Replacement Universal Carbon Prefilter
Customer Reviews:2010-08-13 (sweltering in southern california) | Rating: 4
Just a little better than nothing2010-08-02 | WildOat | Rating: 2
Honeywell Universal replacement pre-filter2010-06-08 | Bigc (palo alto) | Rating: 2

Product Description
I have other ionic air cleaners, as well as one that requires a filter. This air purifier is quiet and due to its compact size, can be placed off the floor on a bookcase, dresser top or top shelf which makes it optimal for space-saving and placement. I don’t particularly like the noise from air filters and they have a tendency to keep me up.
After spending many dollars on replacement filters and new air cleaners when the filter is no longer made or easily available, this is a welcome addition with a permanent cleanable filter. I bought two of these, one for my bedroom and one for the living room. Set on low all of the time, it is great as it just sounds like a little white noise and is not noticable most of the time. The optional ionic on and off switch, night light, as well as the automated light indicating that the filter should be cleaned is a BONUS besides the low price. So far, I am enjoying cleaner air in an old dusty house with 3 cats and 2 dogs…
...The most serious flaw was found to be the valve placement that allows access to HEPA filter in the building's biosafety level three labs. The HEPA filters
To maintain a healthy home environment, always use a vacuum cleaner with a built-in HEPA Exhaust Filter that captures particles, such as allergens, Find whatever you're looking forall 2 news articles »
The white paper from Porvair: 'Cost and waste volume reduction in HEPA filter trains by effective pre-filtration' proposes and evaluates an alternative
rating of 6 means the filter is 35 percent to 50 percent efficient at capturing the measured particles; while a MERV of 16, such as in a HEPA filter, and more »

Frederick News Post (subscription)Fitch says the worker entry point may be too far from the filter, making it difficult to safely change the device. He is also concerned that contaminated Flaws delay opening of Detrick laball 10 news articles »