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A high quality air purifier will not only filter unpleasant odors, but it can actually trap dust particles, thus preventing the appearance of dust mites.

Smoke Removal

If you are a smoker or you have friends who smoke when they visit you, it would be wise to invest in an air purifier which features an activated carbon filter.

Room Size

Make sure to choose one which can cover the size of the room where you plan on using it. Some are suited for small rooms, while others can cover even very large rooms.

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Top 5 Air Purifiers Comparison

Alen BreatheSmart for Allergies and Dust Honeywell with Allergen Remover HPA300 RabbitAir MinusA2 Ultra Quiet Air Cleaner Electrolux Oxygen Ultra Air Cleaner Anti-Odor Pet GermGuardian AC4825, 3-in-1 Air Cleaning System
Alen BreatheSmart Image
Honeywell with Allergen Remover HPA300 Image
RabbitAir MinusA2 Image
Electrolux Oxygen Ultra Image
Germ Guardian AC4825 Image
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Technical specifications

Filtration Type & Technologies
HEPA Pure Filter, WhisperMax, SmartSensor Technologies
True HEPA Filter, Allergen Remover, Activated Carbon Prefilter
BioGS HEPA Filter
HEPA Filter, Carbon Filter, PlasmaWave Technology
True HEPA, Carbon Filter, UV-C, and TiO2, UV-C Technologies
Filtration Rate
Removes Up to 99% of Particles Greater than 0.3 Microns
Captures 99.97% of the Microscopic Particles of 0.3 Microns and Larger
Traps Up to 99.97% Air Borne Particles Larger than 1 Micron in Size
Capturates 99.97% of Airborne Dust, Allergens, and Bacteria
Eliminates Up to 99.97% Dust and Allergens as Small as 0.3 Microns in Size
Area Coverage(square feet)
Normal Residential Use=700, Allergy Sufferers=350
Noise Levels
41.5 dB(whisper), Speed 2:44 dB, Speed 3:50 dB, Turbo:56 dB>
20.8 to 45.6 dBA
Air Changes per Hour
2 for Residential Use of Room Coverage, and 4 for Allergy Sufferres Use 408 sq. ft Room Coverage
Energy Consumption on Highest Speed (Watts)
7 to 47
Filter Life
8,9 Months
Up to 1 Year
2 Years
6-12 Months
9 Months


Certifications and Listings
Energy Star Certified
ETL Listed, Energy Star Certified
Energy Star Certified, ETL Listed
Energy Star Certified
Energy Star Certified, Safety Certified by Intertek
UVC Lamp
Number of Speeds
3 Plus a Turbo Clean Setting

Convenience Features

Stand By Mode
Stand By Mode
4,8,12 Hour Timer
Automatic Shut-Off Timer 2,4, and 8 Hours
8-Hour Timer
Air Quality Sensor
Electronic Filter Change Reminder
Other Features
Handle for Easy Moving, Digital Display, Auto Off Safety Feature
Control Panel Light Dimmer, Easy to Use&Clean, Portable
It Can be Mounted one the Wall and it Can Also Stand Alone, Child Proof Safety Design, Very Quiet in Operation, Washable Pre Filter, Multicolor Mood Light, Light Sensing Sleep Mode
Easy to Use&Maintain, 3-Stage Filtration, Remote Control, Easy Carry Handle
3-in-1 Filtering System, Quiet operation, Very Easy to Maintain


17.75 x 10 x 26.75
20.8 x 10.83 x 22.38
20,25 x 7 x 21,4
17.6 x 10.08 x 24,29
5.5 x 9 x 21.5
Cord Length(feet)
Available Colors
15 Colors
White/Metallic Silver

Warranty and Support

Lifetime Warranty on Parts and Labor
5-Year Limited Warranty
5-Year Warranty
5-Year Warranty
3-Year Warranty
Customer Service
User Manual
Quick Start Guide
Complete Owner's Guide
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Do not Buy Before Reading This

These days, you breathe an unhealthy air outdoors and indoors as well, and this can definitely have a negative impact on your health. The good news is that you can avoid this, at least indoors, by using an air purifier. How do you know exactly what model will provide you excellent results? If you are interested in purchasing a device like this, and you do not know how to make the right choice, then take a look at the following information, for a better understanding of all the models that can be found on the market these days.

Categories of air purifiers

When it comes to the indoor air purification, you have two choices. Depending on your needs, you can choose one type or another. Therefore, read the following information, so that you know exactly what's the best choice for you.
  • Room air purifiers
  • Room air purifiers are the most popular units for purifying the indoor air. They do a great job, and they are also portable, which means that you can easily move them from a room to another. Most of them weigh between 10 and 20 pounds, and they also have a handle. Heavier models usually come with wheels which allow you to move them around the house easily and quickly as well. Some of these models feature a HEPA filter which is a highly efficient one as it can actually capture ultrafine particles. However, keep in mind that some of these filters need to be replaced annually, whereas others are cleanable. Therefore, if you decide to go for a room purifier, then it is highly recommended to go for one that comes with a HEPA filter. There are some disadvantages as well, when it comes to these devices. For example, those units that use the electrostatic-precipitator or the ionizer technology, might produce some ozone, which is a lung irritant. Furthermore, if you have a very big house, then these units will not provide you the desired result, unless you run them for several hours, which will certainly raise your energy costs.
  • Whole-House air filters
  • Those who have a forced-air heating and cooling should definitely go for a specialized filter, which is an inexpensive alternative to a built-in house device. It will actually act like a furnace. You will find on the market conventional fiberglass filters, whereas others are electrically charged or pleated, to pick up the harmful particles found in the indoor air. Whole house air filters come in different sizes, but even so, you might need to modify your ductwork, for a perfect fitting.

Types of filters used by air purifiers

There are several filter types that air purifiers use in order to remove contaminants from the indoor air. Take a look at them, in order to know exactly which one will meet all your needs.
  • HEPA(high efficiency particulate air) filters
  • These are without a doubt the best filters that can help you obtain excellent results. Air purifiers that have a HEPA filter will remove up to 99,97% of all particles as small as 0.3 microns. Furthermore, allergens and dust will also be eliminated. The disadvantage is that you must change this filter periodically, and units that come with such a feature are more expensive than other models. Some of the best units that use a HEPA filter are the Germ Guardian AC 4825, Electrolux Oxygen Ultra, and Alen BreatheSmart.
  • Activated carbon filters
  • They are actually rarely used alone to purify the indoor air. They are used in conjunction with other types of filters. They excel at removing odors and gases as well. Furthermore, they will easily and quickly neutralize fumes, smoke, and chemicals as well. Keep in mind that the larger the carbon filter is, the more chemicals it will absorb.
  • Antibacterial and germicidal filters
  • This is another type of filters that air purifiers use. As the name says, they eliminate bacteria and germs from the indoor air. They are also great for controlling mold. There are a few models that use such a filter. For example, the Germ Guardian AC5000 air purifier, or the AirPura UV600 device, will definitely provide you amazing results.
  • Charged media filters
  • These filters are actually a combination of 2 technologies. They contain a particle filter and a slight electrostatic charge. The great advantage of these filters is that they will efficiently remove particles as small as 0.1 microns. The disadvantage is that they lose their efficiency quite quickly, and therefore, you will need to replace them a lot more often than you would do with HEPA filters or other types.

Important features

If you want to make sure you will choose a quality device, then you need to take into account the most important features that your product must have. Therefore, go for a device that comes with programmable timer, a servicing indicator, a carrying handle, a remote control, and a dirt sensor as well. Furthermore, a ionizer would be absolutely great, as it will actually attract particles via an effect similar to the static electricity. However, make sure it doesn't produce ozone, as this is a lung irritant. It is also highly recommended to look for air purifiers that have a washable pre-filter, so that you can cut your overall costs.

Health benefits

These days, our bodies are exposed to small amounts of toxins, organic pollutants, and carcinogens as well. These can definitely lead to serious health problems, and also to premature aging. Therefore, it is essential that you make sure the air in your home and in your office is a very clean one. This will definitely have a positive impact on your overall health. Once you will not inhale any sort of pollutants anymore, you will start to feel a lot better. You will breathe with ease, your skin and eyes will not be irritated anymore, and you will feel more energetic as well. A clean indoor air will make you feel extremely relaxed and comfortable, and it will also help you sleep better. You will rest very well at night, and once you experience a deep and restful sleep every night, your entire life will highly improve. You will be able to concentrate better at work and have a more positive thinking. All in all, a quality air purifier will definitely help you stay healthy and also help you live a quality life.

What we based our reviews on

  • Filtration type
  • All the products we have reviewed feature a HEPA filter, which is considered one of the most efficient filters these days, due to the fact that it can efficiently remove very small particles from the indoor air. The Honeywell with allergen remover HPA 300 is the number one recommended air purifier due to the fact that it can capture up to 99.97% of microscopic allergens as small as 0.3 microns. No other device of this type can capture that many and that small particles, and this is why this is a highly recommended unit.
  • Filtration rate<
  • Most air purifiers can cover up to 400 square feet, but if you have a big home, then there are also some models that can cover up to 1000 square feet as well. The AlenBreathe Smart is one of the most powerful air purifiers we have reviewed, as it can cover up to 1100 square feet. This device does a pretty good job, due to its great HEPA filter, and it is highly recommended for people with big homes or offices.
  • UVC Lamp
  • This is a very important feature that not too many air purifiers have. The GermGuardian AC4825 is one of those units that has this feature, and this is actually one of the main reasons why it is considered absolutely great. The UV-C light will kill viruses and bacteria, including streptococcus, E.coli, and rhinovirus. Furthermore, this lamp will highly sanitize the indoor air by permanently destroying the DNA of germs, so that they die.
  • Multiple levels of cleaning
  • One of the best air purifiers that features multiple levels of cleaning is the GermGuardian AC4825. In comparison with other products we have reviewed, this one has a pre-filtercombined with a charcoal filter that will efficiently capture 99.97% of airborne particles, as tiny as 3 microns in size. The third level of cleaning is actually the UV-C light, which will highly sanitize the indoor air, by killing bacteria and viruses.
  • Filter life
  • When choosing an air purifier, it is essential to look at the the filter life. Based on the products we have reviewed, the device with the longest filter life is the RabbitAir MinusA2. The unit has a 2-year filter life, which is absolutely great, in comparison with most units that have only up to 1-year filter life.
  • Warranty
  • Most of the air purifiers that are available on the market come with a warranty between 3 and 5 years. However, we have also reviewed some products that come with a lifetime warranty on parts and labor. The AlenBreathe Smart is one of those air purifiers that, as mentioned earlier, comes with a lifetime warranty.

Top Rated 2017 Air Purifiers Available on the Market at the Moment


1. Alen BreatheSmart

The most important thing you need to know about this device is that it comes with a HEPA filter, which is considered one of the best ones. Due to the SmartSensor Technology that this device uses, airborne allergens and pollutants will quickly be detected and eliminated. The airflow will automatically be adjusted based on the level of potentially dangerous air particles, while it actually stays eco-friendly. This is a wonderful feature that not too many air purifiers have. The Alen BretaheSmart features a handle for easy moving, a digital display, and an Auto Off safety feature. It is very easy to use and maintain, and it also operates quietly. No other product of this type has so many colors like this one. The Alen BreatheSmart is available on the market on 14 wonderful colors. Furthermore, this is the air purifier that comes with a lifetime warranty, and with a very large area coverage of 1100 square feet. Overall, with this unit, you will not obtain anything else but excellent results.
Honeywell with Allergen Remover HPA300 2

2. Honeywell with Allergens Remover HPA300

This is considered one of the best air purifiers due to the fact that it can capture up to 99,97% of microscopic allergens, odors, and certain airborne germs. The unit can provide these results due to the fact that it uses the pre-filter HRF-AP 1, and the True HEPA filter HRF-R3. Airborne particles such as pollen, pet dander, mold spores, smoke, dust, and so on, will quickly and efficiently be removed, so that you can breathe a healthy air at home. This unit features a control panel light dimmer, an automatic shut-off timer, and 3 air cleaning levels plus a Turbo Clean setting. The Honeywell with allergens remover HPA300 has a 5-year warranty and it is Energy Star qualified. All in all, with an air purifier like this you will certainly enjoy the benefits of a fresh, clean, and contaminants-free indoor air.
RabbitAir MinusA2 3

3. Rabbit Air Minus A2

The Rabbit Air Minus A2 has a versatile design that will allow you to actually hang the device on the wall, instead of placing it on the floor. This is a huge advantage, especially for those with a limited indoor space. This is the only air purifiers between these 5 that can be hanged on the wall. Therefore, if this is what you are looking for, then consider this model. Furthermore, you will also like the fact that operates quietly, which allows you to use it while sleeping as well, without disturbing you. It can do a great job in rooms up to 300 square feet. Due to the fact that it can produce over 3 air changes per hour, the Rabbit Air Minus A2 is absolutely perfect for allergy sufferers. Unfortunately, this device lacks an operation timer, which actually means that you will not be able to program it to operate at a specific time. However, you will certainly like the other features of this device, including a sleep mode, an auto mode, and a filter monitor.
Electrolux Oxygen Ultra 4

4. Electrolux Oxygen Ultra

The Electrolux Oxygen Ultra AC4825 is one of the most efficient units in its class, due to the fact that it uses a small amount of energy in order to operate. Furthermore, unlike the other air purifiers, this model features the PlasmaWave Technology, which actually uses positive and negative ions in order to efficiently eliminate odor-causing airborne pollutants. Due to the 3-stage filtration, the indoor air will be filtrated very well through a carbon pre-filter, through a HEPA filter, and then through the Plasma Wave as well. This entire process will help you eliminate up to 99.97% of airborne dust. The Electrolux Oxygen Ultra AC4825 is very quiet, easy to clean and to maintain as well. Furthermore, it is available on the market with a 5-year limited warranty. For an optimum performance, it is highly recommended to change the HEPA filter once a year, and the carbon filter every 3 months. You will know exactly when to do that due to the clever filter changing indicator that this device has.
Germ Guardian AC4825 5

5. Germ Guardian AC4825

Just like the other products, the Germ Guardian also uses a HEPA filter, which will capture up to 99.97% dust and allergens as small as 0.3 microns in size. The charcoal filter will reduce the unpleasant odors from cooking, pets, and smoking as well. In plus, this device uses an UV-C light Technology, that actually works with Titanium Dioxide in order to efficiently eliminate viruses, airborne bacteria, mold spores, and germs as well. This air purifier is Energy Star Certified and also Safety Certified by Intertek. Furthermore, it features an ultra-quiet operation and indicator lights for the filter. With its attractive design, and it clever features, the Germ Guardian AC4825, will definitely manage to find its place in any home. The manufacturer offers for this product a 3-year warranty, which is quite similar to the warranties of other air purifiers.