---
product_id: 222499130
title: "Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto"
brand: "blueair"
price: "R12474"
currency: ZAR
in_stock: true
reviews_count: 9
category: "Blueair"
url: https://www.desertcart.co.za/products/222499130-bedroom-air-purifier-air-cleaner-dust-pet-dander-smoke-mold
store_origin: ZA
region: South Africa
---

# 3W ultra-low energy use 23dB whisper-quiet operation 388 sqft cleans in 12.5 min Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto

**Brand:** blueair
**Price:** R12474
**Availability:** ✅ In Stock

## Summary

> 🌿 Breathe smarter, live cleaner — the silent guardian of your indoor air.

## Quick Answers

- **What is this?** Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto by blueair
- **How much does it cost?** R12474 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/222499130-bedroom-air-purifier-air-cleaner-dust-pet-dander-smoke-mold)

## Best For

- blueair enthusiasts

## Why This Product

- Trusted blueair brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Auto Mode:** One-touch particle sensor adjusts fan speed for optimal air quality—effortless breathing.
- • **Award-Winning Design:** Sleek Swedish style fits any modern space while delivering proven, independently tested performance.
- • **Allergen & Odor Defense:** Removes 99.99% of pollen, dust, smoke, pet dander, and traps household odors with carbon filter.
- • **HEPASilent™ Technology:** Combines mechanical + electrostatic filtration for 45% faster cleaning with 67% less noise.
- • **Ultra-Quiet & Energy Efficient:** Runs quieter than a whisper at 23dB and uses less power than an LED bulb (3W).

## Overview

The BLUEAIR Blue Pure 311 Auto is a compact, Energy Star-certified air purifier designed for medium rooms up to 388 sqft. Featuring patented HEPASilent™ dual filtration, it removes 99.97% of airborne particles down to 0.1 microns, including allergens, smoke, bacteria, and viruses. Its smart auto mode uses a particle sensor to adjust fan speed, ensuring optimal air quality with whisper-quiet operation at just 23 decibels. The washable pre-filter and carbon filter trap odors from pets, cooking, and smoke. Recognized as a top air purifier with multiple awards, it combines high performance, low energy consumption (3W), and sleek Scandinavian design to seamlessly elevate your home or office environment.

## Description

"Blue Pure 311 Auto air purifier quickly cleans 388sqft medium room in about 12.5 min or up to 1862sqft extra-large space in 60min, on high. Only Blueair air purifiers use HEPASilent™ technology, delivering maximum filtration with minimum noise. Combining mechanical filtration with electrostatic charging of particles produces clean air up to 45% faster with up to 67% less noise than traditional HEPA filtration alone. Delivers high performance with automated one-button control in a lightweight, compact package and includes a washable, pre-filter in Arctic Trail (Gray). It can also be customized in other Swedish-inspired pre-filter colors that are sold separately. Carbon filter traps light household odors from smoking, pets, cooking, and more. Award-winning, sleek, Swedish design compliments your aesthetic while working hard to clean your air so you can place where it will be most effective at capturing airborne particles & odors without worrying about it cramping your style. Independently evaluated for safety standards and third-party tested for performance as part of the AHAM Verifide® Program for air cleaners, this air purifier has a Clean Air Delivery Rate (CADR) of 250 for fine smoke particles, 244 for pollen particles, and 250 for dust particles.CLEAN AIR IN A MATTER OF MINUTES: Comparing CADR performance of Blueair models with mechanical and electrostatic filtration vs same models with only H13 HEPA mechanical filtration. When similar CADR was measured, Blueair models with mechanical and electrostatic filtration achieved less noise with less energy than same models with only H13 HEPA mechanical filtration. According to AHAM, air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time.REMOVES ODOR & PARTICLES DOWN TO 0.1 MICRON: Blueair models with HEPASilent's mechanical and electrostatic filtration produced higher CADR, lower noise, and had lower energy consumption vs. the same models with only mechanical filtration (H13 filter). Tested on PM2.5 (0.1 - 2.5 μm) up to 90min; Tested on Influenza A (H1N1) with a minimum reduction rate of 99.99% in 60min.REMOVES 99.99% OF COMMON ALLERGENS: Tested on pollen particles 5.048 - 11.14 μm on Blue Auto, DustMagnet™ and Protect.MOST AWARDED AIR PURIFIER BRAND IN THE US: Based on survey of over 50 awards, accolades, and recommendations issued by independent consumer associations, media publications, and industry competitions from January 1, 2022, through August 16th, 2022, for products sold in the US by top 10 air purifier brands according to NPD Group Retail Tracking Service, Small Appliances, U.S. sales dollars June 2022 YTD.BACTERIA & MOLD REMOVAL: Tested on E.coli with mininum reduction rate of 99.9% in 60min. Tested on A.niger with minimum reduction rate in 99.9% in 60min."

Review: Quiet and Efficient - This air purifier is quiet and efficient. It runs throughout the day mostly silent, cleans our air well, and has a beautiful design. I am impressed by how quiet this air purifier is! I've had many air purifiers over the years and most of them were loud, either with fans or electrical humming. The blueair purifier runs all day completely silent. This is one of the top reasons I wanted it. The only time it becomes louder is if it detects more pollutants in the air, which kicks the fan up higher. Even at it's highest setting it's not loud. I would say it's less quiet than a box fan. I LOVE how quiet it is. I have sensitive lungs and I suffer when the air isn't clean. The pollen in the air has been brutal, so I wanted an air purifier that could work in addition to the other ones in our home. We have a little town home and I use this one in our living room. I have placed it at the corner of the living room by the dining room and kitchen. I accidentally burnt a meal while cooking and the air purifier automatically kicked up to the highest level until the air was clean. That alone is impressive. Recently, all of our windows were open and the air purifier fan kicked up to it's medium level fan, then it's high level. My kids and I were wondering if the fan had malfunctioned, none of us had done anything to cause it to react. I went to the window and realized that it was hazy and smoky outside. We immediately shut all of the windows. The air purifier stayed on until the air in our house was clean again. Then it went back into low-level, silent mode. I absolutely LOVE the auto-detect feature. It's small enough to be out of the way, but big enough to do it's job. I love the beautiful design. It's about the height of a box fan. I love that it's round and tall. We have the original prefilter that it came with but I'd like to purchase more. I'm excited to try out another color, but I also really love the grey. The only downside is the prefilter. As much as I love it, our cat loves it more. She loves to launch herself full speed across the room and do a running leap at the air filer, grab at it with her claws and fling herself around it like it's a toy just for her. She ferociously rips and pulls at it like it's a beautiful scratching post. We've tried putting new scratching pads and all around it to deter her, but she loves the blueair more. I have removed the prefilter in hopes of detering her, so that she'll leave it alone. She has lost all interest in it with the prefilter removed. I'm bummed because I love the look of it WITH the filter on. It is so hard to take the filter off and put it back on. I kind of wish it was able to simply velcro on instead of having to slide it on. It reminds me of trying on prepregnancy pants after I had my kids. So difficult to shimmy into! Despite this one problem, I love this air purifier and will definitely be purchasing another in the future for our downstairs bedroom!
Review: Form and function! - This is the second BlueAir air purifier I've purchased, and I absolutely love them. I use this one in my living/dining room, and I have it normally set on auto. It is whisper quiet when the air is clean, and still fairly quiet on the next level, only getting loud but still not unbearable on the highest setting when it is cleaning the air. I have a small kitchen so anytime we cook anything the smell inevitably fills the dining and living room. This air purifier then immediately kicks into high gear and within an hour cleans the air. Very efficient in that regard. It also does an excellent job of reducing dust, as much less dust accumulates on my furniture now. While I can say for a fact if that will help with allergy relief since fortunately I don't suffer from it, I assume less dust helps. While the air purifier is very light weight, it still feels very durable. It also looks great anywhere in the room, seamlessly blending into surrounding furniture unlike other air purifiers, and isn't too big or too small so can really fit anywhere. I'll definitely be purchasing more purifiers from this company for other rooms.

## Features

- AUTO ADJUSTS SO YOU CAN REST EASY: One touch auto mode uses a particle sensor to monitor pollutant levels and adjusts fan to ensure optimal air quality; LED indicator displays air quality status as excellent (blue), moderate (orange) or polluted (red).Input Power, Frequency : 100-240V 50/60Hz
- CLEAN AIR IN MINUTES: Blueair’s HEPASilent dual filtration delivers up to 45% faster cleaning and up to 67% less noise than traditional HEPA filtration alone; Quickly cleans 388sqft medium room in about 12.5 min or up to 1862qft XL space in 60min, on high
- ONE OF THE QUIETEST AIR PURIFIERS: Quieter (23 dB) than whisper on low; ENERGY STAR rated - uses less energy (3W) than an LED lightbulb on low so it’s kind to your wallet and the planet
- ASTHMA & ALLERGY: Removes 99.99% of pollen, helping reduce allergens and pollutants that trigger allergy and asthma symptoms
- REMOVES ODOR & PARTICLES DOWN TO 0.1 MICRON: Ideal for smoke & smog during wildfire season; Removes 99.97% of airborne particles like smoke, dust, viruses and pet dander, while the carbon filter traps light household odors from smoking, pets and cooking
- MOST AWARDED AIR PURIFIER BRAND IN THE US: Blue Pure 311 Auto has won Wirecutter Pick – The Best Air Purifier 2021, 2020, 2019; The Spruce Recommends – Top Pick
- INDEPENDENTLY TESTED FOR PERFORMANCE & SAFETY, ZERO OZONE: AHAM Verifide for CADR; Ozone Safety Standards Certified by CARB; Zero Ozone Verified (<5 ppb) by Intertek Sustainability Program; Trusted Education Partner of British Health Professional Academy
- GENUINE FILTERS FOR OPTIMAL PERFORMANCE: Replace your filter every 6 months to ensure proper functionality & only use genuine Blueair filters; Shop 311 Auto replacement filter: B08F13YBG2; Upgrade to SmokeBlock filter for enhanced removal: B0B45D9TDS

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08F13L1CH |
| Assembly required | No |
| Batteries required | No |
| Best Sellers Rank | #323,096 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #389 in HEPA Filter Air Purifiers |
| Brand | BLUEAIR |
| Care instructions | Place purifier upright on a flat surface |
| Color | White |
| Contaminant Filtration Capability | True |
| Controller Type | Button Control |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,380) |
| Filter Class | HEPA + Carbon |
| Floor Area | 388 Square Feet |
| Global Trade Identification Number | 00689122013695 |
| Included Components | Blue Pure 311 Auto Purifier, Washable Pre-filter in Arctic Trail |
| Item Weight | 6.8 pounds |
| Item model number | 3431101000 |
| Manufacturer | Blueair |
| Noise Level | 23 Decibels |
| Number of pieces | 1 |
| Particle Retention Size | 0.1 Micron |
| Product Dimensions | 10.2"D x 10.2"W x 20.5"H |
| Special Feature | Manual |
| Specification Met | Energy Star Certified |
| UPC | 689122013695 689122019635 |
| Wattage | 3 watts |

## Product Details

- **Brand:** BLUEAIR
- **Color:** White
- **Item Weight:** 6.8 Pounds
- **Power Source:** Corded Electric
- **Product Dimensions:** 10.2"D x 10.2"W x 20.5"H

## Images

![Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto - Image 1](https://m.media-amazon.com/images/I/71fquq6Ii2L.jpg)

## Questions & Answers

**Q: How long does a filter last? I bought mine 3 weeks ago and the red light already came on signaling it needs to be replaced.**
A: Which red light?  The red light for filter replacement is on top and shouldn't come for 6 months or more depending on how long and high the fan setting. Page 11 of manual. The red led on front side is red if polluted air is detected, then yellow then blue when air is clear. Page 10.

**Q: How much do the filters cost and where do I get them**
A: As of 7/13/2022, Amazon sells replacement filters. Original is $21.

**Q: Do you have to use auto mode?  To reduce noise we may want to use low setting at certain times, is that do-able?**
A: You do not have to use these machines in Auto Mode. You can set to a manual speed if you would prefer to have controls over the fan speeds.

**Q: Consumer reports rates the 411 Auto very poorly for filtration at any speed.  Does the manufacturer have a response to this?**
A: I subscribe to consumer reports, but I am not always a fan of their review methodology. I think the problem here is that they compare all sizes of purifiers together, when the smaller units should be compared with other smaller units. Of course, a larger unit with higher CFM air flow and larger filter area will perform better than a smaller unit. Other review sites gave this purifier good ratings for its size. Some recommend just buying the larger unit, which is rated highly by Consumer Reports and running on a lower speed setting.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quiet and Efficient
*by M***A on June 16, 2024*

This air purifier is quiet and efficient. It runs throughout the day mostly silent, cleans our air well, and has a beautiful design. I am impressed by how quiet this air purifier is! I've had many air purifiers over the years and most of them were loud, either with fans or electrical humming. The blueair purifier runs all day completely silent. This is one of the top reasons I wanted it. The only time it becomes louder is if it detects more pollutants in the air, which kicks the fan up higher. Even at it's highest setting it's not loud. I would say it's less quiet than a box fan. I LOVE how quiet it is. I have sensitive lungs and I suffer when the air isn't clean. The pollen in the air has been brutal, so I wanted an air purifier that could work in addition to the other ones in our home. We have a little town home and I use this one in our living room. I have placed it at the corner of the living room by the dining room and kitchen. I accidentally burnt a meal while cooking and the air purifier automatically kicked up to the highest level until the air was clean. That alone is impressive. Recently, all of our windows were open and the air purifier fan kicked up to it's medium level fan, then it's high level. My kids and I were wondering if the fan had malfunctioned, none of us had done anything to cause it to react. I went to the window and realized that it was hazy and smoky outside. We immediately shut all of the windows. The air purifier stayed on until the air in our house was clean again. Then it went back into low-level, silent mode. I absolutely LOVE the auto-detect feature. It's small enough to be out of the way, but big enough to do it's job. I love the beautiful design. It's about the height of a box fan. I love that it's round and tall. We have the original prefilter that it came with but I'd like to purchase more. I'm excited to try out another color, but I also really love the grey. The only downside is the prefilter. As much as I love it, our cat loves it more. She loves to launch herself full speed across the room and do a running leap at the air filer, grab at it with her claws and fling herself around it like it's a toy just for her. She ferociously rips and pulls at it like it's a beautiful scratching post. We've tried putting new scratching pads and all around it to deter her, but she loves the blueair more. I have removed the prefilter in hopes of detering her, so that she'll leave it alone. She has lost all interest in it with the prefilter removed. I'm bummed because I love the look of it WITH the filter on. It is so hard to take the filter off and put it back on. I kind of wish it was able to simply velcro on instead of having to slide it on. It reminds me of trying on prepregnancy pants after I had my kids. So difficult to shimmy into! Despite this one problem, I love this air purifier and will definitely be purchasing another in the future for our downstairs bedroom!

### ⭐⭐⭐⭐⭐ Form and function!
*by S***O on May 1, 2024*

This is the second BlueAir air purifier I've purchased, and I absolutely love them. I use this one in my living/dining room, and I have it normally set on auto. It is whisper quiet when the air is clean, and still fairly quiet on the next level, only getting loud but still not unbearable on the highest setting when it is cleaning the air. I have a small kitchen so anytime we cook anything the smell inevitably fills the dining and living room. This air purifier then immediately kicks into high gear and within an hour cleans the air. Very efficient in that regard. It also does an excellent job of reducing dust, as much less dust accumulates on my furniture now. While I can say for a fact if that will help with allergy relief since fortunately I don't suffer from it, I assume less dust helps. While the air purifier is very light weight, it still feels very durable. It also looks great anywhere in the room, seamlessly blending into surrounding furniture unlike other air purifiers, and isn't too big or too small so can really fit anywhere. I'll definitely be purchasing more purifiers from this company for other rooms.

### ⭐⭐⭐⭐⭐ Australian Shepherd House Approved!
*by D***. on July 7, 2025*

This is an awesome air filter. It runs 24/7/365 in my house. I have 2 Australian Shepherds - need I say more? I have it on the lower setting during the day (mainly because it is quiet) but turn it up to high at night. It lives in my living room/kitchen. Because it has air intake on all 4 sides I will scoot it to the middle of the room at night to capture particles from all directions. Make sure to wash the outer filter cover once a week. I purchased extras so I could change it out without downtime. Buy the name brand extras - they fit best. It is always full of hair even with vacuuming every other day. The main filter is easy to change which I do at least every 6 months. They are not cheap but they work! This has lived up to my expectations. I have had it for 4 years.

## Frequently Bought Together

- BLUEAIR Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto
- BLUEAIR Blue Pure 311 Auto Genuine Replacement Filter, Particle and Activated Carbon, fits Blue Pure 311 Auto Air Purifier

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-01*