I was in the market for a new air purifier because my last one just died on me. I have asthma and allergies that causes me hard to breathe sometimes and makes me have a runny nose. My last air purifier was alright then when I got this it absolutely changed the way I live! I can now breathe better in the house and I don’t sneeze as much or have a constant runny nose! The HEPA filter definitely helps a lot and I absolutely will buy another one for another area of my house!