A great option for a less expensive air purifier is the Honeywell HHT-011 which can be conveniently placed in small bedrooms, kitchens, or offices. The unit is easy to use and maintain and it's designed to be durable. For more information, read the review and see it suits your needs.
The CADR is an accurate test that evaluates the air filter's ability to remove the contaminants from the air and it should always be checked when looking for a reliable air filter. So, if you want to know more interesting information, read the article and see what does CADR stands for.