Winix - C610

Happy with my Winix. I look at the app every now and then and see that it ramps up after cooking, seems to be working well.

Winix C610. Bought in Canada Costco, but here’s the [US link](https://www.costco.com/winix-c610-4-stage-true-hepa-air-purifier-with-wi-fi-and-additional-filter.product.4000295784.html?COSTID=iosapp_deeplink_25.4.5&TRACKING=NO&sh=true&nf=true) for it.

We use Winix from Costco but turn off the plasma wave. They now have a child lock feature too which is nice. Honestly we rarely have dust in our house and it’s such a noticeable difference when we travel or visit family so I truly think they work so well! They’re around $100 but we have multiple throughout the house. We used to have a larger one but tbh it was much louder than the multiple small ones.

C610. The only thing is that’s a “Costco” model I believe. I think Costco always sells things slightly different than what the manufacturer sells elsewhere (sometimes it means it just comes with an extra filter or one less feature etc) but I’m pretty sure you’ll only find it at Costco with those model numbers!

Winix c610 at costco for $99 Which includes extra filter. So you are good for 2 years

I'm on mobile browser so it's hard to link so I'll just tell ya! We have the C535 for all the common areas, and the C610 in all our bedrooms. Then for the bathrooms and pantry we use the LEVOIT Mini Cores (I like these for small areas, but I have to change the filters more frequently.) 

Been a big fan of Winix and there are some good air quality test videos on YouTube. Some bad ones too such as some weirdo talking about ozone, but another video proved they do not generate measurable ozone.  I have 4 different models. Costco had a great deal on the C610 a few months ago, $100 and you got 2 filters and 2 year warranty. The cylinder style seem to move the most air, but the box ones especially with the granular carbon filters seem to be the best. The C610 has a thin carbon layer, but seems to work very well. 

I have both. The 610 is smaller and looks better but the 5500 is quieter and has a better sounding hum and is easier to clean the pre filter

I like the Winix refurbs, they look new to me. https://winixstaging.mystagingwebsite.com/product-category/certified-refurbished-air-purifiers/

I have a Winix air purifier that I bought from Costco (Winix C610) it’s sort of loud when running at full full speed, but when it is on it’s second highest setting (still moving quite a lot of air) it is so quiet that we keep getting up to check that it’s on. We keep it on at all times and move it to the main room when we have guests over. I can’t recommend Winix enough, my family has used their air purifiers for years.

For small bedrooms, get small sized individual units. Look at Winix or Blue Air. Most manufacturers will state capacity in sq ft, btw. For master and living - look at Dyson or IQAir. Expensive options but they do a great job plus have fantastic apps that make using them a breeze. For the open space...man, I am going to learn with you what beast can handle that type of volume :)

We put a Winix C-610 next to our German Shepherd’s crate and set the schedule for it to run on Turbo for an hour before we wake up and for an hour before we come home. That helps a lot in our house with pet odor.

Have a GSD and a Lab/GSD mix so I can feel your pain :). Are you looking to purify just one space in the house or multiple spaces? That should be a factor in your decision. FWIW, we have a Shark NeverChage, a Winix C-610, and an IQAir Atem in our living/kitchen space of about 1400 sq ft. Shark runs 24/7 and sits closer to kitchen. Winix sits next to GSD crate and runs on Turbo mode for 2-3 hours daily. IQAir sits behind the couch, next to other crate, and runs as needed. Those 3 work together to keep our air best and free of pet odors.

Freestanding air purifiers can't overcome walls and doors. You need one for each room or area. **Therefore we need each room's length x width x height to calculate Clean Air Delivery Rates (CADRs).** As for your questions: 1. Winix is good, but not the best. I'd generally say Coway is the best in terms of quality for consumer-grade units. 2. PlasmaWave is Winix's name for their bipolar ion generator. It can be turned on or off. PlasmaWave (in practice) seems to enhance Pollen CADR. I believe Levoit's PlasmaPro is also generates positive and negative ions. 3. HEPA vs. "True" HEPA is mostly marketing. What *is* important is listing the appropriate standard, the filter class (where applicable, like H13 or H14), and the filtration efficiency % at a particular particle size or sizes. 4. DIY Corsi-Rosenthal boxes can work very well, which typically use MERV 13 furnace filters. MERV 13 is a lower filtration efficiency than HEPA, meaning it captures fewer particles of certain sizes on a single pass. But... since MERV 13 is less restrictive, it can achieve more passes through the filter media faster which can result in higher CADRs. (Assuming sufficient airflow.) If you wanted to build a C-R box, I would recommend doing so with PC fans. Drawback: most C-R box configurations do not specify fine mesh pre-filters. Without these, the MERV filter media can clog sooner with coarse particulates such as visible dust and hair. 5. "Level of filter": I assume you mean filtration efficiency of a mechanical filter. Mold, fungus, pollen, and viruses are bioaerosols. They can be captured with HEPA, EPA, or certain MERV filters (generally MERV 13 and higher). EPA and MERV 13 filters are a lower filtration efficiency than HEPA, so it will allow more particles through on a single pass. But EPA and MERV 13 can achieve more filter passes and higher CADRs than HEPA with proper airflow for less money. 6. As for secondhand purifiers, that's up to you. Sometimes you can find items that are barely used. But it's also possible purifiers were used in highly polluted environments (e.g., lots of mold or post-fire remediation) or could have bed bugs inside. 7. The blue box looks like an air scrubber. These are meant for more challenging and large environments, e.g. during renovation, fire remediation, or serious mold remediation. Air scrubbers tend to be quite loud.

No, those CADRs aren't good. Again, purifiers are sized by a room's length x width x height. We need to know this to ensure you have adequate cleaning power. If you have allergies/health conditions, high pollution levels, etc., the CADRs need to be even higher. $100 is quite low. Fortunately the [Winix C610 is on sale at Costco for $99.99](https://www.costco.com/p/-/winix-c610-4-stage-true-hepa-air-purifier-with-wi-fi-and-additional-filter/4000295784). It comes with an extra filter as well. Sale will last until October 19th. The alternative would be constructing your own Corsi-Rosenthal box with MERV 13/14 furnace filters and PC fans. A guide: [https://itsairborne.com/pc-fan-corsi-rosenthal-guide-a611dabf7e0c?gi=3fdc3007852e](https://itsairborne.com/pc-fan-corsi-rosenthal-guide-a611dabf7e0c?gi=3fdc3007852e)

No, one [Winix C610](https://www.winixamerica.com/product/c610/) wouldn't be enough. The [Winix 5510](https://www.winixamerica.com/product/5510/) would be underpowered too. I would base my choice off of Clean Air Delivery Rates (CADRs), not Air Changes per Hour (ACH). See the AutoModerator comment about the [AHAM 2/3 rule](https://ahamverifide.org/ahams-air-filtration-standards/). For an open 500 sq. ft. space, *minimum* Clean Air Delivery Rates (CADRs) should be **334 CFM**. This assumes the ceiling height is 8 feet. The Winix C610 has CADRs of: * Dust: 252 CFM * Pollen: 262 CFM * Tobacco Smoke: 248 CFM If you want a conventional HEPA purifier, it's going to be hard to find one unit that isn't very expensive and large. A model that is slightly short on dust and smoke CADRs is the [Coway Airmega 400](https://cowaymega.com/products/airmega-400). (The [Coway Airmega ProX](https://cowaymega.com/products/airmega-prox) exceeds min. CADRs, but it's large and very expensive.) The [Alen BreatheSmart 75i product page](https://alen.com/products/alen-breathesmart-75i-air-purifier?variant=13172054491203) claims an averaged (?) CADR of 375 CFM with a big price tag of $799. This is probably using the "Pure" Allergen Collector filter. [Energy Star says the BreatheSmart 75i (version 2.0)](https://www.energystar.gov/productfinder/product/certified-room-air-cleaners/details/3417462) has CADRs of: * Dust: 351 CFM * Pollen: 431 CFM\* * Smoke: 370 CFM \*Likely with the ionizer turned on. Turning the ionizer off will probably decrease Pollen CADR. Alternatively, you can buy multiple smaller purifiers whose combined CADRs meet or exceed the minimum 334 CFM values. Just remember that CADRs for purifiers are for the highest airflow speed/setting only. Lower settings have lower CADRs.

I have a [Winix C909, which is currently on sale from Costco for $159.99](https://www.costco.com/p/-/winix-c909-4-stage-air-purifier-with-wi-fi-plasmawave-technology/100842491). I'm mentioning it because I've measured sound levels (with a smartphone app), the preferrable separate permanent pre-filter, and [cheap filter replacements from The Home Depot](https://www.homedepot.com/p/Winix-True-HEPA-4-Filter-Activated-Carbon-Replacement-Filter-A-115115/202034412). The C909's top airflow speed/setting called "Turbo" is 60 dBA according to the Decibel X Android app. The second highest speed/setting is around 48-49 dBA. If you want to save more money, see the [Winix C610 at Costco for $129.99](https://www.costco.com/p/-/winix-c610-4-stage-true-hepa-air-purifier-with-wi-fi-and-additional-filter/4000295784). It has an integrated pre-filter and lower top Clean Air Delivery Rates (CADRs) than the C909. I believe all Winix models with Wi-Fi capability can be controlled via Alexa. You may want to ask Winix for a definitive answer. Unfortunately brand name purifiers don't have non-proprietary filters. While there are usually third party filters, they may not perform as well as genuine filters.