It’s great to have four operating modes so it can be set depending on what’s going on inside your home or with your allergies. So, for example, if you're a hayfever sufferer you might choose a lower setting in winter when there's not much pollen. Or if you're spring cleaning and dust is flying around as you move furniture, a higher may be required. I would also certainly switch it to Boost if I noticed the air quality light was showing red and indicating that the air was quite polluted. part filtration system: captures 99% of common airborne PM 2.5 pollutants (allergens, odors, smoke, mold spores, dust mites, pet dander In our opinion, the app could do with a little refinement, perhaps showing air quality history from earlier on in the week. Note that the location setting isn't particularly accurate, either. Design-wise, the MeacoClean isn't the most attractive, but we do appreciated function over style when it serves a purpose as good as this one. Controls are pretty simple too. They are as follows: one button on the top that you push to cycle the Blue Pure 411 between its three power settings. And that's it. No apps, no displays, no flashing lights apart from a red one that tells you when to change the filter. It's very lagom, as the Swedes say. Or do I mean hyyge? It's simple and minimalist is what I am saying.

In our tests, we found that the air purifiers removed the lingering smells of candles, incense and dry shampoo. For bedrooms, hallways, front rooms, parlours and anywhere else you're not setting fire to stuff the Blue Pure 411 seems to do a perfectly good job. The maximum room size recommended by Blueair is 15 m sq which, understandably, is on the small size. Blue Pure 411 cleans your indoor air completely five times per hour, and gives you great value from day one – and throughout your whole ownership. On normal operating speed, Blue Pure 411 uses only 1,5 watts, that's a big win for you and for the environment. In fact, as an Energy Star-Certified air purifier, Blue Pure 411 uses only half the energy of a small LED light!IN terms of power consumption, having been on for four hours on the Everyday setting, the air purifier used only 0.008kWh of electricity, which is so low you’ll barely notice a change in your electricity bill. In the UK, this is less than 2p per 24 hours of continual use at this setting (based on an electricity price of 35p per kWh). In the US, the cost would be less than 1 cent for a 24-hour period (based on an electricity price of 20c per kWh). Note that prices vary between states and suppliers, so you may need to do your own calculations. Either way, the Blue Pure 411 Auto air purifier isn't an appliance that guzzles energy. All of the air purifiers featured in this guide have been tested by the editors on TechRadar. They've been reviewed at home (no labs here) in real-life situations, used daily across a minimum of a two-week time frame. It's compact and very light at just 1.5kg so it's easy to carry the thing around. Putting it in the kids' rooms seems like an obvious use for the Blue Pure 411 but I do worry it might not survive the encounter in the long term, unless your children are particularly well behaved, or you put it out of their reach.

Carbon filters remove chemical fumes including VOC's, traffic combustion gases, pet odours, tobacco smoke and many more gaseous pollutants.However not all carbon filters are the same. Basic carbon 'sheet' filters are generally lightweight and have little capacity to adsorb these pollutants effectively. On the other hand filters containing actual carbon 'granules' are infinitely more effective and should always be chosen over carbon sheets where the most effective gaseous pollutant removal is required. During testing, we found that an app can deliver greater insights to the air quality inside the home. There's only so much information that the display panel can show, and if you want to monitor the air quality over a time period, then this is only possible through app support. AHAM certified room size is the size of room in which the air purifier can provide a full five air changes per hour. Therefore refreshing all of the air in the room through its filters once every twelve minutes.This is more relevant than 'maximum' room size which does not reflect an air purifiers genuine effective capability. Always be sure to only use the 'AHAM certified' room size for true comparison purposes. We haven’t used the air filter in our kitchen, which is at the other end of the house, so I can’t say how this does for cooking odors. Other reviewers suggest the Blueair works really well though, as long as you move it to the kitchen while cooking. Similarly, it’s hard to tell how effective the Blueair is for VOCs, given that we’re pretty diligent about avoiding these in our home.As for those wildfires, it will be interesting to see how this filter performs if we get a lot of smoke again like 2020. Subjectively, it performed well in 2021, keeping our indoor air clear on the smokiest days. I didn’t have an air quality monitor at the time, however, though I do plan on acquiring one this summer. If/when I get readings, I’ll update this post with results. Despite the picture above, there is no way I'd use this in the kitchen if you're doing high-temperature cooking that will produce smoke and oily fumes. Get a more butch air purifier if you're going to do that. Or, you know, turn on the kitchen extractor fan that is there to do that exact job. When you're choosing the best air purifier for your home, there are a few key things to consider before you buy. I’m very happy with the overall performance of my Blueair Blue Pure 411 air purifier. It makes a noticeable difference to the air quality in a room, is easy to use, and has the added bonuses of being a white noise machine, nightlight, and fan.

As far as I can tell, the warning to change the filter is based on time passed rather than sensing how saturated with allergens, particles and smoke it is, so it's probably wise to keep an eye on it if you're using it in a more polluted area.

Value

A compact cylinder made of a choice of colourful plastics, the Blue Pure 411 is beautifully simple. It stands just 42.5cm tall and has a diameter of 20cm. It's among the simplest and most compact air purifiers you can get.

In addition to the smokey room test, we also evaluate the unit's CADR or clean air delivery rate. While many companies provide this information in a single number, the Blueair Blue Pure 411 breaks it up into three critical categories of air contamination — these are smoke, dust, and pollen. The 411's CADRs are about average for the class at 105 (Smoke), 120 (Dust), and 120 (Pollen). Noise What else can I tell you about the Blue Pure 411? Changing the filter is a simple matter, which is good since you'll be doing it a couple of times a year at least. The filter is a three-layer affair, with an outer filter to catch larger particles and dust, a fine HEPA filter to remove particles and allergens and a carbon filter to deal with fumes.

Aside from the hefty price, our only other (slight) criticism of the Dyson Hot+Cool Formaldehyde is that if you want it to automatically switch on when the unit detects changes in the air, you'll have to remember to put in Auto mode. But, of course, how well the air in a room is purified – or the room temperature adjusted – will depend on the size of the room. For example, the LG PuriCare AeroTower Air Purifying Fan with True HEPA and UVnano LED can purify a room size of up to 818sq ft, whereas the Blueair Blue Pure 411 Auto is suitable for a room size of up to 441sq ft. Opt for an air purifier that isn't suitable for use in your room will mean that it ultimately won't be able to deliver optimum performance. What I love about the Blue Pure 411 is that there are no app data read-outs to fuss over or make you feel (more) paranoid about your air quality. It just unobtrusively clears the air 5 times per hour. The Dyson Purifier Hot+Cool Formaldehyde HP09 is the most versatile air purifier here; this model is capable of heating, cooling and purifying the air. This makes it a fantastic choice for those who want to save some space and avoid buying multiple appliances to serve those different functions –but this 3-in-1 appliance does come at a cost. Some air purifiers can also cool and / or heat the room. Both the Dyson air purifiers and the Shark 3-in-1 Air Purifier, Heater & Fan with NanoSeal HEPA in this guide offer such capabilities.