This is a large air purifier with the power to clean air in rooms up to 800 square feet. For people with allergies, an effective air purifier can ease uncomfortable symptoms and promote more restful sleep. And anyone can appreciate the smell and feel of fresher indoor air.

It has an all-in-one pre-filter/HEPA filter/light carbon filter that removes airborne pollen, dust, pet dander and other contaminants, while getting rid of odors and freshening the air. The ionizer in the unit charges dust and pollen particles, which has been shown in university testing to benefit many who suffer from respiratory allergies. Unlike other ionizers, though, the A350 does not produce harmful ozone.

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The unit is slender and can be mounted on the wall to save space. With four fan speeds, you can adjust the air purifier to get greater cleaning efficiency or less noise, depending on what you need. On high speed, this unit really moves a lot of air. The low fan setting is amazingly quiet.

The air purifier is simple to operate right out of the box, with nothing to install or put together. The button controls are very intuitive. The front cover comes off easily and filter changes are a breeze. The LED helps remind you when to change the filter.

Overall, this is a quality product that will help you maintain healthier indoor air quality. If you need an air purifier for larger rooms, this is the one to look at.

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Here are some of the features of the Alen A350 HEPA Air Purifier:

• - Effective removal of 97.5% of all particles less than 3 microns such as pollen, dust, animal dander, dust mites and molds
• - All-in-one pre-filter/HEPA filter/light carbon filter that makes filter changing easy
• - 4 speed settings and 12-hour timer
• - Wall-mountable, space-saving design
• - Built-in ionizer that minimizes pollutants without producing ozone
• - 18.5 x 8 x 17.5 inches; 19 pounds

Here is what current owners have to say about the Alen A350 HEPA Air Purifier:

Cathy Lindbeck: “After much research and wasted money on air filters that simply did not work, I have found an air filter which I am satisfied with and could afford. Even the replacement filters were reasonably priced compared to the others. I was discouraged when most of the top rated air purifications systems I was looking at were priced out of my price range; $700 and above, then I happened upon the Alen and was pleasantly surprised. It was reasonably priced and had an environmentally friendly ionizer option, features I was looking for. The Alen filter when set on 2 creates white noise which even my noise sensitive partner can tolerate. I wake up able to breathe, feeling refreshed, a first for me. And my partner had to agree that even he was breathing easier in the morning. I am very satisfied.”

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This air purifier is a compact, reasonably priced unit that does a good job of cleaning the air in a small space. Buyers give it high marks for quality and performance.

The air purifier has a HEPA air filter, an activated carbon filter and an ozone-safe ionizer that work together to remove airborne allergens and pollutants and to eliminate odors. Replacing the filters is easy. The HEPA filter gets changed every 6 months and is not expensive.

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This is a nice-looking, well made appliance that is very easy to use. The unit is 18 inches high and about 5 inches wide, with a smart cubby-handle. The base of the unit has a swivel so that you can rotate the unit about 25 degrees in each direction. The Alen T100 may be a bit large to be a permanent feature on a desk, but it’s so light and portable that you can move it around as much as you like.

Buyers are pleasantly surprised and frequently comment about how quiet the unit runs, especially on its lowest fan setting. Even on medium speed it is no louder than a small desk fan.

What makes this model unique is that it’s small and portable while still being very effective in cleaning the air. In fact, it does a much better job of purifying the air than so-called “bargain” air purifiers. If you have a small space that needs freshening or you want to be able to easily transport the unit, this is a good choice for you.

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Here are some of the features of the Alen T100 Desktop Air Purifier:

• - Pre-filter/HEPA Air Filter in the T100 air purifier tested to remove 84% of airborne contaminants
• - Removes smoke, pollen, dust, pet dander, dust mites and molds
• - Enhanced activated carbon filter in the T100 air purifier for even greater odor removal
• - Ozone-free ionizer complements HEPA filter to improve performance and promote a healthy environment

Here is what current owners have to say about the Alen T100 Desktop Air Purifier:

Brian Collins: “I must say, I am impressed and I knew I would be. This is such a great purchase. It has three speeds, the lowest is very quiet. I usually have it on 2nd speed because it is no louder than a small desk fan. The highest speed is about a loud as the AC on high, although I slept with it on high last night and didn’t notice and I think I’m a light sleeper. Overall, this product is great. The “ion” mode says it uses ions to make the room smell clean, but that is hard to tell. I will say, this unit makes my room smell a lot fresher and the air is better. The peace of mind with this unit is great.”

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The Alen Tower T300 air purifier works in several ways to efficiently clean the air in your home.

The HEPA filter removes allergens like pollen, dust, and dander, while the ultraviolet lights kill airborne bacteria and viruses. These two powerful purifiers work in combination with an odor-killing activated carbon filter. The ionizer minimizes pollutants without producing harmful ozone and can be manually turned on and off.

Most people are concerned about the noise level of an air purifier. This unit is whisper quiet at its lowest speed, but somewhat louder on medium or high setting. In a living room you can hardly hear it running. The white noise it provides at night is pleasant for sleeping.

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This unit cleans the air extremely well and is suitable for a room of about 200 sq ft or less. The controls are easy to use and there is an LED readout that lets you know when you need to replace the HEPA filters. The filters do last a long time. The replacement UV lamps are a bit pricey and some people substitute a less expensive brand with the same specs.

Many people find that an effective air purifier does wonders for relieving their allergy symptoms. Some buyers comment that this unit cleans so well, after a night of use the bedroom air feels fresher than the morning air outside.

Alen is known for making quality air purifiers and this model is no exception. It would be a good choice for smaller rooms.

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Here are some of the features of the Alen Tower Air Purifier T300:

• - Pre-filter/Allergy-HEPA Filters
• - Enhanced activated carbon filter for even greater odor removal
• - Effectively removes smoke, pollen, dust, animal dander, dust mites, molds, bacteria and viruses
• - Built-in ozone-free ionizer to effectively minimize pollutants
• - UV lamp for bacteria removal
• - 11 x 9 x 28 inches; 15 pounds

Here is what current owners have to say about the Alen Tower Air Purifier T300:

Michael Costa: “Living in Georgia with all the pollen I developed allergies. I would sit in my den watching TV and find myself getting stuffed up and congested. That all stopped (with no medications) when I got the T300. I have bought several air purifiers but only the Alen T300 has made a noticeable and lasting difference in the air quality in my home. I own 2 and sleep with one in my bedroom. I sleep much better and can actually breath freely all night. I have had no problems with either unit and highly recommend the Alen products to anyone looking for a top rated trouble free unit.”

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This appliance differs significantly from other air purifiers on the market. In fact, it is really more of a humidifier than an air purifier.

Unlike traditional air purifiers, this air humidifier and cleaner does not require changing filters. Instead, water is the filter. Water in the unit evaporates daily to humidify the air in a dry room. At the same time, dirt and dust particles adhere to the interior disk assembly and are collected in the lower housing as water evaporates. Operation requires a special additive that allows water to sheet off the rotating plastic discs.

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No claims are made about the percentage of impurities this unit removes from the air. The residue left in the water chamber shows that it’s collecting dirt and allergens. Buyers report that the air smells fresher when the unit is running. But is the Venta is doing enough air purification to justify the price? Hard to say.

The Venta must be thoroughly cleaned every few weeks. However, the task is made more difficult by the many hard-to-clean crevices in the unit.

Some users say that this is a quiet, simple, and well-built humidifier. Others complain that the simplicity of design is a real drawback. For example, the unit has no water level indicator, no shut-off when the water dries out, and no humidistat to turn it on and off automatically. While some people find the humidity maintains at just the right level, others notice excessive dampness. Because the unit is a combination humidifier and air cleaner, you can’t run one function without the other.

If you’re looking for an air humidifier, this may be one to consider. However, if you suffer from allergies and you want the true benefits of cleaner air, you should buy an air purifier with a HEPA filter.

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Here are some of the features of the Venta Airwasher LW24 Air Humidifier and Purifier All-in-one:

• - Uses no filter pads
• - Cleans with a consistently high level of effectiveness, as water doesn’t clog the way filter pads do
• - Extremely quiet – ideal for use in bedrooms
• - Visible purifying performance – pure water evaporates, leaving dirt trapped in the tank
• - Odorless – no smell of moldy filters or stagnant water

Here is what current owners have to say about the Venta Airwasher LW24 Air Humidifier and Purifier All-in-one:

Shelley Ureel: “This is my second Venta Airwasher I have purchased. They work as far as keeping the dust down. I keep it next to the bird cages to keep the feather dust down. The 10 year warranty is a plus… The only down side is having to fill it with water about every other day and then cleaning it about every 2 weeks.”

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The Honeywell 17000 does everything you could ask from a lightweight, portable air purifier. This model is recommended for filtering the air in a closed room up to 168 square feet (12 by 14 feet).

It uses two separate filters to remove smoke, pollen, dust, animal dander, dust mites, molds, bacteria, viruses, and odors from your home. The vacuumable HEPA filter lasts one to three years and the charcoal prefilter lasts about three months.

The LED monitoring system tells you how much life is remaining in the filters and when they need to be changed. Filter replacement is simple, and new filters can be ordered separately.

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It moves a lot of air without being too loud, circulating the room’s air about six times per hour. The unit has three speeds. On the medium or high fan setting this unit will add background noise, but on low, it is hardly noticable if it’s not right next to you.

The Honeywell 17000 is easy to set up and operate. You will quickly notice a crisper feel to the air and huge reduction in airborne dust.

Some buyers with asthma particularly recommend the unit, because it dramatically decreases the amount of allergens in the air and lets them breathe more easily.

This is a effective and quiet air purifier that delivers exactly what it promises, at a reasonable price.

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Here are some of the features of the Honeywell 17000 Permanent Pure HEPA QuietCare Air Purifier:

• - Removes up to 99.4 percent of bacteria and germs
• - New permanent lifetime true HEPA vacuumable filter
• - QuietCare technology for ultra quiet operation
• - 3 speeds with filter clean monitor
• - Recommended for medium rooms
• - 15.8 x 13.1 x 17.1 inches; 13 pounds

Here is what current owners have to say about the Honeywell 17000 Permanent Pure HEPA QuietCare Air Purifier:

Mary Mccarty: “I bought this air purifier after looking at many reviews. I found some that rated higher, but were quite a bit more expensive. This one had a HEPA filter, which is the most important feature for people with asthma or allergies, and the price was not so high that I felt it would be a financial stress during these economic times. After the first few days of use I was sleeping much better and my asthma was gone when I was at home. In addition, I wasn’t sneezing from the high pollen count! So, in conclusion, I’m very happy with my Honeywell air purifier. A very good purchase!”

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The Honeywell 18155 is an effective air purifier that is also relatively quiet. You will notice an improvement in air quality within the first 24 hours of use – you can actually smell the difference in the air.

The unit holds a true HEPA filter and a carbon pre-filter that keeps larger particles from clogging the HEPA filter while helping to reduce household odors. The 3-speed fan quickly removes dust, pollen, tobacco smoke, and cat dander from the air. The purifier also helps reduce airborne germs, bacteria, mold spores and fungus with up to 100-percent efficiency as well. Within a room up to 225 square feet, the air is fully processed once every 12 minutes.

The Honeywell 18155’s no-draft technology provides efficient air cleaning without the cool-air exhaust. The unit pulls in air from the room and blows out purified air at a 360 degree orbit. Unlike a fan, the air flow is not direct, though you may feel chilly if you are sitting close by.

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On the highest fan setting, the air purifier is about as loud as a dishwasher from a few feet away, if that. On medium and low, it’s very quiet and doesn’t interfere with TV viewing or conversation.

The unit is lightweight and easy to open when you want to access the filters and there’s an indicator that lets you know when the HEPA filter needs to be cleaned.

People who buy the air purifier to combat allergy symptoms usually find it very helpful, and many comment that their quality of sleep has improved. Households with pets appreciate the way the unit rids the air of doggy smells or litterbox odors.

You don’t really need to run the air purifier on high all the time. You can run it on high for the first day and perhaps while cleaning the house. At other times you can run it on medium or low setting and it will maintain air quality.

Buyers in general have no complaints about this air purifier except for noise. However, most people find it quieter than expected. Keep in mind that it’s a little unreasonable to expect no noise at all from an appliance that contains a motor and a fan.

This is a well-made product that can be a good investment for your home.

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Here are some of the features of the Honeywell 18155 SilentComfort Permanent, True HEPA Air Purifier:

• - Air purifier with hepa filter for rooms up to 225-square-feet
• - Quietly cleans the air with no cold exhaust draft
• - Easy to clean with household vacuum twice a year
• - HEPA filter never needs replacement
• - Electronic filter clean reminder
• - Removes up to 100-percent of bacteria and germs that pass through
• - 19-3/8 L by 19-3/8 D by 19-inch H

Here is what current owners have to say about the Honeywell 18155 SilentComfort Permanent, True HEPA Air Purifier:

P. Drew: “We are on our second SilentComfort Air Purifier. We have had one of these that ran 24/7/365 for about 8 years and the motor bearing finally gave out. I think that was a lot of use and we got our money’s worth on the first one. We replaced it with one exactly like it because we really missed the pleasant white noise it adds to our bedroom. Both the clean air and the soothing noise help us to sleep.”

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The Honeywell Round Air Purifier is a well-constructed machine that is designed for larger rooms. Some people purchase an air purifier to relieve allergy symptoms, while others simply want to breathe cleaner, odor-free air. This particular model gets lots of praise from buyers because it does its job very well.

The true HEPA filter in the air purifier efficiently rids the air of pollen, cat dander, household dust, and mold spores, as well as filtering out many airborne bacteria and germs. In addition, the charcoal pre-filter removes smells from tobacco smoke, cooking, pets and plants. Warning lights will come on when the HEPA filter or pre-filter need to be cleaned or changed. This helps you to maintain your machine in excellent working order.

The Honeywell unit moves a lot of air. The air enters into and flows out of the unit in a 360 degree pattern, so the air purifier needs to be placed where the air flow is not disruptive to nearby objects or people.

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The two factors that may discourage people from buying this model are its size and its noise level. The unit is larger than some people realize – check the measurements to gauge how it will fit into your room.

Everyone agrees that the unit makes noise; however, opinions differ on how irritating the noise is. What is “too loud” to some people is quite acceptable to others. Some people say that the unit’s sound becomes white noise that you can tune out after a while. Others find it loud enough to make conversation or TV watching difficult. Where you place the unit will affect the overall noise level, of course.

The fact is that all air purifiers make some noise. You are the only one who can decide whether the benefits of cleaner air outweigh the minor annoyances. Many buyers find that their allergy symptoms are greatly improved after this air purifier has been working.

If you don’t mind the size and the noise level, this is a very effective air purifier that will help keep your home environment cleaner and healthier.

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Here are some of the features of the Honeywell 50250 99.97% Pure HEPA Round Air Purifier:

• - Electric air purifier for large rooms; removes 99.97 percent of particles passing through
• - Removes up to 99.4 percent of tiny particles like bacteria and germs
• - Lifetime True HEPA filter vacuums clean for easy maintenance
• - Patented 360-degree air intake and discharge for purifying large areas
• - 3 speeds with filter-clean monitor; accepts #38002 charcoal and #24000 HEPA filters
• - Dimensions: 18 x 18 x 19.6 inches; 23 pounds

Here is what current owners have to say about the Honeywell 50250 99.97% Pure HEPA Round Air Purifier:

Anonymous: “While this product has both pros and cons, having lived with it for a month, I’m VERY pleased with its overall performance. There is absolutely no dust visible in the air, even when looking for some particles near a sunlit window. None. Zero. The unit is fairly large, about half the size of a steel garbage can brought to the curb. This may be an issue for some people, but conversely, a smaller unit would not move (and therefore not filter) as much air…. We are very happy with the unit, and will buy additional units for other areas of the house in the future.”

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