Customer has an air purifier that uses ozone but (fair warning) she is very anxious and concerned about the ozone. Her daughter has asthma and the unit we installed is now discontinued. She had us unplug the current unit because she has been reading online about it and probably making herself more worried. But she wants to contact them first manufacturer and see what she can get them to do first before possibly having us install an FM1 which we offered to go half off on since we just installed it.