Not sure if my is defective or it it’s just the way it is. Was never quite or cooled as well as the dyson tower, of which I have two and love. Got this one for my home office which is small with limited space. Right away noticed that it was noisy. I should have returned it but I liked the way the air purifier function worked. It did a fantastic job and eliminating the cat litter box odor so I kept it. One month later it breaks down , get a causation error message so I decide to use the 2 yr warranty option. Not an easy process and still waiting for a return label. Regret buying .