Blue Signature™ Small

Name: Blue Signature™ Small Midnight
Brand: Blueair
Price: 149.0 GBP
Availability: OutOfStock
Rating: 4.5 (181 reviews)

Air Purifier, Small Rooms

4.5

Rated 4.5 out of 5 stars

181 Reviews

Size: Small

Color: Midnight

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Powerful filtration. Advanced odour removal.

Rapidly cleans 23 m² in 12.5 minutes & up to 10 m² in 1 hour
Smart VOC sensor detects what you can’t see, so you can breathe better
7 stages of filtration removes 99.97%² of airborne particles
10x³ more odor removal with OdorFence Technology
Dynamic display that auto-adapts to enhance your air
Double⁶ the filter lifetime thanks to our patent-pending filter design
Smart features in the highly rated, newly improved Blueair app
Customize with exclusive accessories
Motion activated touchscreen display
Accurate filter lifetime tracking

Customise with exclusive accessories
Motion activated touchscreen display
Double* the filter lifetime

Additional Features

Wi-Fi connectivity for remote control Yes
On/ off timer Yes, via Blueair App
Speed control options 1 - 2 - 3 - 4 - Auto - Night - Eco
Integrated air sensors Yes

Shipping & Warranty

Ship next day free
30 day home trial
Authenticity guaranteed

Why choose Blue Signature™?

Doubles as a table-top & much more

Make it yours. Choose from curated pre-filter colors and accessories that elevate your space.
Dynamically displays your air quality

See your air quality at a glance. The motion-activated display responds to your preferences in real time.

7 stages of superior filtration and smart VOC sensing for 10x³ more odour removal

Smart VOC sensing continuously detects airborne gases and chemical pollutants in real time. HEPASilent filtration technology captures at least 99.97% of tiny airborne pollutants down to 0.1 microns, such as fine particles, dust mite allergens, pollen, bacteria, virus and mould allergens.⁴

OdourFence captures common odour gases and breaks them down. It’s deep, effortless clean air you can feel, and smell, every day.

“I tested it with kitchen odors while cooking, and within about 20 minutes of running the air purifier, I could smell little to nothing. I find that astonishing. I've used other air purifiers before, but this one does the trick.”

“Better air helps me sleep, recover, and show up at my best–whether I'm stepping onto the court or spending time with my family. That's why I'm excited to partner with Blueair.”

Josh Hart, NBA NY Knicks Guard & Blueair Ambassador

Smart control in the highly rated & newly upgraded Blueair app

Effortlessly take control of your air

Select a fan speed, let auto or night mode take over & keep settings secure with display lock.
Customise schedules to fit your lifestyle

Set your preferred times for enhanced air purification, so you can wake up to fresh air, keep your home clean during peak hours, and save energy when you're away.
Smart filter lifetime tracking

Tracks the filter lifetime based on pollutant levels and alerts you when it’s time to replace your filter.

Feel the difference with Blue Signature™

95%

felt it contributed to a
healthier living environment⁵

89%

prefer it over any
other air purifier⁵

Feel the difference with Blue Signature™

Proud to be a Certified B Corp

As a B Corp, we’re part of a global community of businesses that meet high standards of social and environmental impact.

Ship free next day
30 day home trial
Authenticity guaranteed

Technical Specifications

Filter Type

Particle & Carbon
Dimensions(HxWxD)

34.8cm x 23.88cm x 23.88cm
Product Weight

2.6 kg
Energy Consumption

20 W Max
Sound level

23-55 dB
Air outlet

Side
Recommended room size

46 m² (4.8 ACH)
Air changes per hour (ACH)

4.8
Clean air delivery rate (CADR)

Pollen 304 m³/h
Dust 283 m³/h
Smoke 271 m³/h
Recommended filter change

9-12 months
Number of filters

1
Speed control options

1 - 2 - 3 - 4 - Auto - Night - Eco

FAQ

How often do I need to change the filter?

You filter will last up to 1 year thanks to our unique patent-pending design & proprietary RealTrack algorithm that accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels.

When it's time to replace the filter, the filter replacement LED on the interface will turn red to remind you. Alternatively, connect to the Blueair app to receive an alert and easily re-order at the touch of a button.

What are the noise levels?

What room size is best?

4.5

Rated 4.5 out of 5 stars

Based on 181 reviews

Total 5 star reviews: 142 Total 4 star reviews: 12 Total 3 star reviews: 14 Total 2 star reviews: 4 Total 1 star reviews: 9

85%would recommend these products

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181 reviews

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RS
Rasha S.
Verified Buyer
3 days ago
Reviewing
Blue Signature™ Medium Midnight
Rated 3 out of 5 stars
Good product
I found it easy to set up and connect to the app. I find it a bit "noisier" than the smaller blueair purifiers I have, which makes sense since it's a larger one, but maybe it will take time to get used to the low sound that reminds me of when a phone line is off the hook and it's beeping incessantly.
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BU
Blueair UK
4 minutes ago
Thank you for sharing your feedback. I’m glad to hear the setup and app connection were easy for you. I’m sorry, however, that the sound from your Blue Signature medium feels distracting compared to your smaller Blueair purifiers. We understand how important it is for the unit to be both effective and comfortable to use. Our support team will contact you via email to assist further and work toward resolving this noise issue.
LH
Loren H.
Verified Buyer
3 days ago
Reviewing
Blue Signature™ Small Nordic Fog
Rated 5 out of 5 stars
An improved control panel
We got this Small Nordic Fog unit for a bedroom, and it seems to be working just fine. I was a bit surprised when the controls lit up every time I (or our dog) neared the unit, unlike the 311i unit we have in our great room.
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GB
Gavan B.
Verified Buyer
1 week ago
Reviewing
Blue Signature™ Medium Midnight
Rated 4 out of 5 stars
Useful addition to the smart home
It has definitely helped with sleep, clearing out the fallout from an ensuite bathroom, and when in tandem with a dehumidifier makes the room easier in this wet heat. It's certainly helped my blocked nose.
It's very educational about the make up of air and how to improve its quality, too.
It sits nicely on a bedroom cabinet and is very quiet in sleep mode, but the app can fire it up remotely if you want a quick burst before bedtime.
Recommended.
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HK
HOWARD K.
Verified Buyer
1 week ago
Reviewing
Blue Signature™ Small Nordic Fog
Rated 5 out of 5 stars
Awesome Purifier
Of all the air purifiers I have tried Blueair is the very BEST. They operate exactly as described, super quite, except when they detect pollutants and then go into overdrive, which is exactly the way it should be. The automatic mode is perfect, set it and forget it. I have 3 Blue Signatures small, medium and large. I have definetly noticed the difference in the house since having them. Easy to setup and pair with my Wi-Fi.
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PB
paulene B.
Verified Buyer
1 week ago
Reviewing
Blue Signature™ Medium Nordic Fog
Rated 5 out of 5 stars
Brilliant Product
Due to severe asthma I breathe with difficulty and am affected by dust, pollution, perfumes/odours, the weather, anything really. This machine has improved the atmosphere in our house enormously. I have actually managed a few good nights sleep since using it.
During the heatwave using the fan on full has helped to keep the house comfortable.
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¹ Based on high-speed CADR by volume vs. similar competitive models

² Tested on PM2.5 up to 90 minutes.

³ Tested on Acetaldehyde gas vs. similar leading competitor filter

⁴ Tested on bacteria (S. aureus, K. pneumoniae, P. aeruginosa), virus (MS2) and mold allergen (A.niger) with a minimum reduction rate of 99.9% in 60min. Blueair does not claim to prevent transmission of airborne illnesses. Not tested on SARS-COV-2.

⁵ Based on consumer testing of 38 users over the course of 4 weeks

⁶ Compared to Blue Pure 211+

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