Wilfa Haze smart humidifier HU-400BC for rooms up to 70 m²

Name: Wilfa Haze smart humidifier HU-400BC for rooms up to 70 m²
SKU: WILFA-HAZE-601228
Price: 83.99 GBP
Availability: InStock

£83.99~~£138.99~~ at WilfaSave £55

The price at Wilfa was checked on 28 October 2026.

Colour: Black

Black

In stock

Visa
Mastercard
Apple Pay
Klarna

Goes well together

Wilfa Haze smart humidifier HU-400BC for rooms up to 70 m², £83.99
+ Shark NeverChange5 Compact Pro air purifier, £106.99

Total £190.98

£83.99

Wilfa Haze smart humidifier HU-400BC for rooms up to 70 m²

Shipping from £3.99 · Choose your delivery option at checkout.

14-day right to cancel
Secure payment
Delivery nationwide
30-day right to reject

You pay on a secure payment page. We never see your card details.

For large roomsUp to 70 m² according to Wilfa.
Holds the levelSet the humidity – it does the rest.
Cool or warmChoose the mist for the room.
Control from your phoneApp via Wi-Fi and a clear display.

Humidity throughout the living room

At up to 450 ml/h Haze quickly raises the humidity in large rooms. Aim the nozzle into the room – or at your thirstiest plant.

Set it and forget it

Choose the humidity you want and Haze increases or decreases the mist itself. In the app you follow the level and set the timer, and night mode switches off the display.

Fill it from the top

Pour water straight in from the top, or lift out the inner container and fill it under the tap. The unit switches off when the water runs out.

Reviews

★★★★★4.2 out of 5 · 475 ratings on Clas Ohlson

★★★★★
I have high ceilings and an open-plan layout, so lots of cubic metres. I had about 26 % humidity indoors. Put it on high and hey presto, in less than a day it was over 40 %. This little one really is worth recommending! Delivers far beyond expectations. Quiet, and quite good-looking for an otherwise “ugly gadget”.
Read moreShow less
Johan · 13 January 2025
★★★★★
It was easy to install the app and set the values I want. The humidity in the flat of about 70 m² rose noticeably. The unit stands centrally and I have a hygrometer in the bedroom. It showed 10 % higher humidity than before after a day. I'm very happy with my purchase.
Kerstin · 26 October 2025
★★★★★
Works excellently. I set it to “constant humidity” at 45 % and it holds that without any problem in the whole flat (60 m²). A full tank lasts a day or two before it's empty.
H · 18 April 2025
★★★★★
Very happy. Very good mist distributor. Keeps the house nicely at 40–45 % humidity. I fill 4 l morning and evening. It runs round the clock. Never any spills or damp where it stands. Recommended.
Terje · 6 January 2026
★★★★★
The humidifier works really well. Starts the mist in a flash, quiet and good-looking. For refilling, the inner container lifts out. Recommended.
Anders · 30 December 2024
★★★★★
Very good humidifier! Well thought-out. Quiet and easy to refill. If you must, there's Bluetooth and other unnecessary stuff, but we just want an easy-care machine that does a good job. Nothing negative about this product. Highly recommended.
Mats · 2 February 2026
★★★★★
Small and effective, holds a constant humidity of 37 % in a 70 m² room. We had 26 % humidity before we set it up.
Sverre F · 25 December 2023

Product FAQ

Is warm mist safe with children at home?

In warm mist mode the water is heated. Place the unit steadily where children and pets can't reach it, don't touch the nozzle while it's running and let it cool before moving or cleaning it. With children in the room, cool mode is the safe choice.

Will there be white dust?

There can be. Ultrasonic humidifiers spread minerals from the water, and with hard tap water a fine white dust can settle around the unit. Aim the mist away from furniture and electronics and clean the tank regularly.

What humidity should I aim for?

Indoors, 40–60 % relative humidity usually feels comfortable. With the radiators on in winter, indoor air can drop to 20–30 %. Set the level you want and let the humidity sensor do the work – above 60 % is rarely needed and can cause condensation on cold windows.

Are scented oils included?

No. Scented oils aren't sold here. Only use the aroma compartment or pad as the manual describes – never pour oil into the water tank unless the manufacturer explicitly says you can.

How do I clean it?

Empty the water and let the parts dry when you're not using it. Clean the tank and filter about once a week as the manual describes – with water and a soft brush, and descale when needed. Never leave old water standing for days.

How fast will it arrive, and can I change my mind?

Delivery options and times are on our Delivery page. You have a 14-day right of withdrawal and a 3-year right to complain – see the Returns page.

Description

A powerful ultrasonic humidifier for the living room or an open-plan space. Haze emits up to 450 ml/h and is recommended for rooms up to 70 m² according to Wilfa. The tank holds 4 litres and is filled from the top or by lifting out the inner container.

Set the humidity you want on the touch panel or in the app via Wi-Fi, and Haze regulates the mist itself. The LED display shows the settings and the room's humidity. There are five speeds, a night mode that switches off the display and a timer of up to 12 hours.

You choose cool or warm mist and direct it with the adjustable nozzle. A cleanable ceramic filter softens the water, and the unit switches off when the tank is empty or lifted off. There's an aroma compartment for essential oils.

Features

Up to 450 ml/h, rooms up to 70 m² according to Wilfa
Automatic humidity control to the chosen level
App via Wi-Fi, touch panel and LED display
Cool or warm mist, adjustable nozzle
4-litre tank, filled from the top; night mode and 1–12 h timer

Specifications

Brand and model	Wilfa Haze HU-400BC (601228)
Technology	Ultrasonic, cool or warm mist
Colour	Black
Water tank	4 l, filled from the top
Humidification	Up to 450 ml/h
Room size	Up to 70 m² (according to Wilfa)
Run time per fill	Up to 9 hours on the highest level
Humidity sensor and auto mode	Yes, automatic humidity control
Modes	5 speeds, night mode, 1–12 h timer
App and connectivity	App via Wi-Fi 2.4 GHz, Bluetooth
Power	110 W
Filter	Ceramic filter, cleaned and reused
Safety	Switches off when the tank is empty or lifted off

Delivery and returns

You choose your delivery option at checkout:

Standard delivery (tracked), 3–5 working days – £3.99
Express delivery, 1–2 working days – £6.99

You have a 14-day right to cancel from the day you receive your item. Contact us within 14 days if you want to cancel your order.

Warranty and complaints

Your goods are covered by the Consumer Rights Act 2015: they must be of satisfactory quality, fit for purpose and as described. If something is wrong with your item, contact our customer service and we will help you.

Contact customer service