I’ve written quite a bit about how to choose an effective air purifier, so if you’re not familiar with CADR, AHAM and so forth, get a crash course here. Or consider buying the Blueair Blue Pure 411 (or 211+). These filters carry an AHAM Verifide seal and a CADR. The 411 has a CADR of 120 for dust and pollen. This means that at the top setting the filter produces 120 cubic feet of clean air every minute. For smoke, the CADR is 105. The purifier manages about 5 air exchanges per hour for a small bedroom or nursery, or one every 12.5 minutes.

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. The Dyson Purifier Cool Autoreact gets our vote for the best cooling air purifier. It's also a good option for those who prefer a model without any smart functionality, this model doesn't come with an app. 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.Yes – air purifiers come with carbon filters that remove the Volatile Organic Compounds (VOCs) that cause smells. These could be cooking odors, scented candles or aerosols.

The size and appearance of the 411 Auto air purifier where, in my opinion, Blueair has hit the spot. First, as a floor-standing air purifier it’s quite compact, which will make it suitable for most spaces. It weighs just 3.8lbs / 1.68kg, too, so is lightweight and easy to move from room to room. During our tests, our reviewer, Jennifer, found that the Autoreact did a better job of purifying the air rather than cooling it; it took this model some time to bring down the temperature of a room. In fact, by the time the room was showing as having come down in temperature, we no longer needed to be cool/ or we had moved rooms. The 10 speed settings and night time mode were useful for speeding up the cooling and purification of the air, and keeping control of the noise output. We found that it does have a number of small flaws in terms of response times and fan speeds though, and the performance will vary depending on the room size.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. 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. Unlike many filters, the Blueair Blue Pure 411 comes with a polypropylene filter that can be easily replaced and recycled. Because the pre-filter is external, though, you can easily remove and wash this, meaning it never needs replacing. And if you keep the pre-filter in good shape, with regular vacuuming and cleaning, this will help extend the life of the 2 nd and 3 rd stage filters, helping to further save resources.