The best air purifiers can do wonders to relieve those of you who suffer from allergies or asthma. They can remove pollen, dust, pet dander, smoke, mold spores, and other allergens from the air – giving you fresh, clean air to breath. When shopping for one you should look at the clean air delivery rate (CADR) which measures how fast a filter can clean smoke, pollen, and dust and thus determining the suggested size in square feet of the room to be cleaned. A CADR rate over 350 is considered excellent, while anything under 100 is quite poor. The best models also contain HEPA filters that capture 99.7% of pollutants as small as 0.3 microns. You should also know how much replacement filters cost, because they can be expensive and you will have to replace them unless you buy one that can be cleaned. Other things to consider include the noise level, number of fan speeds, dust monitor or air quality sensor, and length of warranty. The more you suffer from breathing problems like allergies or asthma, the more you should invest in your purifier or air filtration machine.

The top models sell for around $1000, while there are many cheaper options as well, especially ones designed for a smaller room. We looked at and graded dozens of models to come up with our list of the top 10 best air purifiers which we review below. The IQAir New Edition HealthPro Plus is our choice for the best air purifier. It is a bit expensive at around $900, but its performance is second to none and for people with allergies it is worth every penny. The maximum coverage area for this air filtration unit is 1125 square feet, which is far superior to all other models on our list. It has three different filters – a pre-filter, hyper HEPA filter, and a V5 cell gas and odor filter – which can each be replaced separately. The HEPA filtration is certified to filter 99.5% of particles down to .003 microns – the smallest particles that exist. The filter change indicator light will show green, orange, or red to specify filter life left. It has six different speed settings of which only the top 2 would really be considered noisy.

One great feature not available on many models is the control settings. You can program the machine to turn on and off at certain times and at specific fan speeds. Despite an annual filter replacement cost of approximately $200, in addition to the asking price, we feel the IQAir New Edition HealthPro Plus is worth the money and we highly recommend it unless your budget is truly limited. The Blueair 650E is recommended by the leading consumer magazine and will cost about $850. It also scored the highest average rating on Amazon with 4.6 stars out of 5. The 650E scored the highest CADR scores possible and is rated for rooms up to 698 square feet all while being quieter than other similar priced models like our #1 choice. Four speed settings are available with only speeds 3 and 4 being slightly noisy. It comes with 3 HEPASilent filters which contain a small amount of activated carbon capable of capturing 99.97% of particulates down to 0.1 microns. There are replacement filters available that have more carbon which is better at reducing smoke, gas, chemical, and odor control.

Filters cost between $75 and $150 and Blueair recommends that you replace them every six months. We recommend the Blueair 650E for people who need outstanding air cleaning combined with quiet operation and is an ideal choice for large bedrooms.best air purifiers for weed smoke The original Blueair model, the 503, will cost $659. air purifier collegeIt comes highly recommended from the leading consumer magazine and also tied for the highest rated air purifier on Amazon with 4.6 out of 5 stars. where can i buy air purifier in dubaiThe main differences between this and the 650E is the recommended room size of 580 square feet and lack of digital programming controls. It uses the same HEPASilent filters as the 650E, while SmokeStop filters are also available.

One slight negative is that the seal around the filter is not perfect, so some air can slip passed the filter thus reducing the cleaning efficiency. We recommend this model for someone who wants outstanding performance, has a smaller area to purify, and does not need programmable controls. Our selection for the best budget air purifier is the Whirlpool AP51030K Whispure. The leading consumer magazine gave it its highest score and rated it as a Best Buy with one big factor being the cheaper price tag of under $300. It has a coverage area up to 500 square feet, a certified CADR rate of 315, and includes a charcoal pre-filter with a HEPA filter which can capture 99.97% of particles down to 0.3 microns. The pre-filter does not have enough carbon to eliminate all odors and needs to replaced every 3 months. The HEPA filter should be replaced once a year and the combined filer replacement costs are about $125 per year. Featuring four speeds, it is one of the quietest units available even on a turbo speed 4 setting.

While it does not purify the air as well as the top tier models, we recommend this Whirlpool model for people on a more limited budget who still need a very quiet machine. The Winix PlasmaWave WAC9500 is a solid performer in the mid-tier price range of $260. It can cover a room up to 284 square feet with advanced controls that let you set it up the way you want including an auto-mode which will adjust the machine to the needs of your environment. There are 4 fan speeds with the top 2 being a bit noisy. It also features 5 stages of cleaning including a washable pre-filter, a 99.99% effective true HEPA filter, a nano silver anti-microbial filter treatment, washable advanced odor control carbon, and PlasmaWave technology. The filters are all built into one filter cassette that will need to be replaced once a year on average at a cost of just over $100, while you should also wash the pre-filter and carbon filter every 3 months. The PlasmaWave technology is designed to attack pollutants at a molecular level without producing harmful ozone, however some users have complained that this feature emits a quiet, but high pitched noise that is annoying.

While it does work well at removing dust, pet hair and dander, The WAC9500 does not work great at removing serious chemicals, gases, or strong odors due to its small amount of carbon. The Winix PlasmaWave WAC5300 is the top selling HEPA filter air purifier on Amazon and sells for $135. It features 3-stage air cleaning that will work for a room up to 350 sq ft. The three stages include a carbon pre-filter, a HEPA filter, and PlasmaWave technology. The carbon filter should be replaced every 3 months and the HEPA filter once a year at a total cost of about $80. One thing we like is the sensors and controls like the filter change indicator, air quality sensors, sleep mode, and auto mode which are not usually found on a unit priced this affordable. The noise level is decent, but is really quiet in sleep mode if you use it in your bedroom. The WAC5300 does not offer superior air cleaning performance, but it does offer one of the best overall values you can find in an air purifier.

The Honeywell 50250-S is certified for rooms up to 390 square feet and costs about $145. It comes with a carbon pre-filter and true HEPA filter that scored CADR ratings of 250 for smoke, dust, and pollen. The carbon filter needs to be replaced about every 3 months at less than $10 each, but the HEPA filter can be vacuumed to extend its life from 3 to 5 years and be replaced at a cost of around $50. While it does have decent air cleaning performance, the biggest complaint about the 50250-S is the noise level which is bad even on low speed settings. Another recommended model from the leading consumer magazine is the $136 Holmes HAP756-U. It is rated for rooms up to 416 square feet with a CADR smoke rating of 270. It has 4 speed settings and a digital timer. The noise level is very good at low speed settings, but only average on the higher settings. Comes with two filters including a pre-filter and true HEPA filter with replacement filters costing less than $50 per year. The Hamilton Beach 04383 is our choice for best air purifier under $100.

This is also the best selling air purifier on Amazon. It is recommended for rooms up to 160 sq ft. It has a HEPA type – not a true HEPA – filter that captures up to 99% of particles down to 0.3 microns and can be vacuumed, thus never needing to be replaced. The noise level is average across the 3 speed settings. Once you get into this price range it is hard to get a quality product that truly reduces air pollutants, so we only really recommend this model for people on a strict budget. For those of you with allergies or breathing conditions we strongly suggest you buy a more expensive true HEPA model. The Honeywell HHT-011 is a small, compact air purifier under $100 at a cost of about $47. It is only rated for room sizes up to 85 square feet and passes air through a washable pre-filter then a HEPA-type filter which captures 95% of harmful microscopic particles. Again we only recommend this model for people with a very tight budget, a small room, and who do not have any serious breathing problems, but would still like some air cleaning.