The air purifier uses the pre-filter to remove the larger particles in the air. This can be washed at will, to keep the filter clean and the air pure.
The true HEPA filter
An carbon filter that gets the rest of the impurities out of the air your family breathes.

There is a separately control Ionizer which purifies the air further and also helps freshen the pop up air filter cartridge. Changing filters is a breeze.

With this air filter, you and your family breathe pure, fresh air all day, all night, in your home. Think what that would do for your skin. For your overall health. AirFilters

For the office, you need something more heavy duty. Like this Soleus SA-150 Office Air Filter

Since you probably spend most of your day in the office, the air you breathe in the office plays a part in your overall wellbeing. And that of your staff and colleagues. Purer air, healthier staff means less medical expenses to the company.

This state of the art air purifier tells you exactly what it is doing. To keep electricity costs down, the air filter is smart enough to clean only when necessary. Use its remote control to control how clean you want the air to be.