System includes 4 precut activated carbon pre-filters, as well as a true HEPA filter. Lightweight. Base removes to transform it from a tower into a tabletop unit. Quiet operation. 3-stage fan speeds. 100% ozone free. Easy setup. Covers 325 square feet. Filter lasts up to a year.
The fan can start to vibrate over time, creating quite a bit of noise. Replacement filters are expensive and hard to come by.
Features a pre-filter, carbon filter, and a HEPA filter. Quiet operation. Lightweight and very portable. 7.5 inches tall. Affordable. Works well for allergies. Main filter lasts 3-to-5 years, while the pre-filter should be changed every 3 months or so.
Only purifies up to 50 square feet. Running light is very bright for nighttime, and impossible to shut off if the unit is running.
2-in-1 filtering system with a pre-filter, activated carbon filter, and a true HEPA filter. Also features a UV-C light to destroy germs and bacteria. Auto shutoff after 2, 3, or 8 hours. 2 speed settings, as well as a night mode.
Some feel that the airflow from this model is weak. UV-C light is difficult to replace when it burns out.
Commercial grade ozone generator that is available in several colors. Covers up to 4,000 square feet. Constructed of industrial grade steel. Low energy usage. Effective. Low maintenance, with no filters to clean. Produces 6,000 milligrams of ozone. Purification plate lasts 6,000 hours.
For use in unoccupied spaces; you can't just run it in the background. The ozone plate is inconsistent, and doesn't light all the way up.
Filter stages include a pre-filter, true HEPA filter, a cold analyst, and an activated carbon fiber filter. Has a stylish, slender design. Features an independently-controlled negative ion generator, as well as auto on/off timers. 3 air speeds. Works well in a variety of room sizes.
Some buyers report problems finding replacement filters for this purifier. This option can run a little loud.
By spending about $100 or slightly less on an air purifier, you will not get the least expensive purifier on the market, but instead a mid-range product that will help you keep your home-air safe and healthy. Most in this price range will come with a high efficiency particulate air (HEPA) filter to pull a large amount of extra particulate or other contaminants out of the air you breathe. Air purifiers under $100 will be helpful for people with allergies, or who want to eliminate smoke and pet odors. However, they will not be able to treat more than one room at a time. Check on the longevity promise on the filter you consider, as well as additional features on your air purifier including automatic shut-off.
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