Rainbow Mist Ultrasonic Cool Mist Humidifier Product image
Mist Humidifier next to sleeping child
Rainbow Mist Ultrasonic Cool Mist Humidifier Product and manual
Rainbow Mist Humidifier in the dark
Rainbow Mist Ultrasonic Cool Mist Humidifier Box Side

Rainbow Mist Ultrasonic Cool Mist Humidifier

The Ultrasonic Cool Mist Humidifier is the perfect tool to keep your home well-moisturised and comfortable.
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Welcome the vibrant energy of summer with the Medescan Rainbow Mist Ultrasonic Cool Mist Humidifier. Bid adieu to hot, dry conditions and embrace a cooler, more comfortable home environment. This superior humidifier is designed to alleviate dryness and maintain an oasis of comfort, ensuring your living space remains a cool refuge during the warm summer months.

HUMIDIFY - Whether you seek to banish dryness from your living space, alleviate congestion as the seasons change, or simply enhance your breathing experience, our humidifier is your trusted companion. Its user-friendly design guarantees up to 20 hours of uninterrupted operation, ensuring a refreshing atmosphere indoors.

AROMATHERAPY - Elevate your ambience with your preferred essential oils by adding them to the aroma oil tray in the humidifier. Experience the soothing scents of spring at your fingertips with a simple touch of a button.

  • Silent operation will ensure your loved ones get the best night sleep possible.
  • Seven Colour LED night light
  • Water tank capacity: 2.8 Litres
  • Continuous use time: Approximately 10 hours at a maximum flow rate or 20 hours at a low flow rate.
  • External dimensions: 200 (W) x 207 (D) x 291 (H) mm
  • Weight: 0.98kg

Download Instructions Manual

How To Use

Preparing the Humidifier:

  • Place the humidifier on a flat, stable surface near an electrical outlet.
  • Ensure the water tank is clean and free from any residue.

Filling the Water Tank:

  1. Remove the water tank from the humidifier base.
  2. Open the tank's lid or top cover.
  3. Fill the water tank with clean, cool, and preferably distilled water. Avoid using hot or boiling water.
  4. Be mindful not to overfill; there is often a maximum fill line indicated on the tank.

Optional Aromatherapy:

Add a few drops of your preferred essential oil to the tray. Do not directly add the oil to the water tank.

Assembling the Humidifier:

Place the filled water tank back onto the humidifier base, ensuring it is securely seated.

Powering On the Humidifier:

  1. Turn the dial to "on" to power up.
  2. You can adjust the flow level depending on the room size.

Powering Off and Refilling:

When the water level in the tank is low, the humidifier may automatically shut off, or you can turn it off manually.

To refill the tank, power off the humidifier, unplug it, and follow steps 2-4 again.

30-Day Money Back Guarantee

Our 30-Day Money-Back Guarantee is our way of ensuring your complete satisfaction with our products.

If for any reason you're not completely satisfied with your product, you can send it back within 30 days for a full refund of the product price. 

If you would like to apply for a refund, click here for more details. 


Why isn’t the humidifier blowing out much vapor?

Enjoy a steady stream of soothing vapor by checking the variable control knob is on the correct setting, and ensuring the oscillator is cleaned as well as the water tank is filled with fresh water.

The humidifier is leaking?

Avoid leaks by ensuring the filter cap is tight and the water tank is inserted correctly. If you are still experiencing leaks, please scan the QR code on the back of the box to watch our instructional video on how to set up your humidifier.

Why is the humidifier leaving lots of water around it or on my walls?

Eliminate water damage by adjusting the air flow setting to the lowest setting for a standard room. If you have a larger space, you can adjust the setting higher.

How often should I replace the water filter?

Keep your humidifier running smoothly and efficiently by replacing the water filter every 500 hours (every 3 months of 8 hours daily use). You can purchased one here.

Why does my humidifier have an odd smell?

Enjoy a fresh and clean scent in your home by using distilled water in your humidifier. Tap water can sometimes contain minerals that can cause a bad reaction with the humidifier, resulting in an odd smell.

Where do I pour the essential oils?

Add a touch of aromatherapy to your home by using the MEDESCAN special blend oil directly in the water tank. If you are using any other essential oil, please ensure you are using the tray located at the base of the Rainbow Mist.

How can I change the colour on my Rainbow Mist?

Enjoy a calming and relaxing atmosphere by changing the colour of your Rainbow Mist. Simply press the LED ON/OFF button to cycle through the 7 different colours, or hold the button down to select your favourite colour.

My Rainbow Mist looks like it is melting on the inside?

This is not because of heat, but actually if you have used essential oils that are not suited for this humidifier in the water instead of the tray in the back. If this has happened please contact customer support for replacing the bowl.

Shipping & Delivery

Shipping in Australia

  • FREE Shipping for orders over $50
  • $10 flat rate for orders under $50
  • We ship all orders via Australia Post Standard Parcel
  • Note: we do not ship internationally

Delivery Timeframe

  • Orders are processed within 1 business day. You will receive a tracking number to monitor your delivery.
  • Australian metropolitan areas 3-6 business days.
  • Everywhere else in Australia 3+ business days. 

View our shipping policy here.

Customer Reviews

Based on 17 reviews
Gee M. (Sydney, AU)
Love it

Love it, use it every night.
Only thing is itsbig and you carry thr whole thing to refil and gets dirty quickly. Have to do regular cleaning. Wish it came with compatible brush.

Jeff C. (Sydney, AU)
Great Product

Purchased to help my asthma and blocked sinuses, works really well and helps me sleep at night, highly recommend this humidifier. I use it just with water, no oils. The cool mist has a really strong flow and whisper quiet, makes no noise at all.

Magda L. (Sydney, AU)
powerful and effective

This has made such a huge difference when my heater is on in the winter. The air is perfectly humidified and I've stopped getting sore eyes and dry nose. Love that it also has a diffuser aspect where you can choose to use essential oils. The LED light is great as a night light and sometimes I just turn it on as I go to sleep without the humidifier running because of its lovely colours. Would recommend to everyone.

Naren (Sydney, AU)
Functional, aesthetically pleasing

The humidifier is quiet and does a good job of providing enough humidity for a 300 sq ft bedroom. My dad has COPD and raising the humidity of the room helps his breathing. He’s started to sleep well at night. The colors serve as a convenient night light.
My 10 year old niece absolutely loves the changing colors and wants one for her room.

Wiranya B. (Melbourne, AU)

Rainbow Mist Ultrasonic Cool Mist Humidifier

Leanne C. (Melbourne, AU)
Rainbow Mist Ultrasonic Cool Mist Humidifier

I love it, I no longer wake up with a dry throat.

Em M. (Sydney, AU)
Fantastic humidifier ideal for curing salami

Bought this as humidifier for salami curing fridge. Works perfect with humidity controller having manual on off switch and controller dial for high and low settings.

Liz (Melbourne, AU)
Medescan Rainbow Humidifier

Perfect, no need to use the oil pad though - that gives off no smell and just absorbs the oil. Use without the pads and it is perfect.

June M.B. (Sydney, AU)
Nosebleed sufferer

Easy to fill, nice clours and less nosebleeds from cold dry air.

Lucy (Melbourne, AU)
Great product

Works great. Great price. Fortunately the colours can be steady or off. I wish I could turn it a little lower but it is variable and can be nice and strong. The output is mist as described.