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The PI 100 is a three stage air purifier with digital controls and a three speed fan. The brand is from WHITE AND BROWN which is a part of TAURUS GROUP but their website is not much help.
The units are very stylish but they do not have smart controls and their guarantee is not very good when compared to other brands.
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The G.SOL 5101 NANO air purifier has five stages of purification and electronic controls. The units have been certified to be effective on viruses, bacteria, and fungi, as well as common dust and dirt. The brand is a part of EREZ GROUP but their website is not much help and does not have a stated warranty policy.
The HEALTHMATE AIR PURIFIER has four stage air filtration and three speed manual controls. They are made in the USA and can be purchased directly. They are backed by a very good warranty but do not have smart controls.
The BAP756-U is a "true HEPA" model while most of their others are not. They are basic units with four speeds and an Arm & Hammer external filter.
The units can be purchased directly and are backed by a good guarantee.
The SENSE+ units have smart controls and can be connected to Wi-Fi for remote system control. They use Hepasilent technology with electrostatic and mechanical filtration.
The PRO XL model is for large spaces and offers an optional wall mount. They are only sold through authorized dealers but they are backed by a very good warranty.
The O2+ BALANCE units feature touchscreen controls with a remote and air quality sensors while the O2+ SOURCE models have simple electronic controls.
Both have three stages of filtering and visual air quality indicators as well as filter change indicators. They are backed by a good warranty.
If you need help in selecting the proper portable HEPA air filter, you can contact me (Hvacrepairguy) on Facebook Messenger by clicking on the button. I will find the proper size for you, select the best that is available on Amazon.com and send you a link to purchase it.
You can continue to browse our alphabetical list of manufacturers but, if you are looking for a specific brand, you can enter its name in the search box at the top of the page