I have had an Airfree Air Purifier in my office for years now that has run trouble free. These are extremely misunderstood in how they function, and hopefully the video help clear things up. Basically, the Airfree unit brings air into a chamber that destroys viruses and bacteria with heat. This same heat is used to draw the air into the unit, so there is no fan, no filters, no UV bulb. Air is cooled before it leaves the unit so it will not raise the temperature of the room it is in.
Here’s a video from the manufacturer that has recently put out that is worth watching.
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