Breville The Smart Mist' Humidifier

Breville 'The Smart Mist' Humidifier
Shortlist Compare
$249 HOT DEAL!
or 10 easy payments of $24.90 with

This section should always be read in conjunction with the Terms and Conditions for Product Care® Replacement.

Find in Store


Breville's the Smart Mist Humidifier can release warm or cool mist while giving you the option to infuse it with essential oils (not included) to create a fresh, relaxing environment in rooms 20 up to 40m2 in size.

Sensair System™

Live Comfort Control Automatically keeps the humidity in the "sweet spot" by setting the appropriate level of relative humidity depending on the room temperature

Water Atomising Transducer

A fine water mist is delivered through a more efficient and quieter technology than an evaporating device or steam vapouriser. It is also safe to use around babies

Cool & Warm Mist

Set the mist temperature to your liking or the season: - Cool mist for summer - Warm mist for winter

Water Purifier Cartridge

Removes impurities before emitting a clean mist of water into the surrounding air. It doesn't need to be replaced, just refreshed! Unlike humidifiers with wick filters.

7 Mist Levels & Pre-Set Modes

With the ability to fine-tune the amount of water mist or to use pre-set modes such as baby and health modes at the touch of a finger, this unit is totally versatile.

Large Tank Capacity

5L capacity removable water tank minimises the need for regular refilling.


Up to 12 hours running time depending on water levels & programs.

Evaporation Rate

260ml per hour.

Noise Level


All Product Details
Brand Breville
Product Type Humidifier
Model Number LAH400WHT
Manufacturers 24 Months
Breville The Smart Mist' Humidifier is rated 4.2 out of 5 by 43.
Rated 3 out of 5 by from Performs well but difficult to maintain I bought this a year ago and have been using it on a daily basis. It does what it says on the box but there are some drawbacks that stop me from giving this a higher rating. Pros: - Ability to set targeted humidity levels - Night mode / ability to turn the lighting off - Can produce enough mist to cover a large room Cons: - Water pools in the reservoir in which the water tank sits, so to fill the tank without spilling water everywhere, you need to take the whole unit to the sink - Cleaning is a pain because the unit has a lot of nooks and crannies that get wet and you need to clean We aren't spoiled for choice in Australia when it comes to humidifiers, so if you need one, this will do the job, but be aware that the maintenance is a chore (and you need to do it very regularly to prevent mould from growing).
Date published: 2020-11-29
Rated 5 out of 5 by from Great features Bought this originally for my plants but have ended up using it for my son to help his sinuses at night. Works well for both. Love being able to set the required humidity level with or without heat so it can be a set and forget. Only suggestion would be to check your existing humidity level in the room you require before purchasing(if possible) because if the humidity is not low the baby and health mode will steam up the room but this can be resolved by just using the manual setting mode instead.
Date published: 2020-06-10
Rated 5 out of 5 by from Works Great Very happy I bought it to keep the room humid for my plants and it keeps up great. I love the feature of setting your desired humidity percentage and it maintains it so it's not running all day.
Date published: 2020-04-30
Rated 5 out of 5 by from Excellent humidifier with multiple functions Easy to use and produces excellent humidity (changeable levels). It’s also great that you don’t need to replace the filter — better for the environment and your pocket! A bit messy when refilling but it’s only water so it’s easy to clean up. I had severe sinus problems and needed to increase the humidity in the house to help — this really did the job. We now have one in the bedroom and one in the open-plan living/dining room.
Date published: 2020-10-12
Rated 5 out of 5 by from Baby setting I bought for my newborn to help with congestion and it has worked great with the Baby setting and warm mist.
Date published: 2020-05-21
Rated 5 out of 5 by from Breville The Smart Mist Humidifier breathe easy The Breville humidifier is great especially helped with my congestion and also with breathing through the night. Also has helped with my husbands snoring. We bought 2 of these one for my daughter who has asthma and it has helped her breathe better. I would recommend the Breville The Smart Mist Humidifier to family and friends.
Date published: 2020-03-30
Rated 3 out of 5 by from Works well but awkward to refill the water tank The humidifier works well and is easy to operate but the water tank needs to be turned upside down to fill. It's heavy and awkward to replace when full and would be difficult for someone elderly or with dexterity issues.
Date published: 2020-09-29
Rated 3 out of 5 by from Functional but a bit clumsy Good functionality and does the job well, but quite clumsy and troublesome to empty, clean and refill. Water will go everywhere if not careful.
Date published: 2020-10-01
  • y_2021, m_6, d_17, h_18
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.17
  • cp_1, bvpage1
  • co_hasreviews, tv_4, tr_39
  • loc_en_NZ, sid_65983, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_harvey-norman-en_nz
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 12.67ms

We aim to dispatch orders within 2 days. Delivery costs are calculated based on your location and the size of your order. Furniture may take up to 8 weeks to deliver as most products are made specifically for your order. Some goods may take longer to deliver if a product is currently not in stock. A staff member will contact you where this occurs.

Easy returns

If you feel your product has failed a Consumer Guarantee (as defined by New Zealand Consumer Law) then don't worry you can easily return it to your local Harvey Norman store. We'll even pay for the postage if you live in an area where there is no store. Our returns policy covers any purchased item ( conditions apply).

Terms & Conditions
Special Price

Special pricing is valid until 30/06/2021.

Questions & Answers
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 11.14ms
  • bvseo-msg: HTTP status code of 404 was returned;
Product Care

Protect your purchase with Product Care®. Get a brand new replacement if your product suffers an eligible fault through our hassle free support process, plus enjoy a range of exclusive benefits like a product health check and free prints each year so you experience your new product even more.

Discover all of the benefits Product Care® brings you:


With Product Care® you can relax knowing your purchase is protected. After an assessment, if your product suffers a fault covered by the terms of your plan, we’ll arrange to have a brand new replacement delivered to your doorstep.


Our range of support options ensure you experience an easy and hassle free process when you need to talk to us about your Product Care® plan. Whether you are experiencing a fault, or wanting to redeem your entitlements, we will provide you with guidance and support every step of the way.


Having Product Care® with your purchase means you can enjoy a range of special benefits that are exclusive to you and will help you enjoy the experience of your new product even more.

Conditions apply. This section should always be read in conjunction with the Terms and Conditions for Product Care® Replacement.

Learn more about Product Care®.

Terms & Conditions

Special Price

Special pricing is valid until 30/06/2021.

Please confirm your selection

Store Picker

Travel Mode