Air purifiers can be considered yet another unnecessary gadget adding to the clutter in our homes, but if you want to dull strong odors, or try to reduce levels of hayfever-causing pollen indoors, the Molekule Air Pro could actually prove helpful.
I had the pleasure of testing a unit to see how it compared to the best air purifiers on the market. I loved its simple and aesthetically pleasing app, which kept me well informed with real-time and historical indoor air quality readings, but, at this price point, I expected more features. Check out my review below for the full story.
Molekule Air Pro review: price & availability
- List price: $1,014.99 / £799.99
- Available in the US, only available via Amazon in the UK
Listed at $1,014.99 on the official Molekule website, and £799.99 on Amazon, the Air Pro is, without doubt, a premium-priced air purifier. During my time reviewing it, I did see it discounted on the Molekule website and Amazon US, with a sale price of $749.99 initially, further dropping down to $649.99 over the Labor Day sales – so it’s worth keeping an eye out for deals if you’re in the US.
I won’t lie, I winced the first time I became aware of the Molekule Air Pro’s price. I felt sure it must be massively overpriced; but its FDA 510(k) Class II medical device clearance, impressive detection and responsiveness, and informative companion app have changed my tune, albeit begrudgingly.
It’s worth bearing in mind that Molekule recommends that the filters are changed every six months, with replacements costing $174.99 / £159.99, so this cost will need to be factored in, too.
- Value for money score: 4 out of 5
Molekule Air Pro review: specs
| Price | $1,014.99 / £799.99 |
| Dimensions | 10.9 x 10.9 x 23.1 inches / 27.8 x 27.8 x 58.6mm |
| Weight | 22.9lb / 10.4kg |
| Room coverage | Up to 1,000 sq ft / 92.9m² |
| Fan speed | Auto Protect – Standard & Quiet, 1-6 |
| Filters | PECO-HEPA Tri-Power filter |
| Stated filter replacement | Every 6 months |
| Controls | Touch panel / app |
| Additional features | Medical grade polycarbonate outer, and PECO-HEPA filter |
Molekule Air Pro review: design
- Medical grade without the medical aesthetic
- Satisfying opening mechanism
- Touchscreen display
The aesthetics of the Molekule Air Pro are simple yet satisfying. The outer housing is made from substantial-feeling aluminum and medical-grade polycarbonate. A tan-colored faux leather handle is attached at the front and back of the purifier using large metal pins.
As is to be expected of a metal-cased appliance standing at 23 inches / 586mm tall and 11 inches / 278mm wide, the Air Pro weighs a fair bit at 23lbs / 10.4kg. It comes packaged in a large cardboard box with cardboard fitments – and, helpfully, the reusable pull-string bag has handles that make it easier to take out of the box.
The faux leather handle on the unit itself can happily take the Air Pro’s weight, but it still isn’t the easiest to carry around. As a shorter-than-average woman with limited upper body strength, I was able to lift it and carry it up and down stairs, but I certainly didn’t look the most dignified doing it.
The top face of the Air Pro is encircled by slanted vent holes, with a black circular touch display at the center. There are five screens to swipe between. The first is color-coded according to the IAQ (indoor air quality) level: green for good; yellow for moderate; red for bad; and blue for very bad. On the second screen, the levels of VOC (volatile organic compounds), particle matter, carbon dioxide, and relative humidity in the air are detailed. Screen three has Auto Protect mode and five individual fan speeds. The filter condition can be found on the fourth screen and, finally, screen five offers various functions and settings including standby, languages, purifier details, and so on. While this method of operation is efficient, and at first the shiny finish looks nice, after some time you’ll notice fingerprints on the screen and dust and debris on the Air Pro’s shiny surface and inside the vent fins – which is particularly visible over the white.
The display screen automatically goes to sleep when it isn’t being used and takes a touch or two to awaken again. There isn’t a Dark mode on the Air Pro, or the option to turn off the blue light when the fan is operational. This is because it isn’t possible to contain all of the UV-A light from the PECO technology, meaning that there’s a subtle blue glow visible beneath the slanted vent holes.
Access to the filter is simple: gently push down on the top of the air purifier and twist counter-clockwise. This top piece will slowly rise up, allowing you to remove it and reach the filter. To replace it again, I simply needed to align the red lines on the top section and the inside of the main purifier body, before gently pushing and twisting the top section in a clockwise direction to fix it in place again.
Overall, other than being somewhat cumbersome and a bit of a fingerprint and dust magnet, the Air Pro looks and feels premium, which is only fair given its high price.
- Design score: 4.5 out of 5
Molekule Air Pro review: features
- Good range of contaminants detected
- FDA Class II medical device clearance
- Lack of features in the app
The Molekule Air Pro offers a greater number of features than its smaller and lower-priced companion, the Air Mini+. Not only can the Air Pro detect particle matter, but it can also identify, record, and tackle more airborne nasties, including volatile organic compounds (VOCs) such as formaldehyde and benzene. The levels of VOCs, PM1.0, PM2.5, and PM10 are detailed on the display on the top of the purifier and in the Molekule app.
The Molekule app allowed me to view the current air score, and switch between fan modes. These included Auto Protect, which has the option of running on Standard, or Quiet for night-time use, and manual speeds from one to five. It was pretty straightforward to keep an eye on air quality using the daily and weekly history, which is plotted onto a graph using colored lines to indicate the indoor air quality (IAQ) at that time. There are also colored rings below the graph that represent the different air scores, which note the number of minutes or hours the air quality was at that level over the time period.
It’s only a shame that the app settings are quite basic. With much cheaper purifiers such as the AiDot Welov P200 Pro, it’s possible to adjust display brightness, enable screen lock, and set timers and schedules without the use of third-party smart tools such as Alexa. At this price point, I expected a greater number of features. I was happy to see that there were notification settings – until I discovered that this was only to notify when the filter is nearing the end of its life. It would have been helpful to have notifications about changes in air quality, which cheaper purifiers such as the Levoit 300S provide.
One big selling point of the Molekule Air Pro, and a bit of an explanation for the sky-high cost, is the PECO-HEPA Tri-Power filter. Photo Electro Chemical Oxidation (PECO) is Molekule’s patented technology that it states can destroy viruses, bacteria, mold, allergens, VOCs, and more. This technology supposedly creates a powerful chemical reaction, which occurs when the filter is exposed to the built-in UV-A light located in the center of the Air Pro’s body, to destroy organic pollutants. This is teamed with a true HEPA filter, which is said to have a 99.97% particle-capture efficiency rate, along with a layer of carbon to help reduce odors and toxic gases.
The Molekule Air Pro has been granted FDA 510(k) Class II medical device clearance, which means that it’s suitable for medical purposes since it can capture 95% of particulate matter and destroy contaminants by exposing them to UV radiation. It is caveated on the Molekule website that this is when the purifier is operated in Standard Auto mode, or on at least fan speed two when using manual settings.
The Air Pro has an impressive working range, capable of purifying spaces up to 1,000 sq ft / 93 sq meters. This is the biggest range we’ve seen in all of the air purifiers we’ve tested to date.
- Features score: 4 out of 5
Molekule Air Pro review: performance
- Cleared odors quickly
- Some app glitches
- Slow but steady air purification
Setting up the Molekule Air Pro was relatively straightforward, I simply needed to unwind the power cable and plug it in, following the instructions on the Molekule app to get it connected. It took a couple of attempts to connect the purifier to the app, and then further attempts to get the purifier connected to Wi-Fi since it kept getting stuck, leading me to have to restart the app multiple times. It got there eventually, though.
It’s curious that an air purifier at this price doesn’t have Bluetooth connectivity as well as Wi-Fi. The AiDot Welov P200 Pro is over $800 cheaper than the Air Pro, and yet it arrives with Bluetooth for instances where a Wi-Fi connection isn’t possible, meaning that you don’t miss out on IAQ data when you’re within range of the purifier.
I used the Air Pro for a couple of weeks, both in the office and in my bedroom at home. Its readings aligned with our air quality monitor, and it reacted quickly to changes in the office environment and at home. It was clear to see the changes in air quality when there were more people in the office, or when we were eating our lunch. Variations were also picked up by the purifier at home, with the air quality dipping when I sprayed on some perfume, for example.
Other than a few little niggles, the Molekule Air Pro performed well when I tested its reactions following air contamination from dry shampoo. I left the purifier on Standard Auto Protect mode to see how quickly it would detect the change in air quality, and how quickly it could clear the air. After I sprayed some dry shampoo around the Air Pro, it took a few seconds to detect the reduction in indoor air quality, causing the air score to change to Very Bad.
Unlike the Molekule Air Mini+, this change in IAQ was accurately recorded on the air quality graph in the Air Pro’s app, showing a clear spike in the level of particulate matter and VOCs within a minute. That said, it doesn’t show the reading of “very bad”; but this is likely because it was at this level for less than a minute.
A little side note: I liked how the app shows the “Top 3 offenders in your air”, which after the dry shampoo assault showed Chemicals (VOC), Microfine particles (PM1.0), and Fine particles (PM2.5).
The fan upped its speed gradually in response to the “very bad” air score, dropping to “bad” in less than a minute. At this point, the air quality graph in the app had a little wobble. Whenever I tried to view which contaminants were affecting the air score, the graph would revert to the “good” reading from earlier that hour, while still showing that the current air score was “bad” up above. This wasn’t the end of the world at the time, since I could view the detailed readings on the purifier itself; but this glitch wouldn’t be ideal if you were trying to view this detail away from home.
The fan didn’t speed up as high as I’d expected. Other air purifiers I’ve tested tended to go up to the max fan speed when a similar IAQ rating had been recorded. The fan speed of the Air Pro seemed to remain at a moderate level, so it took about 20 minutes for the IAQ to return a “moderate” reading; and a further half an hour for it to return to “good”.
While other air purifiers I’ve tested have returned a reading of good IAQ within minutes, it’s worth remembering that while many of these cheaper models have the ability to filter VOCs, they can’t detect them, so their readings aren’t as in-depth as given by the Molekule Air Pro.
In terms of odor control, the Air Pro did a decent job of removing the strong fragrance of the dry shampoo within 15 minutes. In the first few days of testing, I agitated an old rug in our music testing room to see how the Air Pro would respond. Its was similar to when it encountered the dry shampoo, seemingly taking a low-and-slow approach to clearing the air. As part of this test, the purifier was left on Auto Protect for a few hours, which in my opinion left an odor similar to a freshly painted room, although my colleague said it just smelt of fresher air to him. It could be the filter that gives off this odor during its first few hours, or perhaps that’s actually what our unventilated little testing room smells like once the dusty air has been handled!
Unlike the Air Mini+, I was able to sleep with the Air Pro on Standard Auto Protect mode without issue. There were no surprise increases in fan speeds that interrupted my slumber, gaining it some bonus points from me. I did find a similarity to the Air Mini+ in that when it changed from manual speed three via Standard Auto Protect to Quiet Auto Protect, it took a couple of minutes for the fan speed to reduce to a low level, despite the air score being “good”.
I used a decibel meter on my iPhone 12 Pro to measure the sound level of the lowest, middle, and top fan speeds. Fan speed one gave a reading of 38dB, which is equivalent to light rain; fan speed three was 51dB, which is roughly the same volume as the noise from a refrigerator running, and the highest setting, fan speed six, was 78dB, which is as loud as a coffee grinder.
- Performance score: 4 out of 5
Should I buy the Molekule Air Pro?
| Section | Notes | Score |
|---|---|---|
| Value for money | There’s no doubt about it: this air purifier is eye-wateringly expensive. But that doesn’t mean that it isn’t good value for money, as you get a medical-grade purifier with great detection and response rates, plus patented PECO technology. | 4/5 |
| Design | With medical-grade polycarbonate, a strong aluminum case and faux leather carry handle, the Air Pro certainly looks good. It’s not the easiest to carry, and due to the UV light in the filter you can’t turn off the subtle blue light, but these are just tiny niggles in an otherwise well-designed appliance. | 4.5/5 |
| Features | The Air Pro’s detection abilities, FDA clearance, and high-tech filtration system are impressive but it’s let down by a lack of features or air purity notifications on the app, despite these being readily offered by cheaper models. | 4/5 |
| Performance | Overall the Air Pro performed well.It detected air quality changes and communicated the levels and duration within the app, and it reacted quickly to air contamination. It did take a low-and-slow approach however, taking a while to bring the air score back to good, but it did clear odors quickly. | 4/5 |
Buy it if…
Don’t buy it if…
Molekule Air Pro review: Also consider
| Molekule Air Mini+ air purifier | Levoit Core 300S True HEPA air purifier | Shark NeverChange Air Purifier | |
|---|---|---|---|
| Price | $1,014.99 / £799.99 | $150 / £150 | $249.99 / £249.99 |
| Room coverage | Up to 1,000 sq ft / 92.9 sq meters | Up to 328sq ft | Up to 650sq ft |
| Filters | PECO-HEPA Tri-Power filter | Pre-filter, HEPA and carbon | DebrisDefence / Medium Particle / Activated Carbon / NanoSeal HEPA |
| Noise level (Tested) | 38 – 78dB | 24 – 60dB | 38 – 68dB |
| Smart | Yes – Wi-Fi only | Yes | No |
| Fan speeds | Auto Protect – Standard & Quiet, 1-6 | Auto, 1 – 4 | Auto, 1 – 4 |
| Dimensions | 10.9 x 10.9 x 23.1 inches / 27.8 x 27.8 x 58.6mm | 8.7 x 14.2 inches / 220 x 360mm | 9 x 10 x 15 inches / 237 x 266 x 385mm |
| Weight | 22.9lb / 10.4kg | 5.95lbs | 7.25lbs |
| Controls | Touch panel / app | LED touch display, app or Amazon Alexa, Google Assistant | LED touch display (remote control sold separately) |
How I tested the Molekule Air Pro
- I used the Molekule Air Pro for two weeks
- I tested it in multiple environments
- I observed its reaction to aerosols
I tested the Molekule Air Pro in the TechRadar reviews office and music testing room, as well as in my bedroom at home.
I monitored how effectively it detected and purified airborne contaminants such as dust and dry shampoo, and how well it tackled the strong fragrance of the latter.
I left it running in my bedroom overnight to determine whether it disturbed my sleep. I tested the sound levels using a sound level meter on my phone and assessed the controls and how easy it was to change the filter.
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