crwdns2933423:0crwdne2933423:0

Winix C535 is an air purifier mentioned for rooms up to 360 sq. ft

Motor is making a Wha Wha Wha noise

The noise is definitely coming from the motor and the frequency of the wha wha noise increases with increased fan speed.

Is there a replacement motor available?

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I also have this issue and it seems to be a motor starting to fail. Unfortunately I can't locate a replacement motor for a perfectly good unit. I, not thinking they wouldn't have replacement parts have left mine on high for a year to help with our extremely poor air quality with forest fires. 😢

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@fisherofmen and Mike Stout have you checked to see if this is not a fan issue? Any build up of any "debris" on it? I am really sorry to hear about your forest fires....

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Yes, I've completely disassembled the unit to the fan to clean it and check the fan for damage or unbalance.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@Mike Stout

Post an image of the compliance plate that is on the motor. Perhaps that may help to find a replacement.

Here's how Adding images to an existing question is done in ifixit

Also, if you haven't already done so, try and contact Winix and ask if replacements are even available

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Mines doing the same thing, I tried getting some lithium into the bearings but I think they may be sealed as pushing it into the shaft space didn't seem to do anything

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The motor bearings are shot. Here in the future (2025), it still appears to be impossible to get a replacement motor. (OEM item number ZWA138D58A) I assume this is due to Winix greed. Anyway, there are ways to replace the bearings if you're handy, but I've yet to open the motor casing so I'm not sure how easy they are to pull out. You'll need screwdrivers, a 10mm socket wrench (or equivalent), a soldering gun, a soldering wick, solder, and new bearings. I can't find anything definitive as to what type of bearings they are, but a post on Reddit states they are 608Z or 608ZZ bearings, like what's used for skateboard wheels. So if that's correct, at least they're cheap.

I assume Dennis has already replaced the unit by now, so I am just leaving this comment for anyone else who may be having the same issue. Good luck!

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Dennis crwdns2934231:0crwdne2934231:0
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