Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: How many square feet will it clean, or will one clean a 1500SF great room?
Document: We bought this, along with 3 smaller (from a different company) purifiers (one for each bedroom) and this big one for the main living area. It says it does 590 square feet? But we have a total space of about 900 sq ft and it's doing a great job! The dust has gone down DRAMATICALLY. We only have to dust once every couple of weeks, and that's just for upkeep to look pretty. I work in the home with a lot of burlap (natural fibers.. get EVERYWHERE) but since getting this it's 1000 times better.
Great for HEPA filtering in a large space, it is LOUD on turbo but really does a number on the room using the allergen setting. Also a good looking unit. Made a noticeable difference in air quality but did not eliminate allergens completely in a 700sq basement that had a sump and french drain. There were no other gizmos like germicidal lamps or ionizers on this unit aside so we bought another unit to complement this one.
Works great, noisey at high speed but fine for sleeping at low or middle speed. Front clips as others have mentioned are poorly designed. One clip was faulty out of the box. The fix is easy. Just use self stick Velcro cut to fit (about a 1 inch piece).
got this for our living room and it has been working great - I like the feature of turning it on turbo mode for a few hours when we leave - nice to come home to the house smelling fresh and dust free - great for folks with allergies and kids with asthma.
Works well after two weeks. Very quiet at the low level. Has three True HEPA and another for oder. It appears to be mechanical so no ionizer if you don't want ozone in your house. It is bigger than your average air purifier but not too big to look bad. Great for a large room or even entire floor. Every part of this air purifier works well. Nothing inconsistent. Less dust and more fresh air in the house with this thing.
I did a lot of research on air purifiers, decided that this was perfect for our large open living room. Very quiet at the low setting, really moves a lot of air at he high setting. Odor and particulate reduction very good so far.The replicable filters are well priced on Amazon. My bedroom Honeywell unit has permanent washable filters, these filters are neither washable nor permanent, the filtration is better but it does add to the cost of ownership. The clean air is worth the extra cost to us. Our neighbors heat with wood, and the smoke and soot gets into out house.I too have the issue with the door not latching, fixed it with a bit of black duct tape.
purified our home air in first day. before the purifier, we had dust floating in our air mostly noticable in direct sunlight. no longer any probs. yes, the high speeds are loud but just set the timer when you leave the house and come home to clean air. we have a two story first floor so alot of air gets pushed thru this machine.
Caught this beauty on sale of almost 40% off. Thank goodness! We have premature twins and it's important to keep our home as clean as possible. I had purchased a similar unit at a local superstore, and this was a larger unit for less $$$. Can't go wrong with that! Plus, it  WORKS! Yes, it's a little noisy on the turbo setting, but that's to be expected. We have no issue with the front door staying closed, and replacement filters are available in multi-packs here on amazon.
Great customer relations Honeywell!
No one is going to see the tape. Not worth the hassle or exchanging it.
Answer: John I have this filter in our 900 Sq foot great room and it does a grear job. Our first floor is about 1400 Sq feet and it seems to be working well. It's incredibly quiet and looks much better than the older round Honeywell filters.