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Honeywell True HEPA Air Purifier, Airborne Allergen Reducer for Large Rooms (390 sq ft), White - Wildfire/Smoke, Pollen, Pet Dander, and Dust Air Purifier, 50250-S
Purchase options and add-ons
Color | White |
Brand | Honeywell |
Product Dimensions | 18"D x 18"W x 19"H |
Floor Area | 390 Square Feet |
Noise Level | 60 dB |
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About this item
- LARGE ROOM AIR PURIFIER – Help make the air in your home cleaner with the Honeywell 50250-S HEPA Air Purifier. Recommended for large & extra-large rooms (465 sq. feet), it helps capture up to 99.97% of airborne particles as small as 0.3 microns.*
- HELPS REMOVE MICROSCOPIC PARTICLES AND MORE - This HEPA air purifier has 3 air cleaning levels. It can help remove particles like pet dander, pollen, dust, and smoke*. It can also help reduce certain bacteria, mold spores and viruses***.
- EFFECTIVE AIR CLEANING AND CIRCULATION –Honeywell Air Purifier for home filters and circulates air in extra-large 465 sq. ft. rooms up to 5 times an hour – 120x per day. You can breathe easy knowing the air in your home is cleaner and has fewer allergens.
- #1 BRAND RECOMMENDED BY ALLERGISTS** – Honeywell Air Purifier, The Doctor’s Choice, is the #1 brand recommended by allergists. Backed with a 5-year warranty, Honeywell air purifiers are a trusted partner in the fight against airborne particles.
- COMPATIBLE DOES NOT MEAN COMPARABLE – For best performance, use only genuine Honeywell air purifier filters. Compatible air purifier filter replacements are not guaranteed to offer the same performance or efficiency.
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This Item Honeywell True HEPA Air Purifier, Airborne Allergen Reducer for Large Rooms (390 sq ft), White - Wildfire/Smoke, Pollen, Pet Dander, and Dust Air Purifier, 50250-S | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $217.68$217.68 | -43% $99.99$99.99 List: $174.99 | -45% $169.99$169.99 List: $309.99 | -31% $159.00$159.00 List: $229.00 | $219.99$219.99 | $99.98$99.98 |
Delivery | Get it as soon as Monday, Mar 18 | Get it as soon as Monday, Mar 18 | Get it as soon as Monday, Mar 18 | Get it as soon as Monday, Mar 18 | Get it as soon as Monday, Mar 18 | Get it as soon as Monday, Mar 18 |
Customer Ratings | ||||||
Sleep mode | 4.2 | 4.0 | 4.5 | 4.7 | 4.6 | 4.3 |
Noise level | 3.7 | 4.2 | 4.0 | 4.6 | 4.5 | 4.1 |
Easy to use | — | — | 4.9 | 4.9 | 4.7 | 4.7 |
Odor elimination | — | 4.0 | 4.8 | — | 4.3 | — |
Value for money | — | — | 4.5 | 4.7 | — | 3.9 |
Sold By | PRIDE-USA | Amazon.com | Amazon.com | Elevate Your Home | Amazon.com | AFLOIA DIRECT |
filter type | Pre-Filter | HEPA | Pre-Filter | HEPA | Activated Carbon | HEPA |
floor area | 390 square feet | — | — | 1115 square feet | 1980 square feet | 1076 square feet |
control method | touch | touch | touch | touch | voice | touch |
power source | AC | Corded Electric | Corded | AC/DC | AC | ac |
particle retention size | 0.3 micron | — | 0.3 micron | 0.1 micrometer | 0.3 micrometer | — |
noise level | 60 decibels | — | 55 decibels | 22 decibels | 24 decibels | 22 decibels |
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Customer Review: 50250-s noise level compared to 17000
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Product Description
Product Description
*From the air that passes through the filter. Overall particle reduction depends on many factors including the amount of air processed, the pollutant type and the pollutant introduction rate into the environment. **When operated with the odor reducing pre-filter. It is recommended that the pre-filter be replaced every 3 months to effectively reduce common household odors and gases in a room. This product does not reduce or absorb carbon monoxide gas. Make sure gas appliances are well ventilated. ***Based on 11/10 AQS survey results reporting 124 out of 172 (72%) of surveyed Allergists that recommend an air purifier to their patients, recommend "Honeywell" air purifiers. cfmTobacco Smoke: 250, Dust: 250, Pollen: 250
Amazon.com
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The 50250-S offers these great benefits:
The Honeywell True HEPA Air Purifier was designed for extra large spaces! The permanent HEPA Filter helps caputure airborne particles 0.3 microns or larger1, greatly reducing the amount of dust, pollen, pet dander, and mold spores in the air. The 50250-S features 3 cleaning settings and a filter life indicator.True HEPA Advantages
- Doctors recommend True HEPA air purifiers.3
- Long-life HEPA Filter can be vacuumed to extend the filter life—replace in 3-5 years.
- Glass fiber HEPA filter captures up to 99.97% of particles as small as 0.3 microns!1
- Carbon activated Pre-filter helps capture larger particles like dust, lint, and fur and reduces common household odors.1,2
- Intelli-Check™ Electronic Filter Indicator eliminates guess work—tells you when to change or clean your filters.
- 250 for smoke
- 250 for dust
- 250 for pollen
in an extra large room up to 5x an hour!
The carbon pre-filter helps capture larger particles, while the True HEPA filter effectively removes microscopic allergens, 0.3 microns or larger.1
Exactly how small is 0.3 microns?
Shop For Accessories
HRF-AP1 Honeywell Universal Carbon Pre-Filter
Learn More >
1 From the air that passes through the filter. Overall particle reduction depends on many factors including the amount of air processed, the pollutant type and the pollutant introduction rate into the environment.
2 When operated with the odor reducing pre-filter. It is recommended that the pre-filter be replaced every 3 months to effectively reduce common household odors and gases in a room. This product does not reduce or absorb carbon monoxide gas. Make sure gas appliances are well ventilated.
3 Based on 11/10 AQS survey results reporting 124 out of 172 (72%) of surveyed Allergists that recommend an air purifier to their patients, recommend "Honeywell" air purifiers.
4 Up to 35% quieter than similar models
Untitled Document .chartOneCell { background-color: #707070;border: 1px solid #CCC;padding-right: 5px;font-weight: bold;color: #FFF;font-size: 12px;vertical-align: middle; } .chartOneCell img { } 1. Choose the best air purifier for your needs
= recommended = acceptable = not recommended Doctor Recommended for Allergen Reduction For General Air Cleaning True HEPA Allergen Remover HEPAClean® QuietClean® AirGenius® Smoke Pollen Dust Pet
Dander Mold
Spores Germs Odors VOCs *Purchase "K" pre-filter for QuietClean® Odor and VOC Reduction 2. Choose your room size
Length x Width = Total Square Feet True HEPA
Allergen
Remover HEPAClean® QuietClean® AirGenius® Small
51-99 sq. ft. Medium
100-145 sq. ft. Medium-Large
146-199 sq. ft. Large
200-349 sq. ft. Extra Large
350+ sq. ft. 3. Find the right replacement filter True HEPA
Allergen
Remover HEPAClean® QuietClean® AirGenius® Pre-filters
captures large particles/reduces odors Medium
captures allergens/
small particles Permanent
Washable Permanent
Washable
Product information
Color | White |
---|---|
Brand | Honeywell |
Product Dimensions | 18"D x 18"W x 19"H |
Floor Area | 390 Square Feet |
Noise Level | 60 dB |
Particle Retention Size | 0.3 Micron |
Controller Type | Button Control |
Item Weight | 21 pounds |
Manufacturer | Kaz |
ASIN | B00007E7RY |
Item model number | 50250N |
Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #96,985 in Home & Kitchen (See Top 100 in Home & Kitchen) #151 in HEPA Filter Air Purifiers |
Is Discontinued By Manufacturer | No |
Assembly required | No |
Warranty Description | 5 year limited warranty. |
Batteries required | No |
Included Components | Air Purifier |
Import | Made in USA and Imported |
Warranty & Support
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Top Brand: Honeywell
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, performance, and value of the air purifier. They mention that it removes a lot of dust particles from the air, and that it works well. They appreciate allergy relief, and breathability. That said, some complain about the noise, brightness, and size.
AI-generated from the text of customer reviews
Customers are satisfied with the quality of the air purifier. They mention that it removes a lot of dust particles from the air, and makes the house smell cleaner and fresher. The 360-degree filter pulls air in from every side, making it easier to set up and operate. Customers also mention that the product is easy to keep clean and that it provides fast relief.
"...the house and remove excess dust in the air, but the air has a noticeably different smell and feel when you enter the house...." Read more
"...Today there is a minimal amount of dust to be seen on my tables. Huge improvement!!..." Read more
"...Pros: cheap for this large a room (500 plus square ft), moves air well, easy to set up and operate, bulky but not very heavy...." Read more
"...I can tell the difference in the air quality already. Yesterday was the 4th of July, so the air quality today wasn't the best...." Read more
Customers are satisfied with the performance of the air purifier. They say that it works well, the filters work great, and the operation is simple and effective. They also appreciate the design of the product, which is pretty efficient.
"...what I wrote at the top of my review--this machine really, really just works, and works alarmingly well.)..." Read more
"...June 22, 2012 Update: The air purifiers (I now have two) continue to run great, however I need to correct a misconception that I had about the pre-..." Read more
"...DECEMBER 2016: I am sitting right next to this filter. Works fine, I run about 12-14 hours continuously, sometimes more per day...." Read more
"...It's effective and powerful, yet still under $200. This is a steal considering high-end purifiers cost $100s or even above $1000...." Read more
Customers like the value of the air purifier. They mention that it is an excellent air purifying device for a very affordable price, and the replacement filters are a lot less expensive than other HEPA filters.
"...Pros: cheap for this large a room (500 plus square ft), moves air well, easy to set up and operate, bulky but not very heavy...." Read more
"...The pre-filters for this model is reasonably priced and the main filter is permanent which only needs vacuumed from time to time...." Read more
"...has long filter life, low maintenance requirements, and reasonable operating costs.Score: 9 of 10, "lifetime" air filter6...." Read more
"...filters themselves, and what they sell under their name is of questionable quality, I will be looking for options at Home Depot, Lowe's, etc...." Read more
Customers are satisfied with the allergy relief provided by the air purifier. They mention that their allergies have been reduced big time, they no longer have asthma symptoms, and the amount of sneezing really has decreased. The device provides excellent protection from airborne allergens, and customers are able to breathe through their noses better.
"...No stuffy nose either. I'm sure that this will work perfect for our house.Will update my review if anything changes...." Read more
"...No more burning, itching eyes, no stuffy nose, no burning face. All four machines were on high for 3 days, then on medium. Yes, it was pretty loud...." Read more
"...I was however pleasantly surprised at how well it does work at helping ease my allergy symptoms and some of the odors it does seem to help with...." Read more
"...6. This morning I woke up to far less allergy symptoms...." Read more
Customers like the breathability of the air purifier. They say that it helps them breathe easier when sleeping, has less allergy issues, and is easy to sleep with. Some say that the noise is steady and soothing, and it helps keep them asleep for naps. Some customers say that while the air is purified, they wake up headache free and without sneezing. They also say that this unit is loud, but not intolerable, and that it has helped greatly in combating their sinus issues.
"...Done.Yes, this unit is loud, but not intolerable. With it on low, I can hear the TV just fine without having to turn up the volume...." Read more
"......" Read more
"...10. Air cleaners are stylish, portable, comfortable, and convenient for consumer use.Score: 7 of 10,..." Read more
"...I own were a good investment for me and have really helped greatly in combating my sinus issues. I would recommend it to anyone who suffers the same...." Read more
Customers are mixed about the size of the air purifier. Some mention that it is loud and quite sizeable, while others say that it fits in the room nicely. The unit is large and bulky, and is much easier to move around on wheels. However, some customers say that the drawbacks are that it's a little big and bulkier, and that it has a large footprint. The cord could be a tiny bit longer, especially if you need to keep it 3 feet from walls.
"...The filters are about the same per year. They are tiny however compared to this mammoth beast, see dimensions...." Read more
"...3. Quality construction; case, gaskets, seals, and precision fitting eliminate bypassing and assure high efficiency at filtering airborne sub-micron..." Read more
"...The cord could be a tiny bit longer, especially if you need to keep it 3 feet from walls and furniture, a longer cord..." Read more
"...the price, it met my needs better than the others in that it covers a much larger area than one medium-sized room. That said, it is LOUD!..." Read more
Customers are not happy with the noise produced by the product. They mention that it is pretty loud and difficult to hear the TV over it unless it's on low speed.
"...On low it still sounds like box fan on high. But just like running a box fan, you tune it out pretty quickly...." Read more
"...It does help. Noisy, quite loud at highest level, but I personally find it tolerable, even in sleep (constant noise, no clatter)...." Read more
"...My wife agrees that the medium setting is a nice white noise background for sleeping, so I don't agree with many of the reviews. 3...." Read more
"The two things I was worried about when I bought this was the noise level and the bright blue light...." Read more
Customers are not happy with the brightness of the fan. They say that it emits a piercing blue laser like light when turned on, and it shines from around the rotary switch and all the edges of the control. The model as of April, 2013 includes blue LED lighting for the Rotary switch, which is not just one light, but a circle of evil blue laser light that is emitted ALL around. Customers also say that the control switch lights blue, which makes it difficult to sleep at night.
"...The unit has a fairy bright blue light visible at night, but this is likely a safety feature so people don't trip over the unit while heading to the..." Read more
"...Honeywell 50250 is not so great for lite sleepers...." Read more
"...It isn't just one light, it's a circle of evil blue laser light that is emitted ALL around the dial, which makes it practically impossible to cover..." Read more
"...The blue light is bright enough to notice. But personally I don't like bright blue electronics lights...." Read more
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The people complaining that it's an old, bulky design that's a little louder than more modern units? Good! The last "more modern" unit I had--a Holmes mini-tower HEPA purifier--allowed so much air to bypass the HEPA filter, it spit out black soot on my walls and floors. It ended up on a one-way trip down the garbage chute after two years of my partner and me wondering why we always felt sick and congested even though we ran the unit 24/7. I opened up the unit and found everything inside caked with thick black gunk from all the bypassed air.
Yes, on Turbo the Honeywell 50250 sounds like a 737 ready for takeoff. But you only run it that high when you really need to, which is rare. On low it still sounds like box fan on high. But just like running a box fan, you tune it out pretty quickly. Eventually, your house comes to feel weird without the noise of the unit in the background. Most of all, you feel an immediate change in the air. This unit, even on low, puts out enough clean air to create a breeze that will flutter your clothing as you walk by. If you live in a "sick" building like we do, you will notice the difference every time you enter and leave your front door, and it's a big difference.
You do have to replace the pre-filter (which is relatively inexpensive) every three months. You can cheat and wash it like I used to, but the charcoal just washes away eventually. You really do want to replace it. You can carefully vacuum the outside of your HEPA filter but you won't need to replace it--which is good since it's more expensive--more than every three years or so. Most important is to keep the outside of the unit clean/vacuumed and replace the prefilter. A dirty prefilter you refuse to replace will make the machine become very loud and very inefficient. TRUST ME on this--I've been there too many times in the many years I've owned this machine. Do yourself a favor and just buy a few pre-filters in advance.
The machine feels all 20 of its pounds heavy, but the handle on top makes it manageable to move, or to carry from room to room. We will eventually get Honeywell's small (sub-100 sq. ft.) True HEPA machine for our bedroom, but for now we split the machine's time between living/dining room and bedroom. A couple of hours in a new room is enough to make it feel like brand-new room. (I can't stress enough what I wrote at the top of my review--this machine really, really just works, and works alarmingly well.)
I've added photos of the unit and its box so you can get an idea of its size and bulk relative to normal furniture (and normal-size adult cats!) In the photos, you can also see what the inside of the unit looks like when it's open, top and bottom, as well as see how the pre-filter wraps around the HEPA filter and is secured with two Velcro strips.
I can't speak to power use, but even on low the machine is noticeably powerful. Over the years, we replaced all our incandescent bulbs with compact fluorescents and LEDs, so it will be apparent pretty quickly if our electric bill goes up significantly. I may come back to this review in a couple of months to revise it with the change we notice in our bill from running the machine on low 24/7.
And, please, don't be silly. The machine was designed to run 24/7. The instruction booklet suggests you run it 24/7. If you want all the wide and nifty health benefits of clean indoor air (cardio-pulmonary, cognitive, attention-related, stress-related), run it on low 24/7. I only ever turned my previous two machines off to change the filters. Then again, you'll probably come to love the device so much that not running it will feel like leaving your house without your cell phone.
Having this machine again is like seeing a beloved old friend again. I can't believe how much I missed it, or how much better the air is in my apartment already. HIGHLY recommended!!!
Reviewed in the United States on November 15, 2017
The people complaining that it's an old, bulky design that's a little louder than more modern units? Good! The last "more modern" unit I had--a Holmes mini-tower HEPA purifier--allowed so much air to bypass the HEPA filter, it spit out black soot on my walls and floors. It ended up on a one-way trip down the garbage chute after two years of my partner and me wondering why we always felt sick and congested even though we ran the unit 24/7. I opened up the unit and found everything inside caked with thick black gunk from all the bypassed air.
Yes, on Turbo the Honeywell 50250 sounds like a 737 ready for takeoff. But you only run it that high when you really need to, which is rare. On low it still sounds like box fan on high. But just like running a box fan, you tune it out pretty quickly. Eventually, your house comes to feel weird without the noise of the unit in the background. Most of all, you feel an immediate change in the air. This unit, even on low, puts out enough clean air to create a breeze that will flutter your clothing as you walk by. If you live in a "sick" building like we do, you will notice the difference every time you enter and leave your front door, and it's a big difference.
You do have to replace the pre-filter (which is relatively inexpensive) every three months. You can cheat and wash it like I used to, but the charcoal just washes away eventually. You really do want to replace it. You can carefully vacuum the outside of your HEPA filter but you won't need to replace it--which is good since it's more expensive--more than every three years or so. Most important is to keep the outside of the unit clean/vacuumed and replace the prefilter. A dirty prefilter you refuse to replace will make the machine become very loud and very inefficient. TRUST ME on this--I've been there too many times in the many years I've owned this machine. Do yourself a favor and just buy a few pre-filters in advance.
The machine feels all 20 of its pounds heavy, but the handle on top makes it manageable to move, or to carry from room to room. We will eventually get Honeywell's small (sub-100 sq. ft.) True HEPA machine for our bedroom, but for now we split the machine's time between living/dining room and bedroom. A couple of hours in a new room is enough to make it feel like brand-new room. (I can't stress enough what I wrote at the top of my review--this machine really, really just works, and works alarmingly well.)
I've added photos of the unit and its box so you can get an idea of its size and bulk relative to normal furniture (and normal-size adult cats!) In the photos, you can also see what the inside of the unit looks like when it's open, top and bottom, as well as see how the pre-filter wraps around the HEPA filter and is secured with two Velcro strips.
I can't speak to power use, but even on low the machine is noticeably powerful. Over the years, we replaced all our incandescent bulbs with compact fluorescents and LEDs, so it will be apparent pretty quickly if our electric bill goes up significantly. I may come back to this review in a couple of months to revise it with the change we notice in our bill from running the machine on low 24/7.
And, please, don't be silly. The machine was designed to run 24/7. The instruction booklet suggests you run it 24/7. If you want all the wide and nifty health benefits of clean indoor air (cardio-pulmonary, cognitive, attention-related, stress-related), run it on low 24/7. I only ever turned my previous two machines off to change the filters. Then again, you'll probably come to love the device so much that not running it will feel like leaving your house without your cell phone.
Having this machine again is like seeing a beloved old friend again. I can't believe how much I missed it, or how much better the air is in my apartment already. HIGHLY recommended!!!
I have some old ionic type tower air purifiers, and they just don't handle the air volume that this unit does. I have a number of large rooms in my home and the Honeywell 50250-S is perfectly suited for my needs. It may not work for everyone, but I plan on buying a second unit. If you do get this unit, go on the Kaz.com website to get a owner's manual. It has some addtional information over what is provided in the material included in the package. The additional info on cleaning is particularly helpful. It shows you how to vacuum the HEPA filter to help extend the useful life, but it points out that you should not try to clean the pre-filter. Good Luck!
June 15, 2012 Update: I have owned the Honeywell 50250-S Air Purifier for a week now and it has performed beyond my expectations. It took a few days to totally freshen the house and remove excess dust in the air, but the air has a noticeably different smell and feel when you enter the house. However, I was getting tired of hauling the one unit from room to room and I decided to buy a second. I considered buying the smaller HEPA towers for the smaller rooms, but the current price of the 50250-S offered by Amazon is about the same as a small tower and it is far more powerful. I found by experimenting that running the unit on high (turbo) in the smaller rooms (less than 15' by 15')for about an hour and then on medium for an hour or two did a great job of cleaning the air. I prefer that to having a permanent small tower that takes a lot longer to clean the air. There were two other comments that I noted in some of the product reviews. Some complained about the blue light that shines when the unit is on (particularly a problem at night). One person talked about putting tape on the light. I found that just taking a dark sock and folding it in half over the light worked great. Just be careful not to place it over the circular air channel on top so not to block the air flow. The other issue was that running the air purfifier for an extended period can cause the room to become warmer. I notice that a little, but it is mainly when I run the unit on high for an extended period. It is less noticeable when I have the unit on medium or low speed. As I mentioned earlier in my review, I don't run the unit on high for more than a few hours and that seems to work fine so you can manage the noise and heat by experiementing with what does the job for your home or apartment.
June 22, 2012 Update: The air purifiers (I now have two) continue to run great, however I need to correct a misconception that I had about the pre-filters (HRF-AP1). After reading all of the reviews about concerns about "non-Honeywell pre-filters", I decided to pay a little extra and order my pre-filters direct from Honeywell (Honeywell.com). The description on their web site leads you to believe that there is enough filter material in the box (you have to cut to size) to get 2-3 filters. For the 50250-S, that is not the case and when you receive it, the box clearly says that for that model, you will only get one filter (and a little left over that is too small to do anything with). I paid $11.95 for a "Honeywell" filter which when placed side by side with the original equipment filter is much less dense. You can literally see through it so I don't know how it is going to trap small dust and pollen particles. The same Kaz filter (in the identical Honeywell box) sells by Amazon for $9.94. Then there are other sellers as low as $7.30 for generic 38002 pre-filters. Although this doesn't change my opinion about the quality of the air purifier itself, I now must be prepared to spend more in pre-filters than I had taken into account initially. If anyone else has come across a better quality filter at a good price, I would like to hear about it. Since Honeywell does not appear to produce these filters themselves, and what they sell under their name is of questionable quality, I will be looking for options at Home Depot, Lowe's, etc.
April 2013 Update: Prior to purchasing my two Honeywell 50250-S Pure Hepa Round Air Purifiers, I had read a couple of reviews that mentioned having problems with the switch. Since it was only mentioned a few times out of hundreds of reviews, I didn't think much of it at the time. However I am now having problems with the switch on one of my units after owning it less than a year. If you put the unit on the high speed setting, it turns off sometimes for no apparent reason. When you are cycling from medium to high speed, sometimes it shuts off before you even get to the off setting. There appears to be a problem with contact points. Kaz, Incorporated handles all of the warranty work for Honeywell on these units. I wasn't looking forward to dealing with someone I had not even heard of prior, but the experience turned out to be much better than I had anticipated. I boxed up the air purifier and sent it to Kaz ($36 postage via UPS), Kaz sent me a new unit in less than a week and Amazon credited me for the amount of my postage. This gives me a whole new sense of confidence in dealing with third parties for Amazon sourced purchases.
July 2014 Update: My second Honeywell Air Purifier has started to have switch problems after two years. Although we run the unit a lot, as mentioned in my April 2013 update, it appears to happen not too infrequently with this model. What happens is that over time, the switch will not stop in a unique spot (high, medium, low) so it sort of drifts between the contact points for those settings. Recently this drift caused the circuit breaker for this outlet to trip so I need to either get it fixed or replace it. My wife and I love how this unit cleans the air, so I guess we will just accept that a two year life on something that costs a couple of hundred dollars and that is essential to your quality of life indoors is acceptable. I just hope that Honeywell reads these reviews and picks up on this flaw to improve in future models.
Top reviews from other countries
At full blast, there is a loud constant noise, but it's from the air movement. I can't hear any motor noise at all. The air movement helps with air circulation as well. I can run the air conditioner at a higher temperature than I was without the filer.
It is Ok loud on its minimal setting which we use during the day. It is easy to carry within the house. it does take care of about 700-900 sq ft surface. House guests were all, spontaneously, remarking on the good air quality. That is noteworthy, because after a while we just got used to it and were not noticing the improvement, but it does do its work and I recommend it especially in houses close to the streets and where you cannot keep the windows open and ventilate at all times.