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how often should we change cpap filter

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how often should we change cpap filter

Postby mokylim » Tue Apr 12, 2011 8:17 pm

as what the topic says, how often should we be doing this? ive been using mine for about 4-5 months.though i dont feel any difference on the quality of air im inhaling.thanks
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Postby Janknitz » Tue Apr 12, 2011 9:08 pm

Depends on your machine and the type of filter.

For the Philips Respironics machines they have one foam "permanent" filter, and one paper "allergy" filter. I change the paper filter about every two weeks as recommended. My house is pretty dusty and it's definitely turning grey when the two weeks are up. In a cleaner house, you could probably go a bit longer.

The foam filter should be rinsed weekly and replaced every 6 months. You can probably get away with using it longer than 6 months, but I find it's getting a bit stiff and misshapen about that time.

But your machine filters may need a different schedule. I'd try to adhere somewhat closely to the manufacturers recommendations--you may THINK the performance of your filters is fine well past the recommended time, but some of the clogging could be less noticeable, and that can make your CPAP's motor work harder, heat more, and shorten its life. It's like giving your machine its own case of OSA ;-)
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Postby redbeard » Tue Apr 12, 2011 9:09 pm

I'm a newbie myself, but 4-5 months w/o a filter change seems like a long time to me. I think my machine is supposed to show a message when mine needs changing. I don't know what kind of machine you have and whether it does the same or not. Do you have a manual and does it reference this issue?
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Postby mokylim » Tue Apr 12, 2011 10:03 pm

im using a respironics system one.. i have an extra gray filter that came with he machine.
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Postby Mrs Rip Van Winkle » Wed Apr 13, 2011 9:39 am

Typically the foam filter is replaced every 6 months. I clean mine (rinse in water and a little Joy) at least once a week. The white paper filter...if you are using one...I change when it is dirty. When I see it is no longer white I change it. It is recommended to at least change every two weeks... I often need to do it sooner due to our HVAC and leaky ducts. I buy my white paper filters in bulk online verses going through my insurance...works out to be about the same out of pocket cost for me.
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Postby littlemissy » Sat Apr 16, 2011 1:49 am

Which filter is it? For most machines there are two different filters, the foam filter that filters out large particles, and the disposable filter that filters out
particles. I was told that using both is always the best so I use both. The foam filter should be washed out weekly. I don't want to advertise any product but I use dish detergent. Atfer rinsing I roll it up in several layers of paper toweling to get all the moisture out. Don't wring it, I had the unfortunate experience of wringing it and getting it destroyed :/

The paper like one are disposable so... dispose of it! :P I suggest that you look at the back side
of the filter. As soon as you see grey or dark spots appear, change the filter.

You will not necessarily feel and different from the filter air. When you see the amount of debris the filters strain from the air flow, you can see
how much cleaner the airflow is. Remember, you breathe dirty air all day long. Filtering the dirt out of the air only makes sense.
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Postby CrohnieToo » Sat Apr 16, 2011 1:03 pm

Read your Users Manual. Follow the manual recommendations. If you notice a filter looking dirty before the recommended period, change the filter anyway. Just don't go longer than the manufacturer's recommendation. Its not like filters are all that expensive - and insurances cover these type of "accessories".
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Postby mokylim » Mon Apr 18, 2011 11:44 am

so i just checked and cleaned my cpap this morning. i found out i only have the "grey" filter in the cpap machine. no white one. so i cleaned it with warm water with a drop or two of mild hand soap. should i buy one online and use one or is the grey filter good enough?
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Postby littlemissy » Mon May 02, 2011 3:52 pm

I would suggest that you wash your grey foam filter once a week. Dawn Original Dish Detergent is about the best you can use, I was advised to use this and I did lol. It will clean your filter and cut any oils or greases that might have been airborne. Just make sure you rinse it very well. Use a couple of paper towels folded double. Lay the filter on the toweling, roll it up as tight as you can. Do not wring it out. That will destroy the filter.

I suggest that you use the white disposable filters. The filter out items as small as cigarette smoke. The need to be replaced every couple of
months. They will give you a very clean breath of air.
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how dirty does it look?

Postby truckerdad57 » Fri May 06, 2011 7:01 am

It also depends on how dirty or dusty where you sleep is.

I drive semi-truck for a living. I clean my filters at least once a week. If I sleep in a dusty gravel lot every morning.

I also have hay fever. during the pollen season keeping the filter clean (and adding the HEPA fine paper filter to the foam ones) help the hay fever.
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Postby xenosfrog » Fri May 06, 2011 2:11 pm

hi mokylim. The spongy one is to trap the larger particles and will let pollen and small dust particle through. I was the spongey one out each weekend with plain castille soap (a very very mild vegetable-based soap - so mild you can brush your teeth and gargle with it). The fine paper one is designed to trap the smaller particles. , In general, although it seems counterintuitive, filters actually filter better, the dirtier they get. This is because the trapped debris and particles tend to form bridges between the openings making a finer and finer web (becoming part of the filtering mechanism itself) and letting less and less through as debris builds up. (I am telling you this so you dont get too concerned that it might be so dirty after 5 months that dirt is getting through). That being said, as debris builds up this also puts more strain on the motor which has to drive the blower and work harder to draw air into the machine and keep the pressure up in the mask. (I actually burned out a motor in a HEPA vacuum cleaner because I waited too long to change out the HEPA filter). Therefore, it is important to change the paper one fairly regularly. I try to go by the mfrs recommendation and also check and would change it sooner if/when the outside gets noticeably gray. Scott
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