The Erik ULTRA PLUS features variable speed EC motors for energy savings and has extra large filters to last longer. The FINN model is for smaller rooms such as a bedroom and include a UV-C purifier which serves to sterilize the HEPA filter during operation. It has a small footprint with its modern tower design and alerts you when it is time to change the filters. The brand is available in the USA and Asia and can be purchased directly through their website. They have a very good warranty but use basic technology instead of air quality sensors.
The AIR RESPONSE models are available in three sizes and are controlled by air quality sensors. They have two stages of cleaning and an air quality indicator bar that changes color based on the amount of impurities in the air.
The AirInstinct 200 units are a better choice with three stages of filtration and they are backed by a better guarantee. (They can be purchased on Amazon.com through the link below the photo.)
The SERIES 2000i smart air purifier is WiFi enabled and is for medium to large sized rooms. Their AeraSense controls detect the slightest change in indoor air quality and automatically adjust the fan to control the unit. The units provide a constant visual indication of the room's air quality with a number rating of from 1 to 12. They have DC motors for quiet and reliable operation but their warranty is not very good when compared to other brands.
The INTENSE PURE AIR is a smart four stage air purifier that includes their patented "nanocaptur technology" which destroys formaldehyde which has been classified as a human carcinogen. Their air quality indicator changes color based on the amount of impurities in the air and they have a night mode for extra quiet operation.
The units are available worldwide but their warranty is not very good when compared to other brands.
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