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Can the unit be mounted in a window? - 3M OAC100 Air Purifier

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Re: Can the unit be mounted in a window?

There is no reason why not if the outside part is properly weatherproofed and screened to stop insect etc ingress - easier may be to duct the unit to a hole in a window - use at least 125mm/5inch ducting and dont make it too long. It is not recommended to run the unit in this way, however, as you will almost certainly find that the filters etc will block very quickly due to many more airborne particles(especially living ones) in outside air (depending on your situation) and the fact that inside a room with the unit running you have a relatively closed system that will steadily get cleaner as you use the unit. best way to test this would be to run the unit normally but outside for a while to see if it functions ok. Hope this helps - i cant see that you would gain anything from running the unit in a window apart from higher filter replacement costs :)

Posted on Apr 20, 2007

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Hi Wendie286,

I just answered your other posting which described a low "humming" sound. A squeak is different. Then it's very likely the motor. You could try a _very_ small/light application of oil to the shaft where it goes into the bearings, but that's probably a short-term fix.

If the unit is over 10 years old, the motor will probably need to be replaced at some point. Below is the relevant portion of my response in your other posting.


[fan motors]... are the only moving parts and do eventually wear-out. If it's still turning, it shouldn't be a problem - - if it starts turning slower and slower, it's time to plan a replacement motor. I have a couple, but I think FixYa's terms forbid me selling it to you directly. Recommended solutions in this case:
1) If you still know an active dealer, you might see if they have any, or if they know of a source (Ecoquest no longer supports them with spare parts).
2) You could probably find them on the web, though the last time I did this (in December), I couldn't seem to find them; I didn't have a lot of time to spend then.
3) Find another XL15 (maybe on eBay) and cannibalize a fan from the older machine (note: different versions of the XL15 had different motor mounting configurations, so me sure you know what you're getting - maybe ask for a digital picture of the prospective purchase showing how it's mounted).

If you write back with more details, I may be able to offer more precise guidance. If you want, I could try web-searching again.

If I can be of further assistance, or if you have questions, let me know before rating me.

If this solves the issue, please rate it accordingly. My goal is to earn a "FixYa" rating from everyone I help.

Thanks for using,


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