Holmes Airpurifier

The Holmes HAP242 Air Purifier does a decent job of improving the air quality in my small office. My office is slightly larger than the 10' x 11' space the Holmes HAP242 Air Purifier is recommended for. The are without a doubt much more effective air purifiers available.
However, I do like the small space requirements of the Holmes HAP242 Air Purifier. I also like the fact that on medium setting of the three available fan speeds, that the Holmes HAP242 Air Purifier is almost completely silent. In my smaller office setting a noisy HEPA filter would not work well as I spend a great deal of time on the phone and the noise of a larger air purifier would cause problems.
In a home setting I would recommend going for a more efficient true HEPA filtration air purifier. Though is price is a concern the Holmes HAP242 Air Purifier is very cheap at typically under $50, and it does help air quality a bit.
The Holmes HAP242 Air Purifier is equipped with an ionizer as well to help remove particles from the air, as well as a carbon odor reducing filter. I noticed no difference in the level of odor in the office when the Holmes HAP242 Air Purifier was in use however.