Thread: Water-based air purifiers

Does anyone used that type of air purifier?
Lighted Water Air Purifier and Freshener @ Sharper Image
How good are they in comparison to other air purifiers?
I would be glad to have an air purifier combined with air moisturizer. And no need to replace filters.
Do they really clean air from dust, microorganisms and exhaust gases well?

Evidence that water filtration of air is of limited efficiency; Bong - Wikipedia, the free encyclopedia

HEPA (High Efficiency Particulate Air) filter is a mechanical filter that traps airborne particles as they pass through an air purifier. A true HEPA filter is rated to remove 99.97% of all particles that are 0.3 microns in size or larger. A micron, also known as a micrometer is one millionth of a meter. As a reference point a human hair is approximately 60 microns in diameter and a grain of pollen is 5 microns. 90% of all airborne particles are less than 10 microns in size and the challenge with air purifiers is that most of these particles are too small to see. The light weight and low mass of these particles allow them to be suspended in the air for extended periods of time while the larger and heavier dust type particles tend to settle on the ground much more quickly.

In a review of air purifier technologies, HEPA air purifiers are the recommended filtration method of leading government agencies such as the American Lung Association, Department of Homeland Security and EPA. This favorable review is due to the high efficiency of the HEPA filter and it’s inherent ability to improve performance over time.

Recommendation: to best enjoy the benefits of cleaner air, find a purifier with a high efficiency filter, good air flow and reasonable noise level.

EPA air filters are rated highly due to their ability to remove a very high percentage of particles with each pass of air through an air purifier. If you suffer from allergies or asthma a HEPA air purifier is almost always the best choice since its filtration is designed to remove the tiny particles that trigger an allergic reaction. The particle removal performance is generally significantly better with a HEPA filter as compared to the ionic and electronic air cleaners. In addition, HEPA air filters often improve performance over time whereas the filterless technologies (ionic, electrostatic) see a decrease in performance over time as the electronic plates become dirty.

A HEPA filter does not generate ozone although you will want to review the product specifications for the air purifier to verify there is not an elevated level of ozone from the electrical workings of the air purifier. We have not found any elevated levels of ozone in the HEPA air purifiers we have tested. In late 2010, the state of California will require all air purifiers to be at a safe ozone level and this will likely increase the percentage of air purifiers sold with the HEPA technology.

My friend using this from last 2 years and its very good.