A dry throat, a stuffy nose, or a restless night—these are the familiar consequences of overly dry air in the bedroom. A humidifier can offer relief, but the wrong choice can lead to new problems: a noisy device, leaks, or cumbersome maintenance. This guide will help you make an informed decision based on product features and specifications, ensuring you find a model that's perfect for your needs.
To avoid a poor purchase, it's essential to consider a few key parameters. These features determine how a humidifier will perform in your bedroom.
Humidifier Type: The most common types for home use are ultrasonic and evaporative.
Noise Level (dB): For a quiet humidifier in the bedroom, the noise level is a crucial factor. A rating below 30 decibels (dB) is generally considered very quiet, comparable to a whisper. Look for models that feature a dedicated sleep or night mode.
Capacity and Runtime: The water tank's capacity, measured in litres, determines how long the device can operate without a refill. A larger tank (e.g., 4-5 litres) can often run for several consecutive nights, which enhances convenience.
Automatic Features: An automatic humidifier with a built-in hygrostat continuously measures the humidity and adjusts its mist output to maintain a preset level. This prevents the room from becoming overly damp and ensures a stable, comfortable environment.
Additional Features:
Maintenance: A model with a top-fill design is easier to refill and clean than one that requires you to invert the tank.
Based on the criteria above, we have curated a selection of models with distinct features, suitable for a variety of bedroom needs.
Why We Chose It This ultrasonic model combines a very large capacity with smart features. Its 5-litre tank provides a runtime of up to 50 hours, making daily refills unnecessary. The built-in hygrostat automatically regulates humidity, while the sleep mode guarantees a noise level of just 25 dB.
Pros
Who It's For Users looking for a low-maintenance solution with a long runtime and automatic humidity control, ideal for larger bedrooms or a nursery.
View the CONOPU 5L Ultrasonic Humidifier
Why We Chose It The Blueair DreamWell H38i is an evaporative humidifier that uses what the manufacturer calls "InvisibleMist technology." This prevents the dispersal of white mineral dust, a major benefit for those in hard water areas. With a noise level starting at 20 dBA, it's one of the quietest models on the market. Control via the companion app adds extra convenience.
Pros
Who It's For Users in hard water areas, light sleepers who demand absolute silence, and anyone who prefers the convenience of smartphone app control.
View the Blueair DreamWell H38i Humidifier
Why We Chose It The Levoit Dual 150 is a compact and user-friendly ultrasonic humidifier. Its single-button control makes the device incredibly straightforward to use. Uniquely, essential oils can be added directly to the 3-litre water tank. With a noise level of 25 dB, this model is also excellent for nighttime use.
Pros
Who It's For For users seeking a simple, compact, and cost-effective solution for a smaller bedroom, with the added benefit of easy fragrance diffusion.
View the Levoit LUH-D302-WEU Dual 150 Humidifier
The models above were selected for their suitability in the bedroom. If your ideal model isn't listed, or if you're looking for a device with different specifications, such as a warming function, feel free to explore our wider selection.
View all models in the Humidifier & Heater category
A healthy and comfortable relative humidity level for a bedroom is typically between 40% and 60%. Air that is too dry can lead to dry skin and airways, while air that is too humid can promote mould growth. A humidifier with a hygrostat helps maintain this ideal balance.
No, this is not recommended. Most ultrasonic humidifiers are not designed for direct contact with oils, which can damage the plastic and the ultrasonic diaphragm. Only use essential oils if the device has a dedicated aroma tray (like the CONOPU and Blueair models) or if the manufacturer explicitly states that oil can be added directly to the water tank (as with the Levoit).
White dust is caused by minerals (like calcium) in hard tap water being dispersed into the air by an ultrasonic humidifier. To prevent this, you can use distilled or demineralised water. Alternatively, choose an evaporative humidifier, such as the Blueair DreamWell, which traps these minerals in its filter and therefore does not produce white dust.