1PM Gen3 / Gen4. You only heat when needed,saving energy and costs while improving indoor air quality.

Shelly Europe

FAQs:

How do I check humidity?

It’s easiest with the Shelly BLU H&T or H&T Gen3 sensors. They measure humidity and temperature; you see values in real time in the Shelly Smart Control App.

What humidity is optimal for children?

Ideally,40–60 %: mucous membranes stay moist, airways are protected and mold risk is low.

How can I control a dehumidifier by Shelly App?

Connect it via Plug S Gen3 or 1PM Gen3/Gen4 to Shelly Smart Control and switch it manually or automatically based on humidity.

How can I increase room humidity?

Use a humidifier. Integrated into the smart home, it can switch on automatically when humidity falls below your threshold.