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Winix C545 4-Stage True HEPA Air Purifier with WiFi and Plasma Wave Technology
$179.99
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Eligible for registries and wish lists
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About this item
Highlights
- • †AHAM Verified® at 360 sq ft.: Also cleans rooms up to 1,740 sq ft in 1 hour (870 sq ft in 30 minutes, 580 sq ft in 20 minutes, 435 sq ft in 15 minutes)
- • The Smarter Air Purifier: Control and monitor your unit anytime from anywhere by instantly accessing your unit with the Winix Smart App through the convenient WiFi feature
- • Washable Fine Mesh Pre-Filter: The first line of defense against the largest airborne particles found indoors
- • Activated Carbon Filter: Reduces VOCs and household odors from cooking, pets, and smoke. It is designed to catch airborne particles found indoors, which also helps prolong the True HEPA Filter life
- • True HEPA Filter: Winix True HEPA Captures 99.97%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.3 microns
- • PlasmaWave® Air Cleaning Technology: May help to reduce the presence of airborne impurities
- • 2 Year Filter Supply: Includes 2 True HEPA replacement filters and 8 Activated Carbon Filters
- • Smart Sensors + Auto Mode: Built-in air quality sensor measures and adjusts fan speed in real-time
- • Air Quality Indicator: Visual indicator displays real-time air quality in the room with LED lights
- • Ultra-Quiet: Nearly silent on slowest speed (27 dB)
- • Light Automated Sleep Mode: Unit automatically activates its quiet, energy-efficient Sleep Mode when room is darkened and returns to Auto Mode in the presence of light
- • Tested and Trusted: This unit is proven dependable and efficient by being AHAM Verifide®, Energy Star Certified, and UL Certified
- • Energy Efficient: Energy Star Certified for low energy consumption, resulting in reduced operating costs
- • Filter Replacement Indicator: When the filters need to be replaced, the Filter Replacement Indicator LED will illuminate
Description
Featuring a 4-stage air purification system, this unit removes 99.97% of airborne particles as small as 0.3 microns in size. Winix’s PlasmaWave® Technology may help to reduce the presence of airborne pollutants, allergens, and impurities. The unit’s built-in Smart Sensors detect and monitor the quality of air in your environment and provides a visual representation of your current air quality. When in Auto Mode, the unit automatically adjusts fan speeds to ensure efficient and cost-effective cleaning. Sleep mode is automatically activated when the room is darkened, providing quiet, energy-efficient operation. The WiFi feature allows you to connect your air purifier to the Winix Smart App and monitor the air quality in your home, control your air purifier, and track filter life.
Dimensions (Overall): 20.5 Inches (H) x 13.7 Inches (W) x 8.4 Inches (D)
Weight: 15 Pounds
Number of Settings: 4
Wattage Required: 62 Watts
Filter Type: True HEPA
Industry or Government Certifications: Energy Star Certified, AHAM Certified, CARB Certified, CADR Certified Rating
Room Size Range: 300-900 sq. ft.
Allergens Captured: Fireplace Smoke, Wood Burning Stove Smoke, Pollen, Odors, Smog, Gases, Pet Dander, Household Dust, Tobacco Smoke
Maximum Filter Life: 12 Months
Power Source: AC Adapter
Battery: No Battery Used
Warranty: 2 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 94577174
UPC: 8809490585576
Item Number (DPCI): 085-00-8681
Origin: Imported
If the item details aren’t accurate or complete, we want to know about it.
Shipping details
Estimated ship dimensions: 11.2 inches length x 15.6 inches width x 23.4 inches height
Estimated ship weight: 15.4 pounds
This item ships in its manufacturer’s packaging, revealing what’s inside. ·
Return details
This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.
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3.3 out of 5 stars with 22 reviews
quality: 3.67 out of 5
value: 3 out of 5
50% would recommend
4 recommendations
5 out of 5 stars
Thumbs up graphic, would recommend
17 October, 2025
Perfect for price point
This purifier is perfect given it's price. It does an amazing job removing particles and cleaning the air.. I keep mine on high...sometimes medium. The motor and quality are good. Getting 2 years of use for this price is worth it. If you expect a purifier at this price to last years and years then you'll be disappointed. Longer lasting purifiers are around $300-$500 range. It's like paying for McDonald's and expecting a gourmet burger. I've had mine 3 years and no issue. It's a great purifier.
4 out of 5 stars
9 October, 2025
originally posted on winixamerica.com
Works well, quiet, a bit flimsy
We own four C-545s in our house and it has become our go-to purifier. It's exceptionally quiet but does a good job of removing dust and especially pet dander and pet hair. The mesh screen pre-filter catches most of the dust meaning we don't have to replace the carbon pre-filter as often. The biggest problem is the clips that hold the front panel in place. They have broken on 3 of our 4 units, meaning the front door hangs off awkwardly. The units still work but we need to use tape to hold the front door in place. Winix should invest in higher-quality clips that don't break so easily!
2 out of 5 stars
Thumbs down graphic, would not recommend
10 September, 2025Verified purchase
Dissapointed shopper
Product appeared to be used! Box was sealed however upon unpacking one of the filters was open and cord was unwrapped. Disappointed in Target that they would not have noted that instead of passing it off as new. If it was a floor model they should have noted it was a floor model!
1 reply from Winix Product Expert team - 1 month ago
Hello, we are so sorry to hear about this experience. We do not want you to have any used filters! Please reach out to info@winixinc.com so our wonderful customer service team can assist you.
5 out of 5 stars
25 August, 2025
originally posted on winixamerica.com
Whisper quite
We have two of these. We have had them for over two years with no issues at all. They are whisper quite and work well.
1 out of 5 stars
25 August, 2025
originally posted on winixamerica.com
Motor started to fail
Yeah, same problem as everyone else - the motor started making a horrible noise between one and two years in. It’s a shame, because it worked very well before that.
1 out of 5 stars
24 August, 2025
originally posted on winixamerica.com
MOTORS ARE JUNK! beware 2 units 2 years useless
Purifiers will work fine until around the 2yr mark then the fan motors will peter out and the unit is useless this is a major issue for me on two units I have purchased! sucks spending this kind of money for 2yrs of usage . I will be shopping for another brand
1 out of 5 stars
9 August, 2025
originally posted on winixamerica.com
Start high-pitching noise a few hours after turnin
Start high-pitching noise a few hours after turning on. Disappointed.
5 out of 5 stars
17 July, 2025
originally posted on winixamerica.com
Highly recommend
I have 5 of these throughout my house. Only ever had an issue with is the app. These work great!
5 out of 5 stars
Thumbs up graphic, would recommend
12 July, 2025
5 year old C545 still going strong
I have had this model for over 5 years. Never had any of the issues others have claimed. Regularly replaced filters, cleaned the unit, and took care to not break pieces off of it. The auto setting is nice as it only spins the up when it detects bad air quality so most its operating time is spent in quiet mode. Even at night if the fan is on a higher speed it isn't loud enough to disturb sleep. I have a golden retriever and two cats so this unit has been tested against some of the worst dander and particles you can have in a home. The washable prefilter is good as it catches a lot of pet hair and larger particles to keep the Hepa filter and Charcoal filters life span longer. Just requires regular cleaning so the fan performance isn't affected. Definitely recommend for a bedroom or office or apartment.
5 out of 5 stars
24 June, 2025
originally posted on winixamerica.com
Dependable
My Winix Air Purifier is 4 years old and I've never had a problem with it, or any kind of rattling.
1 out of 5 stars
Thumbs down graphic, would not recommend
21 June, 2025Verified purchase
Dirty used air purifier
Target sent me, online ordered, a dirty filthy used air purifier with no packaging and sold it AS NEW. Disgusting will be returning and not shopping at Target ever again.
3 out of 5 stars
19 May, 2025
originally posted on winixamerica.com
Why the noise?
I bought this a couple years ago and it was perfect in our bedroom. Ran 24/7 on speed 3 nice and quiet. All of a sudden just last week it woke me up with and rattling/clunking noise. Not real loud but noticeable. I think it is the motor because when I switch speeds the noise changes too. I expected many more years of QUIET service. I have serviced it regularly and kept it clean.
2 out of 5 stars
15 May, 2025
originally posted on winixamerica.com
Whine o’clock
Worked great for 2 years, then one is the pieces holding on the cover snapped off. Now it makes a very high pitched whine when we use it.
2 out of 5 stars
12 May, 2025
originally posted on winixamerica.com
High Pitched Whine - Poor User Experience
Loud. And I don't mean the sound of airflow. As is typical of many Winix air purifiers, there is a high pitched bearing whine on the higher speeds. This is awful and drives us nuts. To make matters worse, the first several speeds are all virtually the same with little variation in actual speed. To actually get some cleaning done, you need to use the highest speed - and then you get the screaming bearing whine. Also, the C545 units have a design flaw where the clips which fasten the front cover into place are easily broken simply by putting the cover back on. You need to always look from above to make sure that the peg on the cover is going between the two clips, and not to the side of the clips, otherwise they will get snapped off. This makes cleaning the filters more fun. Also, the buttons on the front are impossible to read as they don't have any coloring, so the unit is rather awkward to use. Another complaint, the app is extremely aggressive with sending you ads and spam, and you cannot disable them. If you don't use the app for a period of a few weeks, you will be punished by having all of your air purifiers de-registered from your Winix account, and the only way to get them working with the app again is to do a complete factory reset and register them from scratch. I do not believe that Winix is a company that respects their customers or has any great concerns about putting out quality products.
5 out of 5 stars
21 April, 2025
originally posted on winixamerica.com
Love It
I've had my C545 for over 2 years and no problems. Love the app and it cleans the air in the room very well. Including the auto feature where if it detect anything in the air it changes status and when air is clean go goes back to blue and/or shuts off. Great product.
1 out of 5 stars
23 March, 2025
originally posted on winixamerica.com
Motor Screeches After a Year
Cleans air thoroughly, has high CADR rating. However, motor buzzes at a high pitch after a year of use. Extremely sad because we really like our WINIX and got many replacement filters.
1 out of 5 stars
20 March, 2025
originally posted on winixamerica.com
not recommended.
I work well for a while, then the app no longer connects, I delete it from my Devices and it can't be added again.
5 out of 5 stars
17 March, 2025
originally posted on winixamerica.com
Excellent air cleaner
My husband brought this for me 3 months ago. I burn things on the stove all the time. This unit keeps the air clean and takes away the orders.
5 out of 5 stars
3 January, 2025
originally posted on winixamerica.com
Effective and Reliable Air Purifier.
We have two of these (living room & bedroom) running on high 24/7. We have radiant heat so we don't have any household filtration so these, along with a few little air purifiers, are all we have to manage our indoor air quality. Within a week of buying these we could physically see an improvement and my wife's asthma improved significantly. We've been running these about 13 months non-stop and they do a great job; I clean the pre filters weekly with a vacuum and I had to replace the primary and secondary filters after 9 months. They're a little noisy on high but not obtrusive; on level 3 they're nearly silent. I've never had any issues with either unit and I would highly recommend this product; I'm even planning on purchasing another.
2 out of 5 stars
30 November, 2024
originally posted on winixamerica.com
Stay Away
Great features easy set up though motor rattling when not on low after a year. Bought extra filters so I’ve either wasted my money on them or have to buy another of these things instead of something that’s better made