The air filter works great! I do find that it doesn't necessarily reach every nook and cranny even though our house is only 1100 SQ ft. But, it does a great job in our living room. I have also found that when the air conditioner is on,  the filter reads mostly the air from the AC and not the rest of the house, so I will have to move it to another spot and see how that helps.  This model does have the scent cartridge, and it works well. When it runs, it smells quite fresh!