Why choose Blue Signature™?
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Doubles as a table-top & much more
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Dynamically displays your air quality
"The Blueair Blue Signature finally gives design-conscious homeowners an air purifier they won't want to hide."
YANKO DESIGN
“I tested it with kitchen odours 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.”
Jake
Smart control in the highly rated & newly upgraded Blueair app
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Effortlessly take control of your air
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Customise schedules to fit your lifestyle
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Smart filter lifetime tracking
Feel the difference with Blue Signature™
95%
felt it contributed to a
healthier living environment⁵
89%
prefer it over any
other air purifier⁵
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Ship next day free
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30 day home trial
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Authenticity guaranteed
Technical Specifications
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Dimensions(HxWxD)
44cm x 40cm x 40cm
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Product Weight
6 kg
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Energy Consumption
3.5-42 W
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Sound level
23-55 dB
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Air outlet
Side
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Recommended room size
65 m²
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Air changes per hour (ACH)
4.8
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Clean air delivery rate (CADR)
Pollen 450 cfm
Dust 434 cfm
Smoke 455 cfm
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Number of filters
1
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Speed control options
1 - 2 - 3 - 4 - Auto - Night
FAQ
Total 5 star reviews: 108 Total 4 star reviews: 7 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 2
93%would recommend these products
124 reviews
- SSeanVerified Buyer1 week agoReviewingBlue Signature™ Large MidnightRated 5 out of 5 starsThis air purifier saved my family's home from a potential house fire!
In early Feb 2026, while we were sleeping at 2am our Blue Signature purifier in our bedroom went to the highest setting while on auto mode. This woke my husband up, so I checked my app to see what the air quality was and it was very poor. As I started to doze back to sleep, I started to smell smoke. When I opened my door it immediately smelled like burning wood. I went downstairs to find smoke coming out of our gas furnace. The air purifier detected the smoke before our fire alarms would have went off. When the fire department arrived they later told us another 30 minutes to an hour later the walls could have caught fire and potentially burned down our house. We later moved the air purifier into a main space and it helped remove the smell of smoke that lingered in our home over the next few days.
We have had this air purifier for several months and it does a great job. My family does a lot of home cooking and it really helps remove the smell of food odor that lingers in our bedroom. The purifier is also great at removing dust from the air, which was another reason for why we purchased it. I have and will continue recommend this purifier to others!!
BUBlueair UK1 week agoThank you so much for sharing this incredible experience. We are truly grateful that your Blue Signature Midnight was able to alert you to the smoke so quickly. Knowing it helped protect your home and family means everything to us.
We are also glad it continued supporting you by clearing lingering smoke and everyday cooking odors. Thank you for your trust and recommendation. Stories like yours remind us why we do what we do.
- SBSean B.Verified Buyer3 months agoReviewingBlue Signature™ Large Nordic FogRated 5 out of 5 starsUnit is whisper-quiet
As you can see in the video, the unit is whisper-quiet at night. It has replaced an Austin Air Bedroom Machine that was much, much louder even on the Low setting. I can now sleep better, thanks to BlueAir's quiet but effective filtration. I also like the ability to auto-schedule Night mode on/off through the app. (E.g. On daily at 8pm and Off, turning to Auto, at 8am.)
- AAven4 months agoReviewingBlue Signature™ Large Nordic FogRated 5 out of 5 starsBest air purifier
This is my 6th Blueair and by far the best. Highly recommend. Impressive!
- Hhaleyc134_24056 months agoReviewingBlue Signature™ Large Nordic FogRated 5 out of 5 starsSleek, stylish, effective
Loving my new BlueAir signature air purifier so far! It looks so sleek, doubles as a light side table, and is almost silent on the lowest fan setting. I love that the screen can be dimmed or locked so it appears to just be a table, and the app control and air quality info/scheduling is great too. I’ve mostly used it in eco mode for energy efficiency and really like it so far- the easily washable pre-filter is really convenient. I’m not sure how much replacement filters cost yet, but the app keeps track of the filter use and estimates lifetime for you. The cylindrical design isn’t the most space efficient, but since it can fit in with a room pretty well, it’s easier to have it centrally located to optimize air filtration- if you have an outlet nearby.
- MRMichelle R.6 months agoReviewingBlue Signature™ Large Nordic FogRated 5 out of 5 starsHelps me breathe better
We love this air purifier. It’s perfect for my someone with allergies & 2 dogs. It’s also stylish & fits in with our living rooms design!