6 Best Ozone Free Air Purifier (Mechanical) in 2023

Winix 5500-2 is a reliable, ozone-free air purifier with a little bit of a caveat (more on this later). It only costs a fraction of some models on this list, with all the desirable features you need. The sleek black body is not overly bulky, so you may have difficulty finding a placement. Movability is good as you can effortlessly grab onto the back handle for multi-location purifying. Overall, a very well-built machine with no signs of poor alignment or off-gassing.

Modern yet highly functional. Winix 5500-2 is packed with useful features starting with the front air quality indicator. The light indicator color will change to blue when the air is clean, yellow when moderate, and red when air quality is bad. The top controls are straightforward to use with standard 4 fan speeds, auto, and sleep mode. Timer helps manage the runtime before you leave for work or out of town. The filter replacement indicator alert you to change the filter accordingly. The remote control is the final piece of the puzzle that enhances Winix's easy operation.

Winix 5500-2 is a CARB compliant air purifier. When air is drawn in from the sides, the pre-filter blocks dust, debris, and other larger contaminants from passing through. The True HEPA filter will trap 99.97% of microscopic particles in the air as small as 0.3 microns, such as mold, pollen, pet dander, germs, and bacteria. The Advanced Granular Carbon filter adsorbs smoke fumes and odors from common culprits e.g. cigarettes, cooking, pet, VOCs, asbestos, and radon. The optional PlasmaWave produces Hydroxyls to help break down stubborn allergens. It will emit ozone but at a very low level, under 0.01 ppm. For context, the safety emission level of ozone should be under 0.05 ppm. You can disable the PlasmaWave if you are not comfortable using it.

Classic sides air inlet and back air outlet setup. Winix 5500-2 delivers a decent 360 square footage covering a bedroom, living room, storeroom, kitchen, basement, garage, and playroom. The airflow delivery rate is rated at 226 cfm output which tallies with the CADR at 243 cfm (dust), 246 cfm (pollen), and 232 cfm (smoke). For those with severe allergies, particularly during hay fever season, run it in turbo mode for at least a couple of hours. Otherwise, leave it in auto mode, and Winix 5500-2 will only run at a higher speed when it detects a drop in nearby air quality.

Noise level is quiet at only 26.6 decibels when running at the lowest speed and audible noise at 60+ decibels at turbo speed. For night use, sleep mode will activate automatically when the room is pitch black, thanks to the built-in light sensor. As an Energy Star model, power consumption is fairly consistent between 5 to 90 watts per hour. You will not be hit by a high electricity bill even on daily use.

So what's the catch with Winix 5500-2 air purifier? Nothing much other than the built-in sensor that reacts slowly to air changes. The 80 dollars filter replacement cost is also slightly high for its segment. If you want to be picky, the 2 years warranty period could be longer like some of Winix newer released models. We would still wholeheartedly recommend this to people that need air cleaning at a more reasonable access point.

In short: A highly accessible HEPA air purifier packed with all the premium features you ever needed. Arguably the best ozone-free air purifier for the masses.

Allergic to dust, mites, or anything in between? Coway Airmega 300 air purifier will come to the rescue. A 100% mechanical filtration setup that produces no ozone during purification. Safeguarding the operation is a heat-resistant case that will not release toxic byproducts due to the increased room temperature. The 5 years warranty further solidifies its build quality that guarantees trouble-free ownership.

Featuring a modern metallic-like exterior that looks premium at every angle, Airmega 300 comes with a front circle indicator that changes color according to the room's air quality. The top controls allow you to quickly adjust the 3 fan speeds, activate the smart mode, or set 1, 4, or 8 hours for the air purifier to shut down. A separate Pre-filter and HEPA filter indicator will alert you when the filter needs to be clean or replaced. Last but not least, a dedicated light button that enables/disables the front indicator light.

Airmega 300 has an outstanding 1256 square feet of room space at 2 air changes per hour. For asthmatic persons with sensitive lungs, you can increase the air changes to 4 or every 15 minutes at the cost of smaller 628 square footage. CADR reflects well on the strong airflow with a high output of 260 cfm. Great for large room sizes like office, bedroom, basement, living room, or an entire floor of a single apartment with doors wide open. Auto mode automatically adjusts the fan speed to high when a high concentration level of pollutants is detected. Otherwise, it will maintain the fan speed at low.

Airmega 300 air purifier has a slightly different setup than the rest. It uses 2 washable pre-filter to trap contaminants that are coming in from each side of the air inlet. The pre-filter will also protect the dense but fragile HEPA fiber from being damaged by large particles. The Max2 HEPA filter traps 99.97% of airborne contaminants down to 0.3 microns, like mold, pollen, dust mites, pet dander, germs, and bacteria. For smoke particles, you have an activated carbon filter to absorb chemical fumes like paint, food, tobacco smoke, and outdoor pollution. The entire air filtration is done mechanically. Therefore, you will not find a single trace of ozone emission.

A certified Energy-star model, Coway Airmega 300 power consumption varies from 6 to 57 watts depending on the fan speed. The stronger the airflow output, the more energy it will consume. Continue on. The 22-decibel noise level is subtle when running at the lowest speed. Suitable for night use as it will run quietly while you sleep. Once you move up the speed, it will generate white noise that can be loud for some people. To save you all the trouble, leave it in sleep mode when you're trying to get some shut eyes.

While Coway Airmega 300 is an awesome mechanical air purifier with strong filtration performance, its 500+ price tag is not. There are cheaper ozone-safe air purifiers out there that could do a similar job. The high filter cost is another recurring theme you will have to bear annually. Lastly, you can top up a little more for the Wi-Fi S variant that adds auto sleep mode and a real-time filter change indicator. The choice is yours.

In short: A proven, highly functional mechanical HEPA air purifier with super-wide air-purifying coverage. You do have to pay top dollar for it though.

With so many raving reviews, there is no denying that Honeywell HPA300 True HEPA allergen remover is one of the best ozone-free air purifiers on the market. The iconic black housing body not only looks good in the living room, it doesn't take out a lot of space like some of the bigger units here. You can effortlessly carry it to a different room when needed by grabbing the handle. Overall, the build quality is tight, with no signs of toxic off-gassing detected. The long 5 years is a good testimonial to that.

Honeywell HPA300 top controls are easy to use even though there is not much option to tinker with. You have the standard power button and the option to choose different cleaning modes such as Allergen, General Clean, Germ, and Turbo mode. For the majority of people, just stick it with general clean mode for normal use and Germ mode during allergy season. The useful but limited timer can be preset to shut down the air purifier, and the dimmer button allows brightness adjustment. There are also 2 LED electronic filter change reminders; one for the True HEPA and the other for the carbon pre-filter. A well, underappreciated feature.

Honeywell HPA300 True HEPA allergen remover is 100 percent ozone-free with its classic 3-stage filtration. The multi-function carbon pre-filter traps dust, hair, smoke, and odors that pass through. Next, the True HEPA filter capture 99.97% of the airborne particulates, including pet dander, mold, mildew, pollen, and germs. At turbo speed, Honeywell HPA300 air cleaner can cover a wide 465 square footage. Ideal for large spaces like living room, bedroom basement, tandem garage, playroom, and single-room office. CADR reflects well too, with a high output of 320 cfm for dust, 300 cfm for pollen, and 300 cfm for smoke. The multi-cleaning mode is highly suited for a person suffering from a cold, cough, and breathing difficulty due to bad air.

Honeywell HPA300 abundance of airflow output does generate a fair bit of noise. However, you can always keep it down by running at the lowest speed (germ mode). Energy usage is good despite the lack of Auto mode. Just pick a mode you want, and the air purifier will operate efficiently throughout the day.

A good mechanical machine but lacks practical features to enhance its usability. You will not find auto mode, sleep mode, digital display, or air quality indicator. We are not the biggest fan of the carbon pre-filter, which uses a thinner carbon sheet. You would be better off with a dedicated carbon filter dealing smoke particles. Those are the few minor tradeoffs that come with HPA300. Still perfectly liveable for everyday use.

In short: A well-loved HEPA air purifier powered by 100% mechanical filtration. Go with this if you don't mind skipping out on the ionizer.

An ozone-free, medical-grade air purifier that we can vouch for. Medify MA-15 HEPA air purifier is the entry-level variant that comes at a small 9.7 inches in diameter and only 15.5 inches in height. The 6.6 pounds weight, including 6 filters, does not hinder its portability. You can carry it around for room to room purifying or just stick to one spot with the worst air quality condition.

Available in white, silver, and black, the bottom-to-top air circulation setup works very well in a small air purifier. The same goes for usability, where the entire operation is very easy to use. You have the 3 adjustable fan speeds, timer, and filter change indicator after 2,500 hours of run time or every 3 to 4 months. There is also a child lock feature that locks the control from any adjustment until you disable it. The final highlight of Medify MA-15 is the lifetime warranty that covers all key component parts as long as the filter is replaced on time.

Double effort, double result. Medify Air MA-15 air purifier uses a Medical-grade mechanical filtration that produces zero ozone. Air drawn in you first be filtered by the dual pre-filter. With dust and other large particles blocked from passing through, the dual H13 true HEPA filter can focus on removing 99.9% of allergens as small as 0.1 microns, including mold, pollen, bacteria, and viruses. Finally, the dual carbon filter with carbon pellets absorbs smoke and smelly odors coming from household products, pets, cooking, and cigarette.

Living healthy with constant clean air. Despite its low selling price, Medify MA-15 has a strong output of 330 square feet at 2 air changes per hour or every 30 minutes. Suitable for an allergenic person. The official clean air delivery rate is equally impressive at 150 cfm for dust, pollen, and smoke. Given its smaller body framework, Medify MA-15 will fit well in a studio, dorm, small office, kitchen, bedroom, walk-in wardrobe, or any place with limited space.

Noise level favor Medify MA-15 air purifier at only 35 dB during low speed all the way up to 51 dBA. It will run silently in the background while you sleep soundly at night. Power consumption is 18 wattages per hour but could vary depending on the fan speed Medify is running. It will not be a big hit on the utility bill, even in a worst-case scenario.

Medify MA-15 HEPA air purifiers might excel in most areas, but the high filter replacement cost could counter it all. You will have to pay around 70-140 dollars yearly depending on how bad is the indoor air quality. The lack of autonomous mode is also a big missed, but that's the reality of air purifiers at this price range. If you want guaranteed safe, clean air at a compact form factor, you can't go wrong with this model.

In short: An affordable, compact, and safe medical-grade HEPA air purifier for everyday use. The golden ratio for size and performance.

Some air purifiers emit byproducts like ozone; IQAir HealthPro Plus does the opposite by removing harmful ozone in the air. It is certified by the International Association of Air Cleaner Manufacturers (IAACM). This iconic, Swiss-made air purifier stands out from the crowd with its gigantic ABS plastic housing body. While there is no denying its weightiness, you can still move it around with the help of the 4 durable casters. Build quality is at another level where everything feels premium on touch. The long warranty is the perfect assurance of its reliability even in the harshest condition.

IQAir HealthPro Plus works straight out of the box. The top controls are well-defined, with a built-in digital display and an advanced programmable timer. You can set a specific day and speed to run or shut down the air purifier. There is also an Intelligent Filter Life Monitor that will accurately reflect the filter usage life. You only need to replace the filter when it is completely worn out. Remote control is included that lets you access most functions at a comfortable distance.

An absolute knockout from IQAir. HealthPro Plus has a highly adjustable 6 fan speed that outputs between 41 to 300 cfm of airflow. With its 3D UltraSeal triple-seal technology, it can reach up to 1098 square feet of space. Ideal for large room sizes like living room, kitchen, basement, and garage. It is also highly suited for a nursery home, office, studio, whole house, and apartment.

IQAir HealthPro Plus's outstanding airflow is well complemented by the world's best filtration. The outer PreMax Filter traps large particles to protect the inner filter from getting clogged. The V5-Cell Granular activated Carbon filter with Pelletized chemisorption absorbs smoke and odors from cooking, pets, cigarette, VOCs, CO, formaldehyde, asbestos, and radon. In fact, it can even remove about 95 percent of the ozone in the air. The last stage HyperHEPA filter captures biological pollutants as small as 0.003 microns, e.g. mold, bacteria, and viruses, before releasing the clean air back out. A normal HEPA filter simply does not have the caliber to do so.

Depending on the fan speed, the noise level can be subtle, between 25 to 59 dB. This is partly contributed by the backward curved fan-in-center centrifugal and double-walled housing. There are also a sound deflector, an EvenFlow Diffuser, and a rubber suspension pad to reduce the motor vibration noise. Power output is reasonable at around 27 to 215 watts based on the usage volume. Again, the scheduler/ timer can help manage energy consumption.

The biggest drawback with IQAir HealthPro is the cost. At around 899 dollars, it is 3 times more expensive than a standard HEPA air purifier. Filter replacement cost is also on the high side despite the long 2 years for V5-Cell and 4 years lifespan for HyperHEPA Filter. The lack of auto mode is disappointing at this price point, but you always have the advanced scheduler to balance things out. IQAir is the best option available if you can give it to the size and price.

In short: An expensive but powerful air purifier that can remove airborne particles 100 times smaller than a HEPA filter could. All this is achieved purely on mechanical filtration.

An affordable, ozone-free air purifier with an H13 HEPA filter. Levoit Core 300 ticks all the right boxes and only costs you less than 100 dollars. This award-winning, South California designed air purifier has the right balance between modern exterior and portability. Available in black or white, the 8.7 x 14.2 x 8.7 inches dimension will blend into your home decor instantaneously. You can place it by the bedside, work desk, TV cabinet, or shelf without being obstructive. The light 8.8 lb weight makes it the ideal travel companion or room to room purifying option.

Operating Levoit Core 300 air purifier could not be any easier. You have the simple 3 fan speed control plus sleep mode for night use. Supporting that are the 3 preset timers and filter change indicator that reminds you to replace the filter after an interval. Another hidden but well-appreciated feature is the child lock feature. Simply hold on to the button, and the controls will be locked from children meddling with the setting. On the whole, build quality is up there with the best despite its low price range. You can safely leave it running 24x7 without a care in the world.

LEVOIT Core 300 filtration could not be any simpler. The initial pre-filter will trap large impurities in the air like dust, lint, hair and protect the inner HEPA filter. The shielded H13 True HEPA filter removes 99.97% of fine particles as small as 0.3 micrometers. The last-stage granular activated carbon filter neutralizes smoke, chemical, and odors. For even better filtration, upgrade to the optional Pet Allergy Filter that is effective against pet odors and diapers. Otherwise, choose the Toxin Absorber Filter that targets air pollution like wildfire smoke, vehicle exhaust, and VOCs. For biological pollutants, choose MB Filter that neutralizes mold, bacteria and halts their growth.

Levoit Core 300 is a 100% ozone-free, CA PROP 65 complaint model without using an ionizer and UV technology. The VortexAir cyclonic airflow system delivers a swift 12 minutes of air circulation. It can reach a room space of 219 square footage at 5 air changes per hour. Highly suited for a hypersensitive or asthmatic person. Works best in the bedroom, nursery home, kitchen, and small apartment. The clean air delivery rate (CADR) is rated at 140 cfm for dust, 145 cfm for pollen, and 141 cfm for smoke. Not the greatest, but for close-range use, it will be fine.

An Energy Star certified air purifier powered by QuietKEAP technology with an internal shock pad. It helps absorbs noise, increases abrasion resistance, and extends the motor usage life. At low speed, Levoit Core 300 only outputs a whispering 24 dB noise that will not disturb your sleep. Even running at high speed with a max 54 dB noise is still reasonable for everyday use. Power consumption averages 45 watts, depending on the operational hours. Suitable for all-day operations without the high cost incurred.

At such a low price, something has to give in, and thankfully is not the build quality. The entry-level Levoit Core 300 omitted convenience features such as auto mode, sensor, and air quality indicator. The relatively small filters will have to be replaced every 6 to 8 months. Filtration-wise, it is on the lower tier but not to the extent that it is unusable. Simply put, the price more than justifies the performance you will get out of it.

In short: The best affordable air purifier under 100 with an H13 HEPA filter. A good starter machine to kickstart your air cleaning journey.