Tag - home air cleaner

Home Air Purifier is good to reduce indoor air pollution-Olansi China factory

Home Air Purifier is good to reduce indoor air pollution-Olansi China factory

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Incomplete statistics, China’s annual renovation of about ninety million new housing units, of which more than 60% of formaldehyde pollution exists in varying degrees, and consumers are most worried about home improvement, are indoor air quality problems

How do we know their indoor air? Now specializing in indoor air testing institutions, but with the national certification qualification is relatively small, many companies are linked to other enterprises. Suggest that consumers remain skeptical about the actual test results, due to the detection of the credibility of the data may be greatly reduced.

How do we know their indoor air? Now specializing in indoor air testing institutions, but with the national certification qualification is relatively small, many companies are linked to other enterprises. Suggest that consumers remain skeptical about the actual test results, due to the detection of the credibility of the data may be greatly reduced.

If you can not rely solely on testing company, how to determine the air quality? Air purification expert Egisen said, for the decoration of the new house, indoor PM2.5, formaldehyde and other harmful substances will always exist, even if the ventilation window, can not guarantee complete removal, because it comes from cement, paint, wood furniture the floor tiles and other harmful substances will continue to evaporate, especially in the summer, but also because of the influence of high temperature to speed up the volatilization. Worse, these harmful substances to the latency of a dozen years. So, even if there is no testing company, consumers should also be prepared to reduce indoor air pollution measures initiative.

Method for reducing indoor air pollution

green plants

Chlorophytum, aloe, Sansevieria can absorb the amount of indoor pollutants such as formaldehyde, improve indoor air pollution; jasmine, cloves, honeysuckle, sterilization of morning glory flowers secretion of the hormone can kill some bacteria in the air, suppression of tuberculosis, dysentery and typhoid bacteria pathogens growth, indoor air clean. But the plant itself the adsorption effect is very weak and is usually used as an auxiliary way.

activated carbon

Activated carbon to indoor harmful gases to the adsorption effect, it is the use of charcoal, charcoal, various shell and high-quality coal as raw material, through physical and chemical methods for raw material crushing, sieving, catalyst activation, rinsing, drying and screening of a series of manufacturing processes.

ventilate

If the outdoor air conditions are good, you can open the window ventilation, especially in the use of chemical products, cooking, should be ventilated to ensure air circulation

air purifier

In the daily work of the rest, such as office, living room and bedroom can obviously feel the use of air purifiers, indoor air quality has been improved. Aitchison air purifier is the first LED numerical display, can display the accurate numerical PM2.5 in the air, users can be very intuitive to see the change of indoor air quality. Suggestions for the attention of consumers use space the size of buy air purifiers. The general area of 50-70 square meters, should choose the Cadr value in the air purifier 350-550m /h fand area of 30-55 square meters;, should choose the Cadr value in the range of /h 230-360m fand.

Negative oxygen ion air purifier is what? What is the advantage to human body?

Negative oxygen ion air purifier is what? What is the advantage to human body?

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Negative ion air purifier is a negative ion by itself for air purification, dust, odor, sterilization appliance environment optimization, its core function is to generate negative ions, negative ions by dust itself has the characteristics of dust, sterilization detoxification to optimize the indoor air and the difference. Traditional air purifiers are in negative ion as the effect factor, take the initiative to capture the harmful substances in the air, and the air purifier is the traditional exhaust fan, to purify the air by filter dust, known as passive type adsorption filtration purification principle, need to replace the filter regularly, and the negative oxygen ion air purifier is not required supplies.

The use of negative oxygen ion purifier can restore the atmospheric pollutants, nitrogen oxides, active oxygen produced cigarettes (oxygen radicals), reduce the damage of active oxygen on the human body; and a positively charged air dust without charge after deposition, thereby purifying air.

So, now more and more families choose to use to purify the air of negative oxygen ion air purifier. Of course, in addition to air purification function, negative oxygen ion negative oxygen ion release can also be in good health, the negative oxygen ions can not only contribute to the body of vitamin synthesis and storage, strengthen and activate the physiological activities of the human body, so it called “air vitamin”.

Air anion and sedative, hypnotic effect. If every day we inhale the anion, the amount of health to persevere, be of great advantage: make people energetic, eliminate fatigue and burnout, improve work efficiency. To improve sleep and eliminate neurasthenia. Reduce the incidence of disease, prevention of colds and respiratory diseases. The improvement of heart cerebrovascular disease. The symptoms.

Of course, the benefits of negative ions are able to release the premise ion size ecological level of negative oxygen in small negative oxygen ion machine. Now the market competition scale of negative oxygen ion health instrument can clearly released the diameter of the ecological level of negative oxygen ion concentration and small, high concentration can reach more than 30 million /cm? 3; truly, small particle size, high concentration ozone content. For the vast number of consumers concerned about the 5cm, the ozone content of negative oxygen ions balance game health apparatus caused by less than 0.03mg/m? 3, far lower than the national standard limit; 0.16mg/m 3; and can be completely assured.

For more info about negative ion air purifier,please visit olansi website http://www.olansi.net

China air purifier manufacturer directory 2

China air purifier manufacturer directory 2

1. Guangzhou Chuanghuan Ozone Electric Appliance Co., Ltd.

Room 210A, No. 18 Yard, Mubei West Street, Tianhe District, Guangzhou, Guangdong, China (Mainland)

2. Ningbo A-One Hardware Co., Limitd.

No. 57-4, Zhongnichang, Xinmian Village, Xiaogang Street, Beilun District, Ningbo, Zhejiang, China (Mainland)

3. Shanghai Booguan Technology Co., Ltd.

No. 378, Zhongcun Road, Nigang Village, Anting Town, Jiading Area

4.Dongguan Ramcent Electrical Appliance Co.LTD.

No. 1-2, Cunmei, Liuwu, Shijie Town, Dongguan, Guangdong, China (Mainlan)

Tel:864000522533

5.Aquapure (Shenzhen) Ozone Technology Co., Ltd.

Room 1102, University-Town Business Park, Lishan Road, Taoyuan St., Nanshan, Shenzhen, Guangdong, China (Mainland)

Tel:8613715076653

6.Shenzhen Blueocean Industry Co., Ltd.

Room 3H061, No.5 Exchange Square, Southern China city, Pinghu, Longgang District

7. Shenzhen Dituo Electronic Co., Ltd.

3/F, Building 8, Haosi Western Industrial Zone, Shajing St., Baoan Dist., Shenzhen, Guangdong, China (Mainland)

8.Guangzhou Chi Yang Electric Machinery Co., Ltd.

2/F, Building C2, Gaosha Industrial Estate, Zhongcun Avenue, Panyu Area, Guangzhou, Guangdong, China (Mainland)

Tel:02022862870

8.Guangzhou PSKY Electrical Co., Ltd.

Room 307, Zone E, Self-Compiled No. 8, Zhifu Rd., 106 National Road, Jiahe, Baiyun Dist., Guangzhou, Guangdong, China (Mainland)

9.Taizhou Jimyue Electronics Co., Ltd.

No. 79, Weiwu Road, Economic Development Area, Taizhou, Zhejiang, China (Mainland)

10.Guangzhou Grasse Environmental Technology Co., Ltd.

401, No. 116, Guangcong 4th Road, Zhongluotan Town, Baiyun Dist., Guangzhou, Guangdong, China (Mainland)

Tel:008602029016112

11.Laiyang Zixilai Environmental Protection Technology Co., Ltd.

No. A5, Heshan Road, Economical And Technical Development Zone, Laiyang, Shandong, China (Mainland)

12.Foshan Sennice Aromatic Factory

No. 12, Hengsan Road, Desheng Industrial Zone, Lishui Town, Nanhai District, Foshan, Guangdong, China (Mainland)

Tel:8613928688969

13.Shenzhen Annfly Technology Co., Ltd.

901, Bldg. 30, Zone 3, Zhangken, Minzhi St., Longhua New Area, Shenzhen, Guangdong, China (Mainland)

14.Hangzhou Puliheng Electronic Technology Co., Ltd.

(Crossing Of Xinxia Rd. And Jinshan Rd.) Industrial Park, Yiqiao Town, Xiaoshan District, Hangzhou, Zhejiang, China (Mainland)

15.Guangzhou Netech Environmental Technology Co., Ltd

Room 108, No. 18, Mubei West Street, Tianhe, Guangzhou, Guangdong, China (Mainland)

16.Guangzhou Ozone Environmental Technology Co., Ltd

3/F, Xingrui Building, No. 2, Dongheng 5th Road, Zhu Village, Tianhe District, Guangzhou, Guangdong, China (Mainland)

Tel:862022035572

17.Zhejiang Wowtech M&E Products Co., Ltd

Rm. 1104, Aokesi Mansion, Rili Middle Road, Ningbo, Zhejiang, China (Mainland)

18.Suzhou Hanbang Sterilizer Equipment Co., Ltd

No. 499, Jinsheng Road, Jinjiaba, Lili Town, Wujiang Area, Suzhou, Jiangsu, China (Mainland)

19.Shanghai Yim Machinery Equipment Co., Ltd.

Room 931, No. 15, Lane 201, Jinxiang Road, Pudong New Area, Shanghai, China (Mainland)

20.Shenzhen Ohmeka Technology Co., Ltd.

Rm. 1203, Bldg. B, Bulong City, Bulong Rd., Buji Street, Longgang District, Shenzhen, Guangdong, China (Mainland)

Tel:86075584552230

 

People snapped up air cleaning products because of the bad weather

 

Concern that the thick smog lingering over North China may pose serious health threats has boosted sales of air cleaning products across the nation.

Demand for humidifiers, air purifiers, masks and related items has skyrocketed since November, and merchants are expecting it to keep growing this month.

“The growth demonstrably outpaced that of other home appliances, and the rise is largely attributable to the recent air pollution,” Zhao said.

Though the gloomy weather is spread over northern China, especially Beijing, “We see in general an equal surge in demand in different parts of the country, and we believe the numbers will continue to rise until the end of the year,” she said.

Chang Zhonghua, a lab examiner at a pharmaceutical factory in Shenyang, capital of Liaoning province, said she had to wear a mask every day because of the poor air quality.

“I also spread bamboo charcoal bags around my home and in my car to purify the air. I don’t know whether this actually helps, or is simply a psychological comfort,” she said.

 

On Taobao.com, Alibaba.com,the country’s biggest online marketplace by registered users, air cleaning products such as air purifiers and humidifiers are the hottest search items on its homepage, said Qiao Peilei, a spokeswoman with Alibaba Group Holdings, the parent company of Taobao and Alibaba.com.

In the past 30 days, HYG Appliances, a Shenzhen-based electronics retailer, sold 5,541of one type of humidifier through its e-commerce channel on Tmall.com, the business-to-customer arm of Alibaba.

An HYG salesman said that’s three times the number sold last month and a 20 percent year-on-year increase. He added that 60 percent of the orders were delivered to Beijing and neighboring Hebei province.

“People snapped up air cleaning products because of the bad weather, and sales in one outlet in Beijing even doubled compared with this period last year,” Suning said in an e-mail.

Similarly, Gome Electrical Appliances, a major rival of Suning, saw air purifier and humidifier sales grow by 30 percent, said He Yangqing, Gome’s public relations director.

Tan Mingqi, a physician and chief of the respiratory department at Shengjing Hospital of China Medical University in Shenyang, said common masks and air purifiers help prevent users from inhaling dust. But it’s equally important to clean them, he said.

China uses a standard of particulate matter smaller than 10 micrometers (PM10) to measure air quality, but the public has urged authorities to adopt the stricter PM2.5 standard, which measures finer matter that is considered more hazardous to health because it can go deeper into the lungs.

People of the Han Dynasty invented the “air purifier” so long, you have seen?

In winter, the haze is becoming increasingly serious, direct harm to our health. But now developed technology, although the haze problem has not been radical, but we can use anti haze masks outdoors, indoors can purify the air using air purifiers, improve air quality to ensure good health.

Then the problem has come, because the ring (air) (gas) (gas) asked (net) problem (chemical) is not only a problem and demand, so the ancient people in the face of air pollution is how to do it?

As early as 2000 years ago during the Han Dynasty, the wisdom of the Chinese has started the production and use of “air purifier“. So, today we will try to understand the people of the Han Dynasty invented the “air purifiers” look like what, what is the working principle.

Lighting is widely used in the Han Dynasty of the animal fat as fuel, not full combustion of carbon particles and combustion ashes with the hot air flow becomes volatile, leading to indoor smoke. In order not to be choked to death, Han people began to study how to purify the indoor air. Thus, people of the Han Dynasty invented long letter lanterns. Wild fish lamp and lamp set lighting, copper cattle! Invented the three lighting tool is the people of the Han Dynasty the air purification, the aesthetic value of the function of “air purifier”

(gilded bronze figurine with a lamp)

 

(Wild fish lamp )

 

 

 

                                                                                        (Bull lamp )

 

Of course, around the long letter lanterns, lamp and other lamps Yan copper cattle may vary, but generally in the above three, but the work principle of all the same.

 

 

(Schematic diagram of each part of wild fish lamp)

 

 

Long letter lanterns, lamp and lamp adopts the bull goose “water filter smoke” way to purify the air. It is a long letter palace lantern, or wild fish lamp and copper cattle light, all contain at least “lamp, lampshade, lamp holder, flue flue (long letter lanterns in the palace is the right arm, a smoke channel of wild fish lamp as the flue pipe gooseneck, it is between the first cattle and light box), 5 tank”, other three kinds of lamps are constructed with reasonable design, many components can be disassembled, and the lamp shade can be arbitrary direction of rotation, to adjust the brightness and the illumination angle. When the lights lit. Through the smoke flue into the palace, wild goose fish and bull’s body, by water filtration, containing dissolved, so as to keep indoor air fresh, preventing pollution of oil fume on indoor air.

Although the gap between the three “air purifier ” and now really great, but in the Han Dynasty have practical exquisite invention of such a set of environmental protection and the Arts in a is rare, simply called black technology, have to admire the wisdom of the ancients!

 

 

Ensure safe Diwali for your pets: 7 tips to take care of pets this Diwali 2016—-Tip 6 use air purifier

Diwali is almost here, and we are sure you must be gearing up for the festival of lights. But if you are proud parents of adorable fur balls, you need to take extra precaution this time during Diwali. Though Diwali might be a perfect time for you to bond with families and friends, but your pet might have a difficult time coping with the festive season. So if you love your four-legged friends, you need to take some precautions to not stress out your pets.

During this festive season the air pollution and noise pollution shoots up leaving us all flustered thanks to the loud crackers and fire works. So given the fact that dogs have extremely sensitive ears and noses, they are subjected to much more stress  during Diwali. The pets gets stressed and confused during Diwali because of the loud festive celebrations, so it is important to keep your dog calm at home. You need to make sure of a couple of things to make sure that they are stress free. You need to keep in mind the following tips to make sure that your pet is at ease during the Diwali festivities

1.Fire crackers

The loud fire crackers and fire works are bound to stress out your dog, so make sure that you accompany your dog all the time in a quite room. It is important to keep your dog calm and stress free, so use something to cover your pet’s ears. After consulting the vet, you can also give your pet an anti-anxiety pill.

2. Keep them company

So it’s all festive and fun, but make sure that your pets are not left behind alonme at home. If will notice that your pets will become even more stressed if they are wound up on their own o on Diwali with all the loud celebrations happening outside.

3. Don’t leave your doors ajar

Sine you know that your pet is very sensitive , you have to take some precautionary measures. Don’t leave the door ajar, also try to close the windows to protect your furry friend from the loud noise. You can also play soft music to soothe your pet and make them feel safe.

4. Party with your pet

With the Diwali parties and gatherings, you will have guests flowing in and out of your home. So while making your guests feel at home, do not ignore your pets. Never lock them up in another room or put them on a leash. If you do so, your pets will become insecure. Make your pets a part of your gathering and you will realise that they will be less stressed.

5. Say no to toxic colours

Keep your pets away from the Rangoli colours. Looking at something they have never seen before, they might get excited and roll in the pretty colours, but the toxic colours can be dangerous for them. If they consume if or simply come in contact with the Rangoli colour,s they might get food poisoning or skin infection.

6. Use air purifier

Since Diwali leads to a lot of air pollution, it could be bad for your pets. If you care about your four-legged friend, you need to invest in a good air purifier to eliminate indoor air pollutants. Not only will this help you to keep  your dogs healthy on Diwali but all year long.

7. No lip smacking sweets

With Diwali, you will have a whole lot of lip smacking food preparation and sweets, but avoid feeding it to your pet. All the Diwali special rich and fried food can upset the tummy of your pets. So stick to the dog food or whatever your pet usually eats to keep your pet away from all the hassle.

Air Purifier Bike

Air Purifier Bike 空气净化器自行车

Recently, a website published 2013 annual consumption China keywords. Among them, the “haze” on the list. The data show that the national Amoy friends against the haze of a spent 870 million yuan. Masks, air purifiers, indoor treadmills and other goods were bought 4 million 500 thousand times. The haze from the north to the south of the way that the diffusion. One weekend I call Shenzhen buddy ride together, he was relentlessly rejected — recently is haze, I got respiratory uncomfortable, you don’t go out for it.

This is ironic, sports has become unhealthy things. In my anguish, this Air-Purifier bike comforting my heart. The front is equipped with an electric air purifier, air purifier riding, by inhalation, the pollutants (including dust particles) can be filtered. Out, is the filtered clean air. If you think this is all that is completely mistaken, Air-Purifier bike has a “photosynthesis bike” alias, tripod body through the photoelectric effect to convert sunlight to electricity, start the operation of the fuel cell body, thereby generating oxygen even. When not in use, it is also capable of air purifier and oxygen production machine.

However, want to see Air-Purifier bike and Mami difficult, because it is still in the conceptual stage.Air purifier bike creative director also admitted it, there are still a lot of unknowns, they have only one kind of model, but they will make a prototype to prove the feasibility of this idea. With it German red dot design award, who can say that dreams come true one day be far behind?

Air Purifier Bike 空气净化器自行车

Home Air Purifier: How do Air Purifiers Work?

An air purifier is a product that cleans and rids the air of contaminants. Some claim removal of up to 99.9% of particles in the air of a home or business. They are commonly marketed for being beneficial to sufferers of asthma and allergies. Being able to reduce and even eliminate second-hand smoke is another attractive feature for many users.

Commercial grade purifiers are made as either small units that stand alone or larger units that are able to be attached to an AHU (air handler unit) or an HVAC unit that can be found in industrial, medical and commercial industries.

Home air purifiers can be used for an entire home or an individual room. Air purifiers are made in many different sizes and types with the most common being the HEPA filter. Most users of air purifiers purchase them to improve the air quality within their home or business.

Types of air purifiers

  1. HEPA Filters. The HEPA filter uses a cloth filter that is able to trap 99.9% of particles that are .3 microns or larger and a fan to circulate air throughout the machine. HEPA filters are effective in retrieving nearly any harmful particle that is found in the air. The replaceable filter can last many years depending on the air quality of the room the filter is in. A HEPA filter is a very effective unit but is one that uses a lot of energy
  2. Ozone purifiers. Ozone is a reactive oxidant that can destroy some chemicals and bacteria. When it reacts with some substances in the air, those substances are broken down into materials that are pollutants. An Ozone purifier fights those pollutants. It is also very effective in fighting odors but does not work against allergens or most chemicals.
  3. Carbon air purifiers. This type of air purifier is very effective in capturing particular particles, including gas, smoke, and odor. It is also the most absorbent filter sold on the market. A carbon air filter contains small pores that are very absorbent and chemically react to particles as they pass through and the odors and particles attach to the carbon. This particular air purifier does not work against allergens or micro-organisms.
  4. Ionic air purifiers. This type of purifier works by ‘ionizing’ air, causing particles to gain either a positive or negative charge. The ionic air purifier has a collection of plates that contain an opposite charge from the air particles; therefore, the particles are attracted to the plates. The charged particles will attract other particles with the opposite charge to them. An ionic air purifier is able to remove very fine particles in the air, even from several feet away, but it does not work on odors or kill germs.
  5. Ultraviolet light air purifiers. The Ultraviolet light air purifier sterilizes micro-organisms as they pass through, including viruses, germs, bacteria and mold. After they are treated with the ultraviolet light, the micro-organisms are no longer able to reproduce and grow. Ultraviolet light air purifiers do not work against smoke, odors, allergens or chemicals.

Choosing the right type of air purifier can be challenging, but by understanding their main differences, an educated choice can be made based on someone’s specific needs.

The following are features to consider when purchasing the proper unit:

  1. Performance. Look for a unit that removes a high amount of particles from the air, including smaller-sized pieces.
  2. Air volume capacity. Choose a unit that is recommend for your size room. This is usually expressed as square feet.
  3. Particular health concerns. Consider what substances you want to be removed from the air: smoke, germs, bacteria, etc.
  4. Manufacturer. Choose a purifier that has a reputable manufacturer. The Association of Home Appliance Manufacturers is a great source.
  5. Indoor factors. If there is a particular pollutant affecting your health, look for a unit that works best at eliminating it.
  6. Cost of operating. Replacement filters do cost so make sure to look at the replacement interval and the cost of filters.
  7. Quality of construction. Make sure the warranty covers the internal parts of the unit.
  8. Ease of use. Make sure the unit is easy to operate, clean and change the filter
  9. Noise while operating. Is the unit considered ‘whisper quiet’? You can request its operating noise values before you make a purchase. Quieter units are around 35 decibels.
  10. Warranty. Look for a long-term and comprehensive warranty

For an existing home and central air system, the easiest and most affordable method is an air purifier that is designed for only one room and used in that targeted room. A room air purifier works more efficiently and is more cost effective when a purifier is needed for only one room. An effective unit for a room can cost less than $300 and provides good results.

As an alternative, a whole house purifier can be purchased, but may cost thousands of dollars, depending on the installation and electrical needs of the unit.

Commercial air purifiers work by removing harmful contaminants that are circulating in the air. They are used worldwide to improve hygienic environments, remove odors, gases, smoke and other types of indoor air pollution. Commercial air purifiers are used today in schools, offices, hospitals, bars, restaurants, food plants, factories and farms.

Whole-House Air Purifiers: Efficiency Report

Manufacturers say their newest designs of whole-house air purifiers reduce the amount of ozone that’s in the home through the use of carbon filters, which appears plausible. However, you still should be wary about claims of overall effectiveness.

OLS-K06A

The push for healthier indoor-air quality by Environmental Protection Agency and the green-building movement has fueled the market for whole-house air purifiers in today’s homes. According to market-research group Freedonia, sales of portable and whole-house air purifiers are expected to rise by 4.8 percent annually to $1.7 billion in 2014.

As concerns about the effects of poor indoor-air quality have increased, manufacturers have marketed whole-house air purifiers as capable of doing more than ever before—including helping consumers who suffer from chronic respiratory illnesses, such as allergies and asthma. Although studies indicate that some claims might have merit, other claims are misleading.

In 2009, Food and Drug Administration issued cease-and-desist orders to 10 manufacturers that claimed that their whole-house air purifiers could remove the H1N1 flu virus. FDA’s approval of air purifiers extends only to models that are considered commercial-grade and are approved as a medical device in hospitals and laboratories. Such models may make this virus-killing claim, says Sarah Clark-Lynn of FDA. As of press time, no portable or whole-house air purifier that’s marketed to the consumer can treat, prevent or remove the H1N1 virus, Clark-Lynn says.

CARBON CONCLUSION. When it comes to whole-house air purifiers, the biggest change in the past 3 years is the increase in the number of units that include carbon filtration to address ozone.

The emission of ozone is a particular problem with whole-house electronic air cleaners, which apply an electric charge to trap irritants on plates of filterlike grids. (The other type of whole-house air purifier—media filter cabinets—moves air through a filter that must be replaced every so often.)

Seven manufacturers now have models of both types of whole-house air purifiers that have carbon prefilters and final filters. The use of carbon filters not only removes odors that are left behind from cooking and tobacco smoke, but it also captures ozone (and volatile organic compounds, or VOCs), manufacturers say.

The ozone that’s captured isn’t just the ozone that’s produced by electrically charged rods that are in whole-house air purifiers. The latest whole-house air purifier from Lennox, which is called PureAir and was released in 2012, helps to eliminate the ozone that occurs naturally in highly populated areas and collects in a home, says Kevin Lyons of Lennox. It reduces the ozone that’s produced by electrical motors, cleaning chemicals, home furnishings and automobile emissions in the garage. Lennox says the carbon filters that are in the PureAir reduce ground-level ozone that forms inside of a home by 50 percent. Other manufacturers make similar claims but without a specific reduction figure.

Models that have carbon filters start at $239, compared with $130 for similar models that have a only standard mesh filter. Based on our conversations with manufacturers, we believe that increasingly more models will include carbon filters in the next 3 years.

No test data confirm the effectiveness of ozone removal by a whole-house air purifier, but Brett Dillon, who owns IBS Advisors, which is an energy-efficiency consulting company, tells us that whole-house air purifiers that are fitted with carbon filters can be effective at clearing ozone and VOCs. However, he points out that the efficiency of carbon filters decreases over time. Also, depending on the type of filter that’s used, areas that have high humidity also might decrease the effectiveness of carbon filters.

Three experts tell Consumers Digest that a big part of a whole-house air purifier’s effectiveness is how well that it’s maintained. The introduction of carbon filters made us wonder whether this type of filter shortened the recommended interval in which you should replace the filter. Happily, that doesn’t appear to be the case. Manufacturers say carbon filters should be changed every 3 months—the same as standard filters. Unfortunately, you should get ready to reach for your wallet anyway. The cost of a replacement carbon filter ranges from $35 to $60. A standard filter costs about $60 for a year’s supply, or $15 every 3 months.