High-Efficiency Particulate Air is a standard of air filter. By this standard an air filter must remove 99.97% of all particles greater than 0.3 micrometre from the air that passes through.
A device with an allergy filter can remove allergens and dirt from the physical surfaces in your home. It can make your indoor air cleaner and more breathable.
Audible noise is the noise that a device produces while in operation. Reduced audible noise improves quality.
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
The thickness (or depth) of the product.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
The height represents the vertical dimension of the product.
The width represents the horizontal dimension of the product.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Note: This may vary by region.