In Auto (similar to medium; the Air does not contain a particle counter to adjust to air conditions, but instead asks you to enter the approximate size of your room, after which the machine chooses a fan speed that Molekule deems appropriate), the air performed worse, reducing particles by 0.3 microns at only 18.0% (ambient) and 26.4% (clean). In Silent, it performed even worse, reducing 0.3 micron particles by 6.5% (ambient) and 7.2% (clean). And in Dark plus Auto, with its primary PECO purification system turned off and its fan at the equivalent of a medium setting, it reduced them by 21.3% (ambient) and 18.0% (clean). Interestingly, those numbers closely reflect our results in automatic configuration with the PECO system activated, suggesting the possibility that the Molekule Air depends mainly on its physical prefilter, not its patented PECO mechanism, to remove particles.
The Good Housekeeping seal holder Levoit air purifier is a great combination of value, performance and intelligent design. Its three-stage filtration system includes a true HEPA filter that captures even the smallest airborne contaminants in rooms up to approximately 400 square feet. A built-in precision laser sensor accurately monitors particles in the room and automatically adjusts fan speeds as needed. The purifier is also incredibly quiet, it works at only 24 dB, which you will appreciate if it is placed in your bedroom.
The Levoit 400S performed better at removing airborne particulates in our home tests, capturing at least 99.5% and up to 100% of particles during testing. A companion application that users can download provides useful data on air quality and allows users to program and program the air purifier to fit a busy family schedule. Unfortunately, despite its great functionality, the VEsync application was not always reliable. During the course of our testing, we had to uninstall and reinstall the application twice when it crashed. The Levoit 400S's quieter setting is barely noticeable, while the more powerful setting still registers only 52 decibels.
Sleek, quietly powerful and with an intuitive and easy to use intelligent interface, the Levoit 400S is our best selection of air purifiers. The Coway-AP-1512HH air cleaner also benefits from a built-in particle sensor. This means you can get an idea of the air quality in your home with the color coding system on top of the device. It will show a blue light when the air is clean, purple to indicate pollution and red for high pollution. Another smart feature of the Coway AP-1512HH are sensors that can adjust fan speed to keep the air clean, so you don't have to alter settings. We especially liked the Eco Mode of the Coway AP-512HH, which worked well to turn off the air purifier when air pollution was low, saving energy and money.
Our tester also found that the automatic mode worked well to toggle between fan settings based on indoor air quality. The Coway AP-1512HH is an air purifier suitable for small room spaces up to 361 square feet, making it suitable for smaller spaces and bedrooms. If you need something for a larger room, then you might want to look elsewhere. The Dyson Purifier Cool is one of the most elegant air purifiers on the market. Its unusual design makes it a talking point in any room, while simple but cool extras like a magnetic remote control take it one step ahead of an average air purifier. We burned a series of matches to check how well the purifier captures the particles. At a level 6 setting, we found that the purifier removed 98% of particles smaller than 0.3 microns, 72% of particles smaller than 2.5 microns, and 73% of particles smaller than 10 microns.
At a level 10 setting, we found that the purifier captured 95% of particles smaller than 0.3 microns, 96% of particles smaller than 2.5 microns, and nearly 100% of particles smaller than 10 microns. The Dyson Purifier Cool's high price tag may be too expensive to fit everyone's budget, but its sleek design and smart connected functionality are impressive. Our home tests found that the Blue Pure 221 was consistently better than all other air purifiers we tested despite its lack of Smart technology. We burned a series of matches to check how well it absorbed particles. In a Level 2 setting, we found that it absorbed 99.7% of particles smaller than 0.3 microns, 99.5% of particles smaller than 2.5 microns, and 100% of particles smaller than 10 microns. In a Level 3 setting, we found that it absorbed 99.9% of particles smaller than 0.3 microns, 99.6% of particles smaller than 2.5 microns, and 100% of particles smaller than 10 microns. Small enough for any desk or shelf, the Levoit H132's compact size and low price make it an ideal air purifier for someone who wants to try their first air purifier at home or for those with small apartments or who want an air purifier for just one room. Unfortunately, our tests found that Levoit H132 did not live up to expectations when it came to absorbing particles; steadily falling below 99.97%, which is expected from devices with HEPA H13 filters. However running it for longer periods can produce better results; making this an ideal option for those looking for an effective yet budget friendly air purifier.