Review on Braun SensorAir Air Purifier White by Courtney Stone

The most attractive feature of this air purifier is its automatic mode: it is equipped with a sensor that measures the air quality and changes the fan speed accordingly. My home in Northern California has been running at minimum power for a few weeks, but I'm not in allergy season right now (August). I won't really be able to appreciate his performance until next March when the trees start trying to kill me. Brown says he recommends this device for a 300-square-foot room. Other competing departments claim they can clean much larger spaces; Obviously, you can't trust any of these claims, but Consumer Reports rates some air purifiers for rooms up to 650 square feet. As I said above, it ran at the slowest speed during the allergy-free season in a 3,000-square-foot facility. Braun doesn't provide CFM or CADR specs for the device, so it's difficult to compare it to others. Braun's manual says the device should run 24/7, so I'm guessing it's likely to last a long time if you use it continuously. It's pretty loud at maximum fan speed, but you'll probably never run it at that setting. If you set it to Auto, it might run at maximum fan speed for a minute or two, but then - hopefully - it detects that the air is cleaner and can slow down the fan speed. At the lowest fan speed, being in the same room while trying to sleep is perfectly fine. It has four cleaning zones - pre-filter, "ECO" filter, ionizer and odor filter / volatile organic compound filter. . The first two filters can be cleaned in the sink every three months; the odor/VOC filter needs to be changed every six months and costs $50. So expect to spend $100 a year on filters. Because it has an ionizer, this device emits some ozone, but it doesn't seem to be a cause for concern. The California Air Resources Board certifies air purification devices, and to be certified, a device must not emit more ozone than a specified amount. Braun SensorAir is included in this list. I had an old Honeywell air purifier and could smell the ozone it was putting out; I don't feel anything from Braun. It seems a bit pricey compared to some other devices, but air purifiers are so diverse that it's really hard to tell if it's a good deal or not. At the moment I can't say how effective it will be in allergy season, but for now I like the automatic mode, its low noise level and the relatively low filter costs.