Do you use an air purifier? Need advice!

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Regular Member

Date Joined Mar 2012
Total Posts : 151
   Posted 2/13/2013 4:47 AM (GMT -6)   


I was just wondering if anyone uses an air purifier in their bedroom to help with their asthma.


Ever since we’ve moved in we’ve been battling mould on the window frames, and frankly I am a horrible house keeper, so the dust usually is winning the whole battle for a clean/asthma friendly house.


My main questions are:


Have they helped you?


What kind do you use?


Can you recommend one that’s slim line (TINY unit, I have a foot between my bed and the wall…)?


Can you recommend one that runs very quietly so I can sleep with it on?


Thank you!

Elite Member

Date Joined Jul 2009
Total Posts : 14475
   Posted 2/14/2013 4:06 PM (GMT -6)   
I used one for years but it was not really that helpful against mold.
Most of them are very noisy.

Wipe down your windows with a bleach solution (1 cup to a gallon of water).
Also buy a dehumidifier for your bedroom. It will dry the air out and help manage the mold.
If your windows are moldy then you need to get them fixed. They probably are leaky and let moisture come in from the outside.
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Regular Member

Date Joined Mar 2012
Total Posts : 151
   Posted 2/14/2013 7:26 PM (GMT -6)   
I attack the windows with Teatree oil every week (on average). I've also got an Ozkleen mould killer (bleach doesn't kill mould as much as it bleaches it into hiding) but it smells disgusting, so I only use it on the days I can have the house open. (I live in Melbourne, so we get maybe 3 days a year where it’s not stupidly hot, stupidly cold, stupidly windy, or stupidly wet… Some days we get all 4 within an hour.)

Unfortunately we're in a rental, and the landlord won't fix the windows. They're not very well sealed, but now I think about it most of the moister is probably coming from having two adults sleeping in such a small bedroom.
The biggest problem I have is dust coming in through the small gaps. It's like a little desert on my windowsill every few days, lol.

I'll defiantly look into a dehumidifier, it hadn't occurred to me.
Bit of luck it’ll help the room feel a bit less sticky on those hot nights as well.

Veteran Member

Date Joined Oct 2009
Total Posts : 5022
   Posted 2/15/2013 7:29 PM (GMT -6)   
I have a furnace that runs 24/7. The low fan setting that runs all the time only costs about as much as 1 100 watt light bulb. I use the large 4" filters and even without too much dirt, no pets, I have to change them every 3 months. If you can't adjust your heating/cooling system to take the larger filters and run the fan all the time, at least try the better pleated-type filters. You can probably tape one to the air intake of the dehumidifier. (Check instructions first.)

Your windows sound terribly leaky. Can you put some door seal strips around them? Maybe some duct tape? Tape will take off paint if left on too long. Maybe try painters' tape and change it and clean the tape residue off every month or so.

Forum Moderator

Date Joined Feb 2009
Total Posts : 7188
   Posted 2/16/2013 10:30 AM (GMT -6)   
Hi Madisun,
We recently moved into a new townhome and got an air filter on our furnace like the one Alcie has described. Like her, we keep our fan running all the time. It helps distribute heat/cool and moves the air through the filter constantly.

That said, there are some higher quality air filters (more expensive) that you can buy for your regular furnace air filter requirement. It can't hurt, and will probably help you.

I told my allergy/asthma doc that I had a furnace filter, and he still wanted me to use an air purifier in my room in addition to the furnace filter. I like white noise, so it works for me. I've actually used one for years, but only have had the "deluxe" furnace filter for 3 years. Mine sits on a table top. Just go online and search for air purifiers, and you'll find a wide range of them. My allergist likes the ones that use an actual filter and isn't a fan of the electromagnetic ones with the blades to rinse.

Have you discussed the mold problem with your allergist? I remember quite some time ago (a different city and different allergist) that I was given a script for a mold inhibitor/remover that you mix with water and spray on the offending area. Give your doctor's office a call and see what they recommend for your windows.

Good luck!

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Regular Member

Date Joined Mar 2012
Total Posts : 151
   Posted 2/17/2013 9:10 PM (GMT -6)   
Thank you for the replies.
The unit I'm in at the moment doesn't have any ducted heating/cooling (and no cooling at that... guh) and we haven't needed to run the heater since early September, lol.
We've had a run of 30degC+ nights, so we've been sleeping with the windows open... lo and behold I haven't had any asthma symptoms. So I'm thinking the trigger is more the humid air that builds up, not so much the dust.

After pay day I'm going out to find a small dehumidifier.

I'm going to try the tape on the windows as well... once this stupid weather breaks and I can sleep with the windows closed and not get woken up by mating wildlife... lol.

Regular Member

Date Joined Oct 2013
Total Posts : 48
   Posted 11/21/2013 11:18 PM (GMT -6)   
madisun, what humidifier have you got?

Regular Member

Date Joined Oct 2013
Total Posts : 48
   Posted 11/21/2013 11:26 PM (GMT -6)   
"I used one for years but it was not really that helpful against mold.
Most of them are very noisy."

i think for mould problems you should use a dehumidifier to regulate humidity level in the room which causes mostly the growth of moulds. just choose those which are not noisy so you can sleep well esp at night..

New Member

Date Joined Jun 2014
Total Posts : 3
   Posted 6/23/2014 7:30 AM (GMT -6)   

what were your criteria taking into consideration when deciding on which model/brand to buy?

Thank you,
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