Winix U300 Signature Large Room Air Cleaner Review

U300 air purifying model made by Winix is a very good choice for an affordable but at the same time remarkably efficient air purifier. Like already stated in previous Winix air purifier models this one also uses patented plasmaWave technology, which is one more good reason to get the Winix U300 model. Thanks to that advanced technology Winix models are very popular among people who suffer from allergies.

Since the air purifier has the power to remove most of the known allergens, it is a recommended product for everyone, not just people with allergic problems. You never know when you may become allergic to some stuff. Some people are born with allergies, but the majority of the people get an allergic reaction later in their lives. To make sure this won’t happen to you I can highly suggest using an air purifier. After all, it is better to prevent than heal.

Winix U300 Features

PlasmaWave Technology should be number one choice why you pick the Winix model, but the true HEPA filter is still the most essential factor in an air purifier. True HEPA filters are doing a great job, and they are number one solution to remove airborne particles from the room.

q? encoding=UTF8&ASIN=B00KXV8KIK&Format= SL250 &ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=apfpi 20&language=en USWinix U300 Signature Large Room Air Cleaner
Feature Info
5-Stage Air Cleaning System Winix’s Signature Series U300 uses a unique 5-Stage Air Cleaning System that features a Washable Pre-Filter, CleanCel Antimicrobial coating, 99.97% efficient True-HEPA Filter, Advanced Odor Control Washable Carbon Filter, and PlasmaWave Technology.
AOC Advanced Odor Control (AOC) Washable Carbon Filter.

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PlasmaWave Technology

All Winix model use this technology, and I must say that many people are skeptic about this technology. Many of them even falsely accuse Winix air purifiers with PlasmaWave technology to produce harmful ozone. That is not true, every device can make ozone, not only air purifiers. The most important at making ozone is at what rate is ozone created, and Winix U300 is not creating hazardous levels of ozone, and it is perfectly safe to use when people are around. Knowing that you can without a fear use advanced technology that will help in removing many unwanted allergens from the air but also will help in eliminating bad smells. Smells like burnt food, gases (created by humans, animals or other devices), smoke (cigarette, fire), pet odors, urine, toilet smell after taking a dump, you name it, Winix U300 will remove it at a rapid rate.

True HEPA Filter

As you know, Winix always uses the best filters in their devices, and that is the case with the true HEPA filter. True HEPA filter in the U300 model is large and powerful to capture all the unwanted pollution from the air in a large room. You can drop this air purifier in a room that is 300 square feet large, and the air purifier will have no problems cleaning it out.

5 Stage Air Filtration System

U300 is picked by many people for its powerful filtration system which includes 5 stages. Trough these 5 stages it is hard for pollution to stay in the air. The two stages I have already mentioned above. The U300 also has a washable pre-filter. The washable prefilter is extremely important because it keeps the rest of the filtration system clean by preventing large particles from going through. Since the prefilter is washable, you won’t have any maintenance cost on it.

CleanCel Antimicrobial coating is another reason why people love U300. By having an antimicrobial coating, the air purifier prevents any microbial build up on the filters or inside the air purifier. Some cheap models can build up microbes over the time. If you for some reason don’t change filters on time then there is a high chance your air purifier will start working against you. So word of advice is to change your filters on time.

Advanced Odor Control Washable Carbon Filter is the third but also important part of the U300. Carbon filter has only one job, and that is to remove bad smells. Together with PlasmaWave Technology, this system works wonders. You could take a dump, and nobody in the house will know it if the air purifier is turned on. That puts this air purifier as an ideal solution for the places with bad smell, ideal for professional kitchen, places with animals or pubs. I wonder how good will U300 be in a pub where people smoke, will it be able to remove smoke. In theory, it should remove all the smoke very fast, but unfortunately, I can not test that because I don’t own a smoking bar.

Fancy Features Everyone Needs

U300 has air quality sensor with auto mode and a visual indicator, you know what this means? It means you turn it on and forget, it works fully automatically. When the air is clean air purifier is not working or is on low speed, and when the pollution rises, then it turns on and cleans the room fast. This is ideal for people who just want to put the device in the room and forget, but at the same time know that someone out there is keeping an eye on the air quality.

Light sensors are also a useful feature of U300. With light sensors, U300 knows when it is night, and if used in the bedroom while you sleep it will use a sleep mode. Sleep mode guarantees you won’t be bothered by air purifier and that your sleep will be deep and refreshing.

Winix U300 comes with the remote controller in case you want to change any settings you can do it while you lie on the couch watching TV.

Winix U300 Replacement Filter

You should always buy original filters which will guarantee the absolute performance of an air purifier. With Winix U300 model you really need to make sure you are buying original filter because of many properties. U300 filters have an antimicrobial coat, and that makes them unique on the market.

Replacing a filter in U300 model is very easy because the filters are in the cassette and all you need to do is remove the old filter cassette and put in the new one, all that can be done in less than 5 minutes.

q? encoding=UTF8&ASIN=B00ESJDGE6&Format= SL250 &ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=apfpi 20&language=en USWinix One Year Ultimate Washable Filter Cassette

Feature Info
Breathe Easy All Year Long
Every Winix Air Purifier comes with a 1 year supply of genuine Winix filters. Winix Air Purifiers are equipped with a check filter indicator that will let you know when it is times to change filters.
Winix Genuine True HEPA Filter
True HEPA Filters capture 99.97% of particles and impurities as small as 0.3 microns. Including: pollen, mold spores, dust, pet hair and dander, other allergens and cigarette smoke.

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  • Winix Quality
  • Patented Filtration Technology (PlasmaWave Technology)
  • Easy Filter Replacement
  • Visual Air Quality Indicator
  • Air Quality Sensors
  • Light Sensors for Sleep Mode
  • Durable Material
  • Energy Star Certificate
  • Ideal for People Who Suffer from Allergies
  • Perfect for Room as large as 300 Square Feet


  • Air purifier price is affordable, but the maintenance cost is high. You will need to buy a new filter every 12 months and filter costs almost as 50% of the device. But because of that fact, Winix guarantees quality.


Without any doubts, Winix U300 air purifier is one of the top models in Winix collection. With the advanced 5 stage air filtration, this device guarantees fast and trough air filtration. Allergens and odors will be removed from the air at fast speed. That feature puts the U300 model amongst the ones mostly used by people who suffer from allergies. As always I highly recommend such devices to everyone else because after all, they have advanced features that guarantee air quality.

I am still undecided if this air purifier is better at removing airborne particles or bad odor. Powerful odor eliminating system is an ideal choice for people who are looking for odor removing air purifier to put in their kitchen, cellar, toilet, bathroom or any other place that stinks. Winix also gives a great warranty on their products. With Winix U300 and its advanced air filtration system, you can not get wrong. When you buy this air purifier remember to come back and leave an honest comment about it and what you think of its performance.

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