* the main 2-in-1 Particle + Carbon Filter common to all three 411 models, which combines a particle filter to capture contaminants as small as 1 micron with an odor-eating activated carbon sheet inside that to reduce gaseous pollutants and odors (note, this filter is now sold in a plain box style) and, From here you can also remove the main filter by sliding it off the inner structure.The BLUE Pure 411 Series (which now includes the 411, the 411+, and 411 AUTO) from Blueair uses two types of filters: It removes easily – simply twist off the top white section, undo the velcro and slide the fabric from the filter. Maintenance is super easy, too the fabric pre-filter can be vacuumed and machine washed. Either way, the Blue Pure 411 Auto air purifier isn't an appliance that guzzles energy. Note that prices vary between states and suppliers, so you may need to do your own calculations. 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). 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 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. As expected, the unit is louder in Boost mode at 55dB, but still no noisier than most fans I’ve encountered. In Night mode, its gentle hum is barely noticeable, registering 29dB chances are, your own breathing will be louder. On the standard Everyday setting, the Blue Pure 411 Auto is quiet, measuring just 35dB on the sound meter. In fact, I noticed that despite the windows being closed (they’re nearly always open in our bedroom), the room smelt fresh and the air didn't feel heavy or stagnant as it can do when the windows are closed. In addition, it was reassuring to know the air we were breathing all night long was clean. 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.īoth myself and my husband slept well with the air purifier turned on in Night mode, with neither of us being disturbed by the sound of the unit. Or if you're spring cleaning and dust is flying around as you move furniture, a higher may be required. So, for example, if you're a hayfever sufferer you might choose a lower setting in winter when there's not much pollen. 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. But I’d use the Everyday mode in winter, when there are fewer contaminants that might irritae. On several occasions I noticed the air quality light change from blue to orange, as well as red the unit increased the speed accordingly, which was reassuring. As such, I kept the Blueair purifier running on auto the whole time, switching to Night mode at bed time. I was testing the unit in spring, when the pollen was affecting my husband's hay fever. This tells me that the air quality sensors are doing their job. The air quality light was showing blue at first, but just one spray from a can of anti-perspirant deodorant in the area above the purifier, saw it change to orange within a few seconds. All I had to do was familiarize myself with the controls, which didn’t take long since there’s just one button and four settings. The Blueair Blue Pure 411 Auto arrives set up and ready to go out of the box. Leaves air smelling fresh and light, as if a window has been open.This is further helped by the fact that said jacket can be switched out for one of a different color – there are five colors to choose from – simply by unfastening the velcro and sliding it off the filter. Its round shape is pleasing to the eye, and the fabric jacket that covers the bottom two-thirds of the unit detracts from the fact that it’s an appliance, allowing it to blend in with your space. It weighs just 3.8lbs / 1.68kg, too, so is lightweight and easy to move from room to room. First, as a floor-standing air purifier it’s quite compact, which will make it suitable for most spaces. The size and appearance of the 411 Auto air purifier where, in my opinion, Blueair has hit the spot. Filtration: Three-stage filtration system with HEPASilent particle and carbon filter technologyīlue Pure 411 Auto review: design and features.Blue Pure 411 Auto review: specifications
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