I would strongly recommend placing it at least 2-5 feet away from the gas fireplace to avoid interference with airflow and to prevent overheating.

I believe the humid air would still pass through the filter even when the air purifier is turned off. So, in my opinion, getting a portable unit that you can easily move out of the bathroom when not in use would be the best solution.

The most important thing in your situation is to place the air purifier near the source of the pollution. So, place it where your cats move the most, and of course, near the cigarette smoke pollution.

I’m glad my tips helped.

Just use it at a lower speed, as the airflow is much smaller on low than at the max speed; the same applies to the room coverage.

Hi Charlie, I would place it on the floor, but I also recommend considering purchasing a more powerful air purifier due to the 20′ ceilings.

If that wouldn’t work, then another good idea would be placing an additional (small) air purifier in the open loft.

Could you please share that research with me? I’m interested in reading it! I can understand that a large concentration of pollutants may be present on the floor, but an air purifier can’t clean pollutants that are on the floor; it can only clean airborne pollutants. Therefore, it seems more reasonable to me to place it at a higher level.

Typically, I place large air purifiers (those designed for large rooms) on the floor, while I place small and portable air purifiers on a small desk, no taller than 3 feet (approximately 1 meter).