Cheap Air Purifiers

Not powerfull enought - buy it for exrta small rooms ONLY!!!
just a few thoughts about this air purifier- it's not a bad air purifier, it just doesn't live up to the promises the manufacturer gives - it says it on the box - for rooms up to 500 sq.feet , well i bought it for my living room which is aprox. 400 sq feet - it was a total waste of time and hopes. then i moved it to the bedroom - about 200 sq ft. - hmmmmmm after 3 days of non stop running on the highest setting i noticed a slight difference in the quality of the air .Then i opened the cover and there was some dust on the filter, meaning - it was doing something but, well not quite good or at least not quite as advertised.

I'm giving this product 2 stars because it's relatively cheap and in my smallest bedroom - about 120 sq.ft it did a good job.

In conclusion - very underpowered product and NOT suitable for large rooms. the UV light is a good addition and the ozone function is nice as well and hopefully will do there job but this is not an air purifier for 500 sq.ft as advertised. not even close.....i recently purchased another air purifier - Winix 5300 and that is a whole different story - check my review on that one if you wish.it costs 20 bucks more but boy oh boy does it worth it!

Same as D Fraser, am also very happy.
What D Fraser said!! Also ended up buying stright from manufacturer for less then Amazon, although I paid almost more then Fraser. Shipping from the manufacturer was free and fast via Fed Ex. Using in bedroom, seems to help with dog dander allergy (am on day 40 of the "100 day cough" and now developing asthma, ugh) and night time breathing is better and the room smells better. I think I'll buy another one for the living room of the house. Very happy with purchase.

I think the "D" model is the same as "C" except the "D" appears to have a slightly larger fan.

Very happy
Had my 'c' model for a bit now and I am very happy, the bedroom is definitely clearer and I am waking up much more refreshed and less congested. The unit is well built and quiet. I researched the difference between the 'c' and 'e' model and found they are identical except the 'c' has an added feature which is an ionizer booster control. The 'c' was only slightly higher in price, less than ten bucks, and I liked that feature so I chose the 'c' model. I shopped around on the internet and found the price range was large, with this price from Amazon being in the middle, I actually found the unit for 108 and it arrived in 2 days! Shop around a bit and you will save even more. Looks like Amazon has the edge on the replacement filter and UV lamp though- but they are designed to only be replaced yearly with everyday use.

Great value for the money
Great value for the money, this unit is nice and compact. For the amount of square footage that it covers, this air purifier takes up very little space compared to what's out there in the market. It also comes w/ an option for UV light and ionizer that you can choose to turn on/off.

Best value 5+ years running strong 24x7
This is an amazing deal I've had K air filters that performed similar to this filter. When I bought my first XJ- 30000 5 years ago they were going for 500 to 300 dollars I imagine the technology or scale has made them less expensive to make. Don't be fooled by those expensive air filters from evergreen or direct sales companies the mark up on them is 200x. Although this unit is not made in the USA what electronic gadget is these days? Highly recommend to eliminate mold and mildew from basements and in high humidity climates.