Then cover area is quite small and the CADR rate are low

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This post has been edited by wattsivy: Mar 29 2014, 11:46 PM

Y dun u get a better quality and higher efficiency and with bigger coverage area and higher CADR rate air treatment system. So u can put in living hall when u wan to sleep juz put into ur sleeping room and turn it on to clean d air.

If u buying a cheaper 1 usually d d performance ll be lower n coverage area is small. Juz like a example ll u be buying 2 nokia hp instead of getting 1 iphone which really can perform?


Guideline for choosing air treatment system:
1. How many micron of particle can be filter
2. How many types of containminates can filter, any prove?
3. Wat is d CADR rate? Area coverage
4. How to filter d gas, smell?
5. How to detect d air quality?
6. Maintenance cost?
7. Noisy?
8. How much electricity bill charge?

Those air purifier with ionizer function ll emitting electrone. It actually create ozone...not good for health

Sorry to be giving some my opinion. Hope you dun mind. I actually thinking to place a layer more filter is quite extra work and double work. Unless the 3M filter that put can filter smaller particle than the air treatment system.

Better air purifier doesnt not really have other extra function. I m using Amway atmosphere. It does not add on extra function.

Juz based on d the answer:
Filter 0.09micron particles
CADR rate is 7.1m3/min. Does check carefully when u buy other brand. Many ppl confuse n miss read for unit sq ft / mins or hr.
Filter 80types of containminates include influenza A, SARS.
It doesnt not consist humidter as i think this is smth extra. When u purchase air treatment system. Key point is filter haze, containminates, virus n provide clean air for u.
No need a big maintenance once a while 2-3years
It have sensor detect air quality. It wont noisy very silent so wont disturb my sleeping time.
D HEPA filter is 8.5meter long. Surface area of carbon filter is equal to 300++ football field

This post has been edited by wattsivy: Mar 30 2014, 04:05 PM

When i work as chemist we ll refer the products of data sheet.
So i m refer to data that manufacturer giving lo.
For HEPA filter it is truth. I saw it before when they take out d filter