A good practice is to place the unit as high as you can in the house. Ozone weighs more htan air so it will sink down and dilute as it falls. So the concentrations being breathed will be a little less concentrated. It is also great t blow up in the air intake of your air conditioner to help control fungus and mold growth in the ventilation system. Also remember to keep ozone away from wet suits if you have them.
Ozone destroys rubber like neoprene wetsuits.