You can try but it doesn't really help much, sun bathing may damage the filter too.

But still can’t imagine my hepa filter (according to user manual to change every two years) could last without doing anything to it. On 24hrs per day.

I know the feeling, the filter is so dirty but best is still replace it after end of life.


This is my HEPA filter, new & used. The contaminants fills up every inch of the filter.


Imagine without air purifier where all these will be


The amazing thing is the back of the HEPA filter is completely clean, like brand new
Everything pass thru was clean as blocked by the HEPA filter.

The main purpose of air purifier is to trap contaminants, if one's doesn't require to replace filter, where are those contaminants going?
All air purifier need to replace filters.

But still can’t imagine my hepa filter (according to user manual to change every two years) could last without doing anything to it. On 24hrs per day.

Mind to show what air purifier doesn't need filter change? Ionizer doesn't really fall in air purifier category, it only traps contaminants in the air and fall to the ground, which the contaminants are still there.

If you are really looking for an air purifier, best to check for 3rd party certification. Many air purifiers don't even meet HEPA requirements (0.3 micron and able remove 99.99% particles, not 99%) but they showing their filters are HEPA standard. CADR & coverage area also might be misleading by the company. Example as below, advertised coverage area is whooping 2650 sqft (almost a luxurious condo unit size) but as tested by AHAM is 695 sqft (4 times smaller).

what brand and model you use? Change every two years for filter sound good for me.

what brand and model you use? Change every two years for filter sound good for me.

ur 2nd photo, the dirt so extreme, at least take a cotton bud to clean at least? how long been used? what supposed to be the lifespan?

Haha...thanks...no wonder I cant find any.

lazy bump like me always think of maintenance free thingy.   

Just change it will do, you temper with it the dust might be release out again

Lifespan is depending on usage & environment ranging from 1 year to 5 years. Mine have auto indicator when to change it, normally mine is about 1 year already need change as my area air quality is very bad (near bus station & industries area <10km away)

My friend are using the same model but he only need change after 2 years.

hi, do you leave it on 24/7 (well. when you are home at least)?

hi, do you leave it on 24/7 (well. when you are home at least)?

It can open 24/7 and aso save electric for this model..

It can open 24/7 and aso save electric for this model..

Yes, i leave it on 24/7 even i am not home or out for vacation. Only off when replacing the filters.
Most of the time at level 2 only 9 watts, sometimes will switch to level 3 which is only 18 watts. If i have spring cleaning i will on turbo mode.

which model you guys using? i looked back but couldnt find it. just bought a cheapo sharp AP (FPE50EW) before coming to this thread. hope its good. (or you both using same one as spreeee SHARP FUA80EW?)

which model you guys using? i looked back but couldnt find it. just bought a cheapo sharp AP (FPE50EW) before coming to this thread. hope its good. (or you both using same one as spreeee SHARP FUA80EW?)

I watched one video compare this atmosphere to other brand,
They both open quite long hour, the other brand is broke down in the middle of the challenge, the atmosphere still function well. My hs also using it

Atmosphere air purifier from Amway
https://www.allergyuk.org/get-help/products...re-air-purifier

What's the purpose you bought the air purifier?