Best Air Purifier 2018
top 5 Best Air purifer 2018 comparison table.
|Name||What's Good||Cover Area||Filter||Technology|
|GermGuardian AC4825||Allergen and Odor Reduction||155+ Sq. feet||Pre, HEPA, Charcoal||UV-C||Check Price|
|Honeywell HPA300||Large room coverage||465 sq. ft.||Pre, HEPA||activated carbon pre-filter||Check Price|
|Germ Guardian AC5000||Best for Allergy||medium, Large||HEPA, UV-C , Charcoal||UV-C Light||Check Price|
|Coway AP-1512HH Mighty||True HEPA and Eco Mode||528 Sq. ft.||Pre, Carbon, True HEPA, Vital Ion||particle sensing||Check Price|
|Winix WAC9500||Best Cleaning System||210 sq. ft||Pre, HEPA, Charcoal, CleanCel||PlasmaWave||Check Price|
1. GermGuardian AC4825 – True HEPA Air Purifier 2018
The 3-in-1 filtering system keeps away unwanted odors, keeps the air clean, and helps thwart harmful breeding of bacteria and mold. With an indicator light, one is always aware when to change out filters to help the purifier function optimally.
Slim profile – quiet on the first two settings – third setting the noise of the fan is noteworthy – It has UV light and is “True HEPA” — if one could repeat the purchase, people would have been willing to shell out more money and got the Germguardian Elite 4 in 1– the UV light is flashing and efficient – it is an elongated tube as opposed to the-the Germguardian AC4825 which is merely a small bulb
Compact bedroom capacity – The 155 sq. Ft. room capacity conveniently recirculates fresh air continuously entirely through a single, small bedroom.
Be aware when to change a filter or bulb – A light indicator switches on and glimmers when the filter or UV-C lamp is in need of replacement.
Helps to eliminate airborne disease-causing microbes and eradicates odors – The UV-C light functions effectively to eradicate airborne microbes and bacteria, while also lessening usual household stench emanating from domesticated pets, cooking and smoking.
Helps thwart bacterial growth – A charcoal filter helps to effectively limit and thwart the growth of bacteria, microbes, and mold.
Low noise – Noiseless operation of the air filter helps keep the volume of noise to a minimum level.
True HEPA filter – The air filter helps in capturing nearly 99.97% of dust and allergy-causing particles. There are varying levels of capturing and cleaning out allergens, eradicating airborne microbes and bacterial pathogens.
The air filter is Energy star certified. There is a limited warranty on labor and parts of the product for three years.
An air purifier is a fundamental gadget because it purifies indoor by separating pollutants including dust, volatile organic compounds (VOCs), and allergens such as pet dander. However, only a quality air purifier can effectively improve the quality of indoor air. Below is some more information on this topic.
2. Honeywell HPA300
Honeywell air purifiers are considered by doctors as a crucial part of a total allergy treatment program. The most efficient air purifiers retain 99.7% of the tiny particles (0.3 microns and greater) that go through their filters.
Honeywell HPA300 air filters are capable of keeping airborne particles such as dust, pollen grains, smoke emanating from household activities, pet dander and mold spores. Certain models have passed a test to trap disease-causing germs from the air passing through the air filters.
These air filtering products utilize a mechanical filtration process — which means that a fan sucks in particle-laden air into the compact unit and makes the air pass through a Honeywell HPA300 filter, cleaning and recirculating the air in a room multiple times an hour.
And, Honeywell True HEPA air purifiers do not recirculate ozone back into the air after the filtration process is complete, making them the perfect air purifier for patients suffering from breathing difficulties.
- A silent fan sucks room air into the compact unit, circulating and cleaning the air multiple times an hour.
- The air then goes through a stench absorbing pre-filter to lessen unwanted odors and trap big particles like dust, pet dander or lint.
- The air passes through highly efficient True HEPA filters that capture up to 99.97% of particles, 0.3 microns or larger, from the air that passes through the filters.
- Clean, fresh quality air is recirculated back into the room.
Every Honeywell model is about 99.97% effective in capturing microscopic harmful particles, 0.3 microns or greater, from the air that goes through the filters.
Easy tap electronic controls with about three levels of air cleaning added with Turbo Clean setting & 2, 4, & 8-hour timer. Electronic filter replacement reminders are a bonus.
A majority of physicians that suggest a brand of air purifier for treatment prefer the Honeywell brand.
3. Germ Guardian AC5000E
The GermGuardian AC5000E is a 28-inch tower that offers multiple levels of cleaning to provide fresh and clean air to breathe in. Not only does it kill airborne bacteria and viruses, but it also gets rid of allergens, odors and mold spores in the air. Rated 125+ by CADR, the air purifier works very well in medium to large rooms.
What’s impressive about the GermGuardian is that it is capable of running in an ultra-quiet mode, thereby making it ideal for use during sleeping hours as well.
The True HEPA filters of AC5000E captures at least 99.97% of the allergens present in the air. This includes household dust, mold spores, pollens from plants, pet dander and even particles that are as small as 0.3 microns (regarding size). By getting rid of up to 99.97% allergens, the filter improves the air quality drastically.
What’s more, it is not just one layer of filtering from the True HEPA filters because the device has a Charcoal Filter present inside too, which reduces the odors and conducts its level of cleaning. Then there is the pre-filter which captures the larger particles present in the air, like pet hair and lint.
Another unique feature of the GermGuardian AC5000E which makes it so worthwhile is its UV-C light feature. UV-C light is something that is used in hospitals to sanitize. It has been proven to kill airborne viruses and bacteria by permanently damaging their DNAs. Also, the filter does not emit ozone.
There are many reasons to get the AC5000E. Not only does it make an excellent addition to your home but it also works very well as a gift, especially for smokers. Also, the filter is deficient maintenance because it is easy to clean. One simply has to take out the filter and wash it in the sink. After that, just allow it to air dry and pop it back into the filter and you’re ready to go!
4. Coway AP-1512HH
The powerful Conway AP-1512HH Air Purifier is designed to fit a relatively small space but comes along with sophisticated aspects to help keep the indoor air free of impurities. Assembled with a HEPA efficiency success of nearly 99.97%, it utilizes a four-stage filtration system to be effective in eradicating odors and indoor air pollutants.
This robust machine comes with an air quality indicator through the particle sensing technology that will enable the air purifier to function at a high capacity when the need arises. And when air pollution is not indicated for half an hour, the fan will stop all by itself to conserve energy.
Brilliant, cutting edge Technology – The fan automatically controls the flow of air when air pollutants are indicated in the air, allowing people to have mental peace that the indoor air quality of the room is always under watch.
Air Quality Indicator – The sensitive Air Quality Indicator makes use of particle sensor technology to control and since the indoor air quality, and responds with a sharp and noticeable change of color to indicate the present condition of the air.
Filter Change Indicator – When it’s about time to replace the air filter, the Coway Filter Change Indicator will illuminate; making sure that purified air is always in circulation. Always replace the Carbon filter about semi-annually and the HEPA filter every year.
The Coway AP-1512HH can be shipped within the U.S territories, and not eligible for international shipping, and must be shipped separately from other products contained in the order.
The product has five settings, with an ionizer as an option for each of the settings. There’s a small, medium, and high-end settings, with low being the tranquil mode letting out a light breeze, the medium being a soft noise equivalent to a car fan on maximum setting, and high being a fan sound easily heard, compared to noise of a functioning refrigerator.
5. Winix WAC9500
The Winix WAC9500 is a home air filtration system designed for home use. It also makes an excellent filtration system for pet owners, who want to reduce hair, dander, and pet odors in the home. This home air purifier runs on two AA batteries.
There is no need to look for an available outlet. It’s designed for use in a single room, with HEPA filtration, washable pre-filter, and washable carbon filter. The technology behind this machine is plasma wave, which uses charged ions to draw odor and dust particles from the air.
Controls can be operated from the appliance or from a remote control device. It also features an LED alert, indicating the filter needs to be changed.
Buyers say the purifier works as it should, in an average sized room. Some users can’t sleep near the machine, as it dries out the air too much A solution is to move it several feet from the sleeping area. Buyers are happy with the machine’s overall performance.
It removes pet odors and smoke in a sufficiently short time. Allergy sufferers have had success using this device at night. Some customers mention the one year warranty. Buyers must pay for return shipping, as with most products purchased online.
The Winix WAC9500 has received very few complaints. One customer had to replace a non-functioning unit after seven months of use. Another customer took the machine apart to clean it, indicating it does a poor job of removing dust particles.
A few buyers say it does a poor job of filtering pet hair. Overall, customers are happy with the machine’s performance and price. There are no serving costs, other than the 2 AA batteries. At 16 x 21 inches, the unit is small enough to sit on a table, dresser, or countertop, if additional space is available.
How Air Purifiers Work
In general, air purifiers use fine sieves called air filters to trap and remove contaminants from the air. As such, air purifies with finer sieves are generally more efficient because they are able to trap smaller pollutant particles. Examples of indoor air pollutants include pathogens, bacteria, viruses, antigens, bad odors, toxins, irritants, and VOCs. With this in mind, the US Department of Energy (DOE) has set air purification benchmarks that manufacturers of air purifiers must meet.
For instance, air purifiers based on HEPA technology must remove at least 99.97% of air pollutants larger than 0.3 microns. A micron is a unit utilized to measure the size of air particles and it is equivalent to 1/25,400 of an inch. Other common air purifying technologies include Thermodynamic Sterilization (TSS) and Ultraviolet Germicidal Irradiation (UVGI).
Some of the fundamental factors to consider when shopping for an air purifier include:
There are primarily two types of air purifiers: room air purifies and whole-house air purifiers. The former is typically smaller and less expensive compared to the latter. According to Consumer Reports, a room purifier is a right choice if your home does not have a forced-air heating/cooling system or if you are shopping for an air purifier that you can move from room to room.
On the other hand, a full-house air purifier is an ideal choice if your home has a forced-air heating system. At this point of view, it is worth mentioning a sub-category of room air purifiers called dedicated ozone generators that are designed to emit an appreciable amount of ozone.
However, the US Environmental Protection Agency (EPA) warns consumers to avoid such air purifiers because ozone can damage the lungs and worsen chronic respiratory diseases such as asthma when inhaled. Healthy people can also experience breathing problems after inhaling ozone.
Also, a research published in the New England Journal of Medicine found that exposure to even low levels of ozone increases the risk of developing severe health conditions including pneumonia and chronic obstructive pulmonary disease.
- Air filtration technology
Commercially available air purifiers vary widely depending on the type of air filtration technology deployed. Presently, HEPA technology is probably the most widely used technology in air purifiers. This technology was basically developed by the US Atomic Energy Commission to remove radioactive dust particles from the air.
HEPA filters are manufactured from finely woven glass particles that form a pleated surface area for trapping air pollutants larger than 0.3 microns. Although HEPA filters are highly effective, they are expensive because they require replacing after 12 to 18 months depending on usage.
The cost of a single HEPA filter ranges from $70 to $125. Moreover, the dense structure of HEPA filters means they are not as energy-efficient as other types of filters.
Besides HEPA technology, some air purifiers use Ultra Low Penetrating Air (ULPA) technology. Simply put, ULPA is a stricter version of HEPA air filtration technology that was developed for use in hospitals and “clean rooms” such as those found in the semiconductor manufacturing sector.
Another category of air purifiers uses activated carbon filters to remove air pollutants found in indoor environments. To achieve this goal, they rely on carbon treated with oxygen thereby opening millions of tiny pores that are ideal for absorbing/bonding with pollutant particles. Air purifiers that use charged media filters, in essence, rely on two technologies: an electrostatic charge generator and a particle filter.
Unlike air purifiers with HEPA filters, those with charged media filters can trap particles as small as 0.1 microns. The downside is accused media filters lose their efficiency quickly. Some manufacturers produce air purifiers that use antibacterial and germicidal filters, which are simply HEPA filters treated with chemical compounds that can kill harmful microorganisms such as bacteria.
Photocatalytic oxidation (PCO) is another type of air filtration technology that is based on a metal plate coated with titanium dioxide and uses UV light to break the chemical bonds that hold pollutant molecules together. Other types of conventional air filtration technologies include electrostatic precipitator, ion generator, photo plasma, polarized media electronic and titanium dioxide air filtration technology.
The size of an air purifier is calculated using the Clean Air Delivery Rate (CADR) metric, which was produced by the Association of Home Appliance Manufacturers (AHAM). In essence, CADR is a metric based on a number of cubic feet of air an air purifier can filter per minute. As such, a high CADR figure means a more efficient air purifier and vice versa. To calculate the CADR for a room, multiply its square footage by 0.75.
The features of an air purifier typically vary depending on the product size, model, and brand. Still, one of the most common and useful features is a fan for sucking in air. An article published by Consumer Reports states that air purifiers without fans tend to work poorly compared to purifiers with fans.
Another useful feature is a servicing indicator to alert you when it is time to replace essential parts such as the air filter. Other key features found in air purifiers include a dust sensor, UV-C sanitizer, filtering frequency controller, and air quality monitor. Fortunately, consumers can use product comparison sites to evaluate and compare air purifier features. This is in addition to comparing the prices of different air purifiers.
Some of the essential considerations when shopping for an air purifier include the air filtration technology, size, type, and features. Most of the air purifiers in the recent market today use High-Efficiency Particulate Air (HEPA), Ultra Low Penetrating Air (ULPA), activated carbon filter, charged media filter, antibacterial and germicidal filter, photocatalytic oxidation, ion generator, ozone generator, electrostatic precipitator and titanium dioxide air filtration technology. However, you should avoid air filters that use ozone generator filters because they tend to increase the risk of developing respiratory diseases.