15 Best Air Purifiers with Negative Ions
for March 2023

This is a great little gadget that can provide cleaner air for dorms, and for people with allergies, asthma, and sinus problems. You may not notice a big difference when you first start using it, but over time, you'll definitely notice cleaner and fresher air. The Clarifion has a filterless design that passes air through a negative ion generator that generates millions of negative ions per second. That releases negative ions in the air to wipe out most allergens, odors, smoke, chemicals, mists, and bacteria. The Clarifion is unobtrusive, it won't take up much space, and it packs a big punch for such a small device. If you have allergies or asthma, it is definitely worth a buy.

The AirTamer A310PMB is just the right size for traveling and is light and portable enough to carry in a tote bag or suitcase. Due to its small size, we were disappointed that the A310PMB doesn't produce enough negative ions to clean a room; we recommend pairing it with a more powerful air purifier like the $280 AirTamer A320PMB in larger rooms. Also, the electrophorus ionization technology it uses to create a negative-ion sphere isn't as effective at removing larger airborne pollutants, such as VOCs, as some competitors' ionizers. Still, it did a great job of neutralizing dust from the air and was the only air purifier we tested that got by without an ionizer. The air it produces looks clean and fresh, and it can help heavy smokers breathe easier with this simple device.

I have been looking for this product for about half a year. I really love it. I got lots of compliments. It really does wonders to my allergy & asthma. Highly recommended.

The Ivation 5-in-1 Air Purifier & Ozone Generator offers some of the strongest performance among affordable, all-in-one purifiers that we tested. It does a great job of removing small particles, odors, and viruses from actual room air. The silver ion generator seems effective, but we didn't notice much in the way of odor reduction during the tests. The dust filter is big, though, and the unit does a fine job of circulating the air. The ionizer also releases cyanogen ions, which may help counteract odors, and the unit also has a light that doubles as a nightlight. Unfortunately, this air purification system is noisy and could use a larger, more responsive LED display on its control panel.

The Clarifion Negative Ion Generator Travel Air Purifier from 3M is the cheapest portable air purifier we tested, and it does a good job of removing particulates, mold spores, and bacteria. It comes with handy LED indicators that let you know when the purifier is on, in "midair," or in maintenance mode. The one caveat is that it's not as good at removing larger particles of dust, smoke, or dander from a room. It's also not super quiet, and it can get plenty warm when in use.

This air purifier puts out a good amount of negative ions, but we'd give the HAPHID's performance a slight edge over that of the AeraMax 500 because it fills a room more evenly (especially at the top), and has a more even-looking glow (the AeraMax's light doesn't look as even). In addition, the HAPIID produces ions more efficiently than the AeraMax. According to the company, the HAPIID can produce up to 32 million ions per second, compared to 7 million ions per second from AeraMax, which is 2,500 times more powerful. The AeraMax puts out a lot of ions, but it only covers a relatively small area, so you'll likely have to set it up multiple rows back to keep from blocking the fan. The HAPIID doesn't put out that much negative ion, but it does cover a larger area, so you won't need to set up as many rows back. The AeraMax also sounds a bit noisier than the HAPIID during our tests, though it may be because the AeraMax needs to be turned up louder in order to fill the room, while the HAPIID is able to be turned down lower. Like many of our other picks, the HAPIID comes with its purifier's instruction manual in Chinese, so you'll need Google Translate or an online translation service to read chapter 3 (which is about the purifier's operation).

The Ionbox is a surprisingly compact and powerful air purifier. It produces loads of negative ions and it's quiet, too. It's also easy to use, with a straightforward menu system, and it takes up almost no room on your countertop. The Ionbox's biggest advantage is its multi- voltage power supply, which lets you use yours anywhere in the world without extra purchase of a converter. The Ionbox is also versatile; it has a USB port so you can connect it directly to a USB outlet in your computer, laptop, car, or RV. Unfortunately, it's a little pricey. It's also not as effective at clearing the air as some other purifiers we tested, but we expect that to be fixed with a software update, and it's a fairly small and portable purifier.

The AirTamer A310 is a great way to protect yourself from poor air quality, whether you're outdoors or inside your home. It produces up to 3 million ions per second, which are powerful enough to punch through common pollutants like pollen, smoke, and pet dander. This negative-ion generator is small enough to fit into a purse, backpack, or pocket, and its metal case and handle make it easy to transport. The A310 also has a fast-charge USB port, which took 2 hours and 16 minutes to charge fully using a 20-watt power adapter. Its battery charge lasted 165 hours in our tests, which is an impressive number for a device this size. Its price is comparable to the competition, but it has more features and a longer battery life.

First, the AirTamer A320 delivers on its promises - healthy negative ions, superior purification, superior filtration, superior filtration, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification, superior filtration, and the superior purification. However, that's an awful lot of superlatives, so let's break that down a bit. On the negative ions front, the AirTamer A320 emits a healthy amount of negative ions, and because negative ions help fight off viruses and bacteria, you're breathing cleaner, healthier, safer air. The A320 is powered by a rechargeable lithium-ion battery that charges in as little as two hours, and we found that it lasted for about 150 hours, which is the longest battery life of any portable air purifier we tested. It automatically shuts off after 15 minutes of no use, and there's an auto-off setting, too, in case you've forgotten to turn it off. The A320 has an OLED screen that's easy to read, and it's simple to set the model to oscillate, so it gives you a good sweep of the air in front of you. The A320 comes with a leather case, a replaceable Negative Ion Emitter Cartridge, a replaceable Conductive Lanyard,

Air Purifier Ailyfu Negative Ion Air Purifier would be better as a nightlight, a car air purifier, or a pet air purifier, because its main feature--the careful development of negative ion--makes it ineffective against other contaminants. It works well without any filter replacement, but one of our testers noted that she didn't like the fan noise, which made sleeping with it in a room difficult. The fan is also set to "high" by default, which could lead to some discomfort if you place it too close to the bed. As an alternative, some buyers have actually reported using the air purifier as nightlights. We also note that most negative ion air purifiers create lots of heat--one of our testers observed his air purifier heating up his bedroom to 96 degrees Fahrenheit. The Air Purifier Ailyfu Negative Ion Air Purifier doesn't have the environment sensor of our top pick, the Dyson Pure Hot + Cool Link, but it's powerful enough to remove small particles, pollen, smoke, and pet dander. If you just want to keep your air clean and free of small particles, this air purifier will work well.

The Clarifion ion generator does an impressive job cleaning the air we breathe, and it does so without emitting ozone or other dangerous chemicals. It's no-frills and very inexpensive. It has 9 settings, ranging from 650,000 to 1,200,000 negative ions per cubic centimeter of room. The default setting is 950,000. The intensity of the ion flow through the small opening on the base was too weak for us to notice any benefits. The manufacturer says the unit is safe for pets, but we didn't test this as we keep our cat in a separate room. It's fairly easy to install (the manufacturer recommends simply hanging it from a window), and the fan is quiet. The unit has a built-in timer with sleep and sleep+ modes, and it has a 60-minute auto shutoff. We tested this purifier out in a 10-by-15-foot bedroom, and by keeping it on overnight for 3 days, we noted significant improvements in the air quality, which felt cleaner, lighter, and fresher.

The IGOKOTI mini air purifier is lightweight and compact, weighing just 10 grams. It also comes with a carrying case. In theory, the IGOKOTI mini air purifier should be portable enough to bring on your next camping trip. However, it's definitely best for indoor use, and the IGOKOTI mini air purifier is not powerful enough to remove all of the harmful particles and gases that can affect your respiratory health.

Negative ions are great for clearing up odors, and at this point, most air purifiers have them, but few have any real control over those ions. The Air Purifier for Home does, which gave us the best air quality of any air purifier we tested. That's thanks to the three-stage filter (activated carbon for odors, zeolite for semi-volatile organic compounds, and anion filter for particulates) and the fact that the purifier releases negative ions into the air (those ions combine with positively-charged particulates and neutralize them). The filter is simple to remove and replace, and it comes with a good instruction booklet. The generator is pretty quiet, and it only needs five minutes to recharge (we tried it in our kitchen and living room without noticing any change.) The Air Purifier for Home is compact and portable, and it works well, though we had a few gripes with the settings: There's no nightlight, it's missing a fan speed control, and the unit doesn't turn on automatically when plugged in, so you have to manually turn it on. Also, the air purifier tends to get surprisingly warm.

We were amazed by the Instant Air Purifier's performance, even in a small apartment. This purifier can filter up to 615 square feet per hour, and it captures more than 99.9 percent of viruses, bacteria, allergens, and pollen. We tested it in a small (145-square-foot) room, and in under 10 minutes it had cleaned the air in that area of allergens and viruses, and it had reduced a smoke smell to nearly nothing. Our second room (a 300-square-foot apartment-size space) needed seven minutes and cleaned the air of over 99.99 percent of viruses, bacteria, pollen, and allergens. However, this purifier is not a good choice for a room used heavily by pets, because it can't remove pet dander from the air. In the 450-square-foot room we used as a test bed, it cleaned the air in two minutes, and it had reduced smoke to near zero. Its fan sounds a lot like a noisy air conditioner (compared to a breezy whisper), and while that's annoying, it's a small price to pay for this level of air quality. The unit is easy to set up and use, and it automatically detects room size and adjusts the air flow accordingly. Its sensor has a range of 5 feet and automatically turns on the unit when you walk into the room. In addition, it has three modes: Auto, Sleep, and Normal. The auto mode keeps the unit running 24/7, and the sleep mode keeps it running when you are asleep. The normal mode cycles between cleaning and rest, and the fan runs in short intervals that remain quiet. Like other Air Purifier 13s, the Instant Air Purifier has a three-year limited warranty.

The AirTamer A315 advanced portable air purifier is a battery-powered unit that creates negative ions that attract and remove harmful pollutants from the air. This purifier is small and can be worn as a pendant or attached to a lanyard for easy movement. Once turned on, it produces a negative ionized field that attaches to pollutants in the air. It then charges them so they're no longer airborne. The purifier is so small that you can carry it in your pocket or attach it to your keyring. While it's widely accepted that negative ions improve air quality, only a handful of portable air purifiers have been created. They include the AirTamer A316, which sells for $99, and the more expensive AirTamer A525, which sells for $179. The AirTamer A315 is definitely the more affordable model, offering the same benefits as the AirTamer A316 and A525 at a much lower price. The A315 offers the same technologies as the A316 and A525, including the patented Electrostatic Purification, a solvent-based filter, and a UVC germicidal light. However, the A315 does miss a couple of features that the A316 and A525 have. Instead of a 30-minute timer, the A315 has a 30-minute power boost feature. This lets you recharge the unit so it automatically powers on when you reach for it again, even though the battery is still on its last charge. This model also lacks an air quality indicator, but it's difficult to find a unit that offers an air quality indicator that doesn't cost much more, and these indicators are notoriously inaccurate. If you're looking for an affordable, portable air purifier that can more than satisfy your needs, the AirTamer A315 is perfect.

You don't have to spend a fortune on an expensive air purifier to get healthy air. This compact, energy-efficient, and quiet air purifier is affordable and does the job, and it's small enough to store in a closet or under your sink. The purifier uses a negative ion generator to attract tiny airborne particles, which can be as small as .01 micron (it can't remove larger particles like dust). The ionic generator emits other ions that attach to them, rendering them harmless, and the carbon filters absorb odors and other pollutants. On the downside, the purifier makes a bit of white noise, and it doesn't come with a remote control, which we found inconvenient.