Clean Air Delivery Rate is a measure of the air purifier's ability to reduce smoke, dust, and pollen particles. CADR is defined as " The rate of contaminant reduction in the test chamber (10 [..]

Used to describe the amount of times every hour that an air purifier will re-circulate all of the air in a room through the filter. This is really important when choosing a HEPA type air purifier. Aro [..]

A type of air purifier, such as AIRFREE

A normal particle or substance which causes an acute defensive reaction in a person's immune system. Common allergens are pet dander, smoke, and pollen, although the list of possible allergens is [..]

Tiny scales of animal skin etc. The most acute allergen from a pet tends to be their saliva which when it dries, breaks into tiny weightless airborne particles. 

The Air Quality Index is an index for reporting daily air quality. The index tells us how clean or polluted the air is currently, and what associated health effects might be a concern as a result. The [..]

An occurrence common with ionic air purifiers (Ionizers) that happens when the air around the air purifier becomes negatively charged. These negatively charged particles stick to the nearest surroundi [..]

A type of air purifier that uses ozone to clean the air. The air inside a coronal discharge device is charged with between 5,000 and 10,000 volts of electricity. The shock causes unstable bonds to for [..]

An airflow measurement of Cubic Feet Per Minute.

This type of air purifier operates by passing polluted air into a cell where it is then given a positive electrical charge. The air is then blown through steel plates which carry a negative charge and [..]