1. Does this give off ozone? 2. Does this use "true" hepa filter? 3. What is the difference between AC4100 and the AC4020? 4. Made in China?
2028415
This unit does not seem to produce ozone, which is often evidenced by a metalic odor. HEPA filters come in grades and as this is a low price point don't expect too much. No idea of the modle number differences. Made in China? Not sure but it still smells of poorly formulated plastic weeks after receiving the unit.
1017145
I called the company directly, was transferred to an overseas operator, who said it does produce ozone at 5ppb. 50ppb is the maximum recommended by ??? (she was kind of vague on that one). i wonder whether they understand the technology or all the different emission standards we have here ...
991257
There is no HEPA filter. There is a dust filter but it does not qualify as HEPA.
922615
There are two filter that the tower uses. The first, is the Air Purifier Booster Filter and then there is the Hepa Filter. I've had mine for about 2 years and run it everynight, and so far, have only replaced the Hepa Filter only once. The Booster Filter does NOT need to be replaced! Yes, you heard it right! I Vacuum mine and good as new. Some previous post wrote that they washed it. I think that is a waist of time and too much mess. Get a good vacuum and hose it down. Hope this helps.
1918061
Great Question :) Yes we sell the WASHABLE HEPA filters for only 25 dollars on Amazon at http://www.amazon.com/Washable-filter-Comfort-Models-later/dp/B00D2YJ22S/ref=sr_1_8?ie=UTF8&qid=1382643999&sr=8-8&keywords=New+Comfort+HEPA Usually washable HEPA filters cost about 39 dollars so its a good deal. Let us know if you have any other questions :) Thanks Dustin GreatVacs
1106482
Yes. I was confused by the picture of the filter too. The AC5000 unit (black, silver control area, blue UV light tower unit) used to use 2 filters "pushed together" on top of each other, but now it seems to be a single filter and more expensive too! Yikes!Hope this helps.
754829
I've been changing the charcoal ones about three months(that's what they say to do),and that seems to be working out ok. You can take the cover off, and see how much stuff has accumulated on the filter, and I guess make your own determination. Have not changed the HEPA yet, I will probably go for the year, and see if it looks like it needs to be changed. It probably will. It's my feeling that most companies have spent lots of $$$$$ testing their products under varying conditions, and have set up the change intervals to optimize performance. 04/12/2014 Just changed the complete set of filters after about a year. The red HEPA light came on, and I ordered a complete set. I figure the cost is about a quarter a day. Not an issue for the increase in air quality. Hint: (1)Press and hold the reset button until it blinks, then it will go out.(2) Use a small hand vac with brush to clean the sensor area, it will pick up impurities quicker, hence, the fan speed increases quicker and doesn't have to run faster as long. After a year, we are completely satisfied with the EL500.
199853
No,it isn't a HEPA filter & uses no activated charcoal.It is a finely constructed filter & is also electrostatic in operation.I'm not sure a HEPA filter is much more effective.
213529
I now own 2. It has a carbon filter but the main filter unit is a great hepa filter. Removes smoke and hous hold odors great. Have had in in a sick room and it was great in there as well.
1496380
There are two filters. The first filter is a thin mesh that you could vacuum off and then wash by hand. I run my unit 24/7 and the mesh filter needs changing several times a year. The second filter is a HEPA filter and it's not washable. I've changed it once after one year of use and these filters are not cheap.
873734
Prefilters help filter out large particles whereas the HEPA filter is meant for the smaller particles. You could run the unit without a prefilter, but the HEPA filter would get clogged more quickly and need replacement earlier. HEPA filters also cost a *lot* more than prefilters, so...
775393
The AP45130L and the AP51030K share most of the same features (True Hepa, Large Room size, sleep mode, etc...) which is a great thing for the APR45130L because the AP51030k has won consumer reports #1 ranking in air purifiers that last 4 times running. The key differentiating features are: - LED display gives you a readout of the current air quality status - Remote controllable - VOC Sensor (VOC stands for Volatile Organic Compound) automatically detects VOC's, dust, pollen and dander in the air and will automatically boost the cleaning speed of the air purifier to get the VOC level back down. An example of this feature would be if you had the purifier on in the kitchen and you clean your counters with a bleach spray, the APR45130L will pick up the chemical in the air and boost the cleaning speed until the chemicals have been removed from the air. Hope this helps!
695885
I'm sorry Ethan but I do not know the other model, so I can't compare. This model has been excellent for my astma, I use it in my office. The is another purifier brand, IQAir, http://www.iqair.com/, that I think is better, although more expensive, that I use at home.
1322849
have you noticed any difference after cleaning the filter since it is not replaceable? did it damage it? that is a concern because i am definitely looking for a hepa air purifier with a pre-filter..
46617
This unit uses 3 hepa filters, which come with it new, and 1 pre-filter also included. If you buy replacement hepa filters on Amazon look for the 2 pack. It's barely more than the single filter price.
1017144
Read the product description. It's a permanent HEPA filter with a UV light. Do either of those produce Ozone?
2172647
I thought the same thing when I ordered. I was mislead by the numerous reviews that went on and on and on and others commenting that "50250N is the same thing" --- NO, IT IS NOT. Amazon is selling the 50250S model --- as noted in Amazons "Product Description". I spent most of my time reading the reviews which I suspect are there to skew the readers impression of what they will actually be receiving. ***THIS IS NOT A LIFETIME HEPA FILTER THAT YOU ARE PURCHASING WITH THIS MODEL HERE****50250S, the item being sold here and linked with these reviews, only has a long life Hepa filter, NOT a lifetime hepa filter. I thought the same thing when I ordered. I was mislead by the numerous reviews that went on and on and on and others commenting that "50250N is the same thing" --- NO, IT IS NOT. Amazon is selling the 50250S model --- as noted in Amazons "Product Description". I spent most of my time reading the reviews which I suspect are there to skew the readers impression of what they will actually be receiving. ***THIS IS NOT A LIFETIME HEPA FILTER THAT YOU ARE PURCHASING WITH THIS MODEL HERE****50250S, the item being sold here and linked with... » Read More I thought the same thing when I ordered. I was mislead by the numerous reviews that went on and on and on and others commenting that "50250N is the same thing" --- NO, IT IS NOT. Amazon is selling the 50250S model --- as noted in Amazons "Product Description". I spent most of my time reading the reviews which I suspect are there to skew the readers impression of what they will actually be receiving. ***THIS IS NOT A LIFETIME HEPA FILTER THAT YOU ARE PURCHASING WITH THIS MODEL HERE****50250S, the item being sold here and linked with these reviews, only has a long life Hepa filter, NOT a lifetime hepa filter. « Show Less