Winix
C545
Based on 72 Reddit mentions
$265.05
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Most discussed features
Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
‘Worst case scenario, it’s all summer long’: Air quality alert in NYC, as smoky skies seem here to stay
The most common recommendation is the one that Costco has sold for years, the Winix C545. They put it on sale for $100 multiple times per year and sell the replacement filters for cheap. I have it and it’s great. Quiet, has smartphone controls, looks nice, etc.
CactusBoyScout in r/nyc
June 12, 2025 8:59 PM
33
Please help me not waste money
Winix America has the C545 refurbished $59.99. I've purchased these, they always come with new sealed filters and are like new. Never had a single one I'd say looked used. I don't know if there's just an army of CR box people in this subreddit for the past month or so.... I like CR/Corsi Rosenthal B
...AirFlavoredLemon in r/AirPurifiers
April 4, 2026 9:22 PM
4
Best air purifier under 100$
i did a TON of research a couple days ago about this. i settled on a used/refurbished winix c545 for $60, but the filters are lowk kind of expensive. they sell them in a pack with 4 carbon filters for odors that you switch every 3 months for odors and a filter that lasts a year for $50, which isn’t
...Tiny-Bread2389 in r/AirPurifiers
April 28, 2026 4:07 PM
3
DIY Attempt Finished 2 MERV 14 filters 8 case fans.
I didn't make the point in this thread, but on another - I'm not sure why anyone is comparing retail priced units against a CR-style DIY box. C535 from Winix, new, at costco is on sale periodically for $99.Another that sold out is the C545 for $69.99 at Winix direct, which just sold out last week. F
...AirFlavoredLemon in r/AirPurifiers
April 14, 2026 6:24 AM
2
380 sq ft bedroom. Looking for recs
https://www.reddit.com/r/AirPurifiers/wiki/buying_guide/ Buying guide. Grab whatever is cheapest on the list for "little to no sorbent media". Double check filter costs - ON SALE - using a deal site. I think Winix C545 filters are two for $60 right now on sale (which I think is a bit steep, personal
...AirFlavoredLemon in r/AirPurifiers
April 7, 2026 3:39 AM
2
Home air purifiers for vaulted ceilings and a cat with asthma?
Winix is great for aftermarket filter options. For rooms we have smaller c545 that are pretty cheap refurbished direct from winix. And then our large valued area we have two c909s one I got from Costco online another I got for refurbished from winix. But stock is hard to come by for the refurbs dire
...damien09 in r/AirPurifiers
August 21, 2025 9:59 PM
3
Stay away from Mila Air - They stalled until my unit was out of warranty.
I went through 11 or 12 Milas (originally bought 5) that all had bearings issues or capacitor failures. I finally broke down and bought 5 Winix refurb C545 units for $69 each 2 years ago....best decision ever! They are super easy to clean, I can get off brand filter refills that are a bargain, I lov
...BacardiBlue in r/AirPurifiers
September 12, 2025 12:39 AM
2
Air Purifier for All Concerns Plus Food Smells
We now have 3 Winix units. Bought a 5520 a couple months ago when it was on sale on Amazon and liked it so much got a c545 and c909 refurbished from Winix direct which just arrived. The 5520 has pellet type carbon filters which I understand last a bit longer than the other types. We use that in the
...Beneficial_Part5226 in r/AirPurifiers
February 11, 2026 1:31 PM
1
One big filter vs multiple small filters in a larger room?
Don't bother with the A231. Any of these tiny filters are really just a waste of time for room sized filtering - from any brand. The C909 is nice and was (still?) on sale from costco. The Winix C545 was also on sale refurbished for $59 on Winix direct but is sold out. The higher AHAM rated C610 is c
...AirFlavoredLemon in r/AirPurifiers
April 9, 2026 6:54 PM
1
Which one of these purifiers would you recommend
I would match all three for ease of filter stocking and replacement. I don't know any of these filters personally except the C545. The C545 is ... wasn't on my recommend list. I own, probably at least 3 across various apts and homes? My issue with it, is it basically was advertised as a replacement
...AirFlavoredLemon in r/AirPurifiers
February 12, 2026 10:18 AM
1