Stands for Clean Air Delivery Rate. It measures the performance of an air purifier and is an important feature consumers can use worldwide to compare different brands of air purifiers. The CADR is determined by AHAM and reflects how fast a unit removes airborne pollutants such as dust, pollen and tobacco smoke from a room by indicating how much 100 [..]

Mechanical filtration such as high efficiency particulate air (HEPA) filters captures particles from the air by size exclusion using a fan to move the air through the filter. Mechanical filtration uses four different forces to capture particles: straining, inertia, interception and diffusion. Mechanical filters are very efficient in removing partic [..]

Blueair SmokeStopTM

AHAM, or Association of Home Appliance Manufacturers, is an organization that oversees standards, testing and verifications for air purifiers and other appliances. The organization has developed the  AHAM Verified program for air purifiers. AHAM is an independent organization which ensures that the testing results are accurate and impartial.

Air is our most important provision, which we consume 10 kg a day of, while we only eat 1/2 kg food and drink 2 kg water.

Air changes per hour (ACH) is a measure of how many times the air volume in a room is replaced. Dirt and dust are continuously introduced into the room environment. In order to keep the air clean, the air purifier must filter the air frequently. The frequent, the better. Depending on the room size and unit, Blueair air purifiers changes the air fro [..]

Is one of three methods recommended by US Environmental Protection Agency (EPA) used for reducing pollutants in indoor air. However, air cleaning alone cannot adequately remove all pollutants typically found in indoor air. It should be an adjunct to removal or control of air pollution sources and good ventilation.

Is the volume of air handled by the device per time unit. As the air constantly is bombarded with air pollution, high filter efficiency may not be enough if only small amounts of air are processed at a time, especially if pollutants are generated quicker than they are removed. The more air that passes the unit, the faster is the air cleaned in the [..]

The inlet where the dirty air in the room is drawn into the air purifier.

The outlet where cleaned air is discharged from the air purifier.