While rated for a medium-sized room, this machine will handle larger spaces if left running continuously - even at the lowest speed. That assumes normal living habits. I am a smoker and will not give up my cigars for anything. Wife and kids do object. However, with the machine running and filter in good condition those objections are few and far between, Upon bringing it home I was bothered by a drone emanating from the cleaner. On close inspection with a flashlight I could see the (turbine) fan wobble. The wobble coincided with the fluctuating drone. First thoughts were to go in for warranty service. Then, I figured I'd take things in my own hands: - Dis-assembled the cleaner - three screws visible on top plus another 4 screws buried behind the filters. Noticed the fan was plastic and of pretty flimsy construction. Removed the fan; -Re-installed/re-seated fan with the fixing nut not too tight. Factory had the fan tightened down to an extent where the plastic got distorted. That resolved the subtle, haunting, fluctuating hum that was distracting me. Now, it is the way it should have been - with a consistent sound of air-flow. Frankly, this machine operates on exacly the same principle as utilized by some costlier units I have owned. Efficiency is at par. Ion function is useless - a carry over sales 'feature' from fads of the past One last thing: when the carbon filter is clogged it has also lost its innate ability to purify air. No amount of vacuuming will help. When its worn, it is dunn. Replacement sheets of similar carbon element can be purchased on the cheap, off the web. Just cut them to size, ensuring proper fitment and total coverage. Oh, I do miss a remote. Purchased a $10 plugin receiver that turns the machine on and off remotely - available at the local hardware store.
Buy this if you want a disposable hepa filter. Do the research, there are basically no replacement filters available for shipping or on line at other places. All questions about this are responded by sears with call sears. They don’t have it for shipping, haven’t in a very long time, so if you want to spend 200$ plus on a unit with no replacement filters then go ahead and click the purchase button.
I was amazed at the price, $90 for large room purifier. Consumer reports said it was OK too. It arrived and ran fine. But same day, I looked for replacement filters. Even went into Sears Chat for about an hour with three reps, moving deeper into their support organization. No Filters anywhere! I looked at a prior review, and I see this was already reported, more than a year ago. So I returned it. Too bad. But maybe they lowered that price to $90 to get rid of units that would be useless, because no replacement filters available.
Large HEPA Purifier was purchased online and was received in a timely manner in good condition. This is and updated version of the Medium one we have had for years. I hope to get the same service from this one. New feature is that 83396 can be placed upright as pictured or can lay flat on a table or floor.