Pros: The 83254 is perfect for any average size room in your house.
Cons: When you run at high speeds it does seem a little loud.
I purchased the Kenmore Air Cleaner after looking at a few other models.
I have been running the unit continuously for almost 6 months and have had no problems. The filters can be expensive but if you shop around you can usually find one at a reasonable price. My wife has asthma which is affected by our pets feathers and hair. When I replace the filter I can see all the animal hair and feathers the kenmore removes from our living space. I recommended this unit to a friend of mine and he was able to pick one up on Ebay for about half of what I paid and he couldn't be happier. Both him and his wife are moderate smokers and since he purchased and started using the Kenmore The smell of cigarette smoke has been virtually eliminated from his house. All in all, for the price, the Kenmore Hepa Air Cleaner, in my opinion, stands alone in quality and is most definitely worth the price. I would wholeheartedly reccommend that if you run across the Kenmore Hepa Air Cleaner, Model number 83254 on one of the numerous auction sites on the web that you do not hesitate to purchase the unit. If you or one of your loved ones is experiencing any kind of breathing problems or upper respitory ailments that you install the Kenmore Air Cleaner in your home and begin experiencing the health benefits of breathing clean, fresh air.