I was having some construction done in my home and got this to assist with the dust. It seems to make a huge difference. The one improvement would be washable filters.
We both suffer year-round with allergies and also have 2 large dogs that shed. Placed this unit in the bedroom and ran it full speed for 6 hours then set it on auto. Air quality sensor shows clean air and fan runs mostly on low and medium speed. This thing is dead quiet. Control panel lights can be turned off not to disrupt our sleep. You cannot tell that two dogs sleep in that room, and our allergies are well controlled while we sleep.
My new 45i has been in service now a couple of weeks and the results have been incredible. The air quality in the area where the unit is placed has been so much better.
This air purifier is quite effective; quickly eliminating particulates and even smoke. With additional air circulation, it’s possible to filter the air in adjoining rooms up to the maximum ability of the unit. It is very quiet. Unlike most units at this price, it features an air quality indicator. In the bedroom, it helps with less interrupted sleep.
I've only had my air purifier for 10 days but it's wonderful! I'm sneezing and coughing less. It's well worth the money and I'm thinking about getting a 'smaller' version for our bedroom.
Customer service was amazing and I couldn't believe it was delivered in about a week from order!! I highly recommend the product and the company.