Does it have a true hepa filter

No it doesn’t. It’s less dense than hepa, which they claim is as good.

Do you wash pre filter on particular wash cycle..?

I wash mine once a month on a normal 40 degree colour wash and it comes out great. Ive had the purifier (411) for a couple of years and no wear in cover. I dont tumble dry though just air dry.

Is there any other colours available? As I can only see one option of Diva blue

Yes, there are two other options available: saffron red and dark shadow.

If i turn it off at the mains while its on, and switch the mains back on, will it automatically turn back on, or do i have to press the button again?

You can turn it on and off with the mains socket switch. The purifier has a knob you turn for 3 positions, it clicks and stays there even if you turn off at the mains.

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Blueair Blue Pure 511 Air Purifier With HEPASilent Combination Filter For Rooms Up To 38m² Removes 99.97% Particles Pollen, Dust, Mould, Bacteria, Viruses

Product ID: 551214474

Details

Brand
BLUEAIR
Colour
Arctic Trail
Item weight
1.9 Kilograms
Power source
Corded
Product dimensions
20D x 20W x

⚡Cleans 38m² in 30 mins

🔇Ultra-quiet 24 dB operation

🦠99.97% particle removal

S$226

Duties & taxes included

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Description

🌬️ Breathe Brilliance: Clean Air, Quietly Delivered

HEPA SILENT POWER - Advanced filtration removes 99.97% of microscopic particles including viruses and allergens.
RAPID ROOM REFRESH - Purifies up to 38m² in just 30 minutes, delivering fresh air faster than ever.
WHISPER QUIET COMFORT - Operates at a barely-there 24 dB, perfect for undisturbed sleep or focused work.
AWARD WINNING AIR QUALITY - UK’s most awarded purifier brand, trusted by experts and consumers alike.
EFFORTLESS CONTROL STYLE - Minimalist two-button design with 3 fan speeds, blending Swedish elegance with ease.

The Blueair Blue Pure 511 Air Purifier combines award-winning HEPASilent technology with ultra-quiet operation to remove 99.97% of airborne particles as small as 0.1 microns. Designed for rooms up to 38m², it refreshes your space swiftly and silently, making it ideal for bedrooms and workspaces. Its sleek, user-friendly design ensures effortless control while maintaining a stylish presence in any modern home.

Specifications

ASIN	B08KPHMTJY
Best Sellers Rank	11,523 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 11 in Air Purifiers
Brand Name	BLUEAIR
Colour	Arctic Trail
Contaminant Filtration Capability	99.97% of particles
Control Method	Touch
Controller Type	Button Control
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (428)
Filter Class	HEPA
Filter Type	HEPA
Floor Area	38 Square Meters
Item Dimensions D x W x H	20D x 20W x 34H centimetres
Item Type Name	Air Purifier
Item Weight	1.9 Kilograms
Manufacturer	Blueair
Model Number	110344
Noise Level	49 Decibels
Number of Packs	1
Part Number	110344
Particle Retention Size	0.1 Micron
Power Source	Corded Electric
Special Features	HEPASilent technology for ultra-quiet, high-efficiency particle removal
Specification Met	Certified HEPA
UPC	689122024592
Unit Count	1.0 count

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