Actually after reading all the last 10 pages, I am still unsure if I should get xiaomi Pro or air filter that has HEPA filter. Cos I buying it to clear the dustmite. My son has allergy to dustmite. I am so contemplating to buy xiaomi Pro with the antibacterial filter (purple). Other than xiaomi Pro, is there another worth buying air purifier with HEPA filter?
I am okay with xiaomi Pro if it really helps in clearing dustmite. I just need the assurance.
Pardon me. As I really not a technical or hardware person. I really do not understand all the technical terms. I just hope my son is well.
No worries, i am/was in a similar situation. My father, me, kids all also allergic, hereditary one.
I managed to break the code. 2 main issues, dust mite
droppings and mold. It could be both, it could be either one. You can't be too careful, just get rid of both coz they are sort of inter-related in terms of sources.
Dust mite droppings : sources are bedsheets, pillow cases, bolster that the kids put on their faces. Got dust mites = got dust mite droppings.
Dust mite droppings range from 10-40 microns in size according to google. So they are able to be suspended in the air should the sheets/pillows be roused, eg when you twist and turn during sleep etc, in the aircon room. Or before bedtime when you have activities in bed. But still, main source is still going to be from the mentioned soft surfaces. Anti dustmite stuff for the above mentioned are going to be key as they do not let dust mite burrow deep into the mattress depths and they also keep those already in the stuff deep in from coming out. A reduced population is always welcomed.
So for this an Air Purifier would help, but key is really getting the sheets dustmite proof.
Your aircon FCU would also be a good storage magnet for mold and dust mites (probably mostly dead liao) and their droppings. Confirm harbour a lot of the bad stuff.
For this, the air purifier(s) is a good way to keep the allergens in check, coz the only way for the aircon FCU to get these allergens to your kid would be via the air route. What you need is air filtration that is > 5 ACH or Air Change per Hour.
Take a typical BTO MBR, 3.8 x 4.5m x 2.8m = 48 m3. Subtract away 20% for the bed and cupboard etc, that'd be 38 m3. So you'd be aiming to have an air purifier that is able to do 38 x 5 = round up is 200 m3/hr whole night round while the AC is running, at a noise level that you still can sleep at.
If you are somewhat of a light sleeper, that probably means that a single Xiaomi 2S or Pro is insufficient. 2 units would be nice though.
In some cases, 5 ACH might not be sufficient, you might push need to push it closer to 8 ACH, or even 10 ACH. It really depends on your individual's case.
If you are DIY handy enough, try to DIY clean your aircon FCU. Removal of source is always welcome. I am using a pressure washer with variable pressure and 360 nozzle that offers flexibility....but i do agree that some of us are pretty hardcore in the washng. For the average pax, a 12V car wash type of pump and a 90 deg hand wand also works.....cheap also. Clean with your window/glass washer or AJAX/Magiclean floor cleaner, will work one, i and other pax have tried before.
Details all here.......read the thread backwards, better :
https://forums.hardwarezone.com.sg/...diy-clean-your-aircon-blower-5091470-208.html
If cannot DIY, you'd be aiming to get the professionals to come in to chemical wash your FCUs at least 4X a year, preferably 6-8X if you are on the slightly OCD side. So yes, it would cost. But ask them to chemical wash with pH netural evaporative coil cleaners, NOT the alkaline coil cleaners as the alkaline ones would corrode your coil with such a high freq washing.
Not going to be easy. Allergies are like that. That time my kids having chronic uticaria also........ i mean can't be always hitting them with antihistamines constantly also (the meds response also goes down after you use for an extended period).
Happy reading.
https://forums.hardwarezone.com.sg/...diy-clean-your-aircon-blower-5091470-208.html
