PuriAir

Air purifiers are a great way to keep the home cool in the height of summer with most people taking this option rather than the traditional air conditioning system. They have been designed to help the environment and are a cleaner way to keep cool than using the refrigeration system of an air conditioner. Every thing around us that we breathe in is just so dirty and respirator illnesses are so common place in world we live in today. That is why the air purifier is so great because you can keep the air in your home fresh and clean. The alpine air purification system is one of the products in the market place and is one of the best you can buy. The alpine is one of the most popular purifier and by...

Do you know that your electronic air filter will create the electric field to engulf all the particles and allergens in order to give you the cleanest of air. These are installed in the central filtration system of your home and even on the portable units that you are using. Electrostatic or electronic air filters are capable of removing the particulates of even less than 1 micron in size. The air that circulates in your home through the cooling system contains number of dust particles and numerous allergens. Whenever you switch it on, the electronic air filters especially the electrostatic precipitators uses the technology of electrostatic attraction to trap the particles. The air enters into the...

If you are a sufferer of asthma or any serious allergies, at some point you must have considered or been approached by a salesman to buy an air purifier. These gadgets are meant to alleviate the problems of air pollution faced by asthma patients. People who suffer from asthma know only too well the advantages of maintaining a clean and healthy air environment. The cleaner the air that they breathe the lesser the chances of an asthma attack. What sets off an asthma attack? Asthma can be triggered by a number of common elements found in the air. These include but are not limited to high levels of dust floating in the air, the ever present smog in cities caused by traffic congestion, noxious byproducts...

How much time do you spend in your car? If you are like millions of Americans, you can spend many hours in your car - from the commute to and from work, to drop off and pick up the kids from school, to just running weekly errands. If you are sensitive to strong smells, such as smoke, smog, or car emissions, then just driving around in your car can be an uncomfortable experience. What is the solution? You need an air purifier for your car! What are car air purifiers? Car air purifiers are personal devices that are suitable to operate in your automobile. Unlike home air purifiers, these appliances typically plug directly into your car's power outlet. These air cleaners are designed to work efficiently...

Ionic Pro Air Purifier could be utilized within any home to make it a healthier location to stay in. The main reason for it'd be to eliminate unsafe toxins in the air, leaving it purified and fresh. This quiet machine blocks the toxins w/in the air and makes it to fresh air. It's nearly quite because it uses no fans or motor. It is power efficient as well because it utilizes the same amount of energy. With one touch of switch, the Air Purifier is ready-to-use. You'll not need to change the filters since the Ionic Air Purifier does not use one. Instead, the pet dander or allergens are blocked to the blade which could be washed out with a cloth. Whenever it begins to make an irritating noise, it is...

Nowadays, we have become so much used to all the pollution in our environment that we do not even realize that the air we are breathing is not clean for us. We are always surrounded by smoke, dust and other kinds of wind pollution that we do not even feel the fact that the air has lost its freshness. The only time we realize this is when we go to some rural area or a country where there is less pollution, and nature is in abundance. We have lost the feeling of living in fresh air because of the environment of our cities. Since we all are living in cities, we do not really care anymore about the dirt and polluted air. We should at least give a thought to the fact that we are intentionally inhaling...

Air filters can sometimes be very expensive depending on the materials used for filtration. Despite the fact that they can be expensive, they are in most cases for homes, a necessity depending on the location of the house. For a house in the city, a filter can eliminate hazardous particles that may enter the home from nearby factories and restaurants that emit gases through production processes. On farms families use filters to filter out chemicals from the farming process, which includes hazardous particles and fumes relating to manure and fertilization. For these types of families, it usually is not feasible to purchase a state of the filter for their house, however, they need a reliable filter...

There are air filters that battle against indoor allergens such as dust smoke, odor, gas and mould with filtration. The air filter's technology cleans the air in the room with top efficiency and speed. Some are expensive, but are worth the money if you need a high-end air filter. There are some filters available that decontaminate air up to 50% more than compared to other less expensive brands. They offer excellent filtration efficiency and also filter change indicators. Though many claim that they have a long lasting filter life, many do not have increased air delivery or lower noise levels. Some have pre gas filters with excellent filtration -- 3 filters and excellent carbon quality. The finer...

It no secret that indoor air is generally more polluted then the air in the great outdoors. Study after study has proven this to be true and those who suffer from respiratory problems such as asthma bear the brunt of this problem. Fortunately there are answers to this problem that all asthmatics can take advantage of. First let's take a look at why air quality is so important to asthma sufferers. Asthma is a respiratory condition that is characterized by the narrowing of a person's airway (bronchioles and bronchi) that causes difficulty breathing. 3 to 5 percent of all people will suffer from its affects at some point in their life, some more severely than others. Breathlessness and a wheezing cough...

Do you have any wish to purchase an air purifier to clean the air in your house or in the office room? Are you very much interested in buying this wonderful product? If you are really interested to try your luck by installing the air purifiers in your rooms, please check the Oreck lineup. All the products under this brand name are not only competent and durable but also the purifiers of this Oreck brand will add up the glow and radiance to the bed chamber or living room or the inner space of your kitchen room. If you have any intention for the home decoration by installing the fashionable furniture items, you must include the Oreck air filtering which will make the room modern and fashionable...

UV air purifier uses ultra violet light to deactivate and eliminate harmful micro organisms that are present in the home or office environment. These may be bacteria or viruses. They are built using a technology that will perfectly combine with other purification systems so as to achieve the maximum results and benefits. This technology will effectively eliminate mold and tiny toxins. UV air purifiers will act by changing the DNA of the harmful microorganisms so that they will not survive. It should be noted that this technology will not affect the DNA of human beings. they are completely safe for use in the homes and so you should not have any doubts while purchasing them. The UV air purifiers are...

Survey, 2002 to 2004, the Japanese air purifier market, annual sales by as much as 1.8 million units, but in 2005 fell to 157 million units, in 2006, fell to 1.22 million units. However, with Japanese consumers in the home life for the comfort, cleanliness and health have become increasingly demanding, air purifiers and other help to improve indoor air quality, household appliances is becoming a necessity, which air purification products for the whole market. Especially in the high efficiency air purifiers humidifying function entered the market, the air purifier market began to perk up. JEMA data show that sales of air purifiers in 2007 rose again to 180 million units, with high efficiency...

Indoor air quality is a challenge that all of us need to deal with. One of the remedies to shoot this trouble is the usage of home air purifiers. It is an alarming fact that pollutants such as volatile organic compounds, chemicals, gases and airborne particles are greater indoors than they are outside the home. This bad air quality affects people in myriad ways and is dependent on your health and age. Air purifiers are one of the conventional and effective ways to protect you and your family from this problem. This appliance is specifically designed to purify and clean the air that people breathe. It helps in reducing airborne pollutants and odors and also helps in filtering common allergens like...

There is quite a bit of information out there through Internet sites, your local yellow pages phone book, or even from advertisements or word of mouth for the variety of furnace filters available. Once you become a homeowner, or even a renter of a new home, it is imperative that you use a furnace filter that is not only healthy for you and your family, but also cost-effective. Regular maintenance such as overall cleaning and replacing the air filter for your furnace is essential for preventing your furnace or air conditioner from breaking down due to a build-up of dust particles in the fan motor. With a small charge for replacement of your filter, you can potentially avoid the higher cost of a...

I want to discuss the main types of furnace filters. As with many, many other things in life, there are positives and negatives inherent with each type of air filter technology. You must assess what your needs and values are, and apply them to the information out there to make the best decision possible. For example, if you are allergic to pollen, and you live in a high pollen count area, you have a pretty strong value for air filters that can clear the air of allergy-inducing particles. Regular furnace filters These are the most common filters out there. They are easy to find. They are convenient. They are in most Target type stores and Home Depot type stores. They even appear in supermarkets often...

Electrostatic Air Filters -- Cleaner Air and Environmentally Friendly Furnace and air conditioning units require an efficient air filter to clean the circulating airflow. The Air-Care filter is an electrostatic air filter that does just that, plus it never needs replaced and has a lifetime warranty with a 100% money back guarantee. The air filter uses static electricity to clean the air. An electrostatic charge is generated by air movement over the filter's fibers which attract and trap airborne particles, most of which are smaller than one micron. Allergens, irritants, and pollutants such as pollen, dust, bacteria, mold spores, pet dander, and smoke all remained snared until the filter is cleaned...

People who suffer from chronic breathing conditions such as Emphysema and COPD should be careful when buying an air filter system. These conditions are serious life threatening health problems that can be aggravated with the use of inferior poor performance air filters. A good air filter should clearly remove indoor allergens such as smoke, odor, gas, dust and mould through quality filtration. An excellent air filter is that which is well equipped and capable of cleaning the air in the room efficiently, and at record time. There are very expensive air filters, but they are worth their price because they are very efficient for cleaning your indoor air. Some air filters are equipped to decontaminate...

Austin Air Purifiers are manufactured using the best technologies promising a guaranteed performance. They help remove impurities from the surrounding air. They are mostly used by people who have allergies or respiratory problems such as asthma, or those who are sensitive to certain kinds of chemicals. Austin Air Purifiers use carbon Zeolite mix and HEPA to purify the air. They operate by pre filtering trapped air for effective removal of larger dust particles form the air. The pre filtered air is then passed through a HEPA filter that removes any other smaller dust particles that may be left in the air. There are special filters that are used to filter out odors and unpleasant gases from the air...

Friend, what is the bottom line for you in purchasing an air filter for your home? Is it to improve the over all quality of your indoor air? Sure, be that as it may, you require careful consideration in order to find and purchase the proper air filter system suitable for your particular home. An air filter that is just humming noisily only makes its presence felt, but the job might not be done after all. There are several air filter manufacturers on the market, all claiming that their brands are the best or at most does what it claims in both the brochure and manual, but as you must know, all brands don't have the same quality. However, below are the five air filter market leaders and their...

Health is wealth. This holds true especially in today's tough financial times. Those with asthma or other respiratory and cardio diseases will agree that clean air inside the home is beneficial to overall health. Bionaire air purifiers are designed with your health in mind, providing quality air cleaners that are not only effective, but cost-efficient and environmentally friendly as well. The sleek and functional design of purifiers from Bionaire makes it a favorite among families that have a discerning taste for style and overall function. Bionaire air cleaners utilize the highest quality HEPA filters to effectively trap harmful allergens and airborne bacteria inside the home. The health-conscious...

Alpine Industries is one of the best manufacturers of air- purification systems in the world. Alpine Industries brought out with many effective and highly efficient air purifiers. Due to the best performances and good result distributors all over the globe have sold more than three million of air purification devices. Technically the Alpine air purifiers are the best in comparison to other air purifiers. Alpine air purification has ozone generators that circulate room air through a plate, which is electrically charged. The plate helps in converting the oxygen to ozone and again circulated into the room by the help of a fan that present in the unit. This device helps in cleaning home or room very...

ain Human Resource issue these days is not just about attracting the best talents but also to retain them. The organization has to ensure that those employees who walk out of the office at the end of the day’s work are going to return the next morning. And to please your employees you need to provide them a nice environment to work in. it should be healthy and comfortable. One of the most crucial factors of cleanliness is the air we breathe in. it has to be free of particulates, allergens and contaminants. Most of the offices built these days are insulated and there is no contact with the outside air. The primary reason for doing so is to keep the energy usage to a minimum. However, this also...

Where do you find the best air purifiers rankings? That's a particularly important question, since many websites claiming to be independent reviewers are just sales outlets for specific purifiers. And which do you think they rank highest? Themselves, of course! Finding purely unbiased independent air purifiers rankings and reviews is a difficult task. But, I love a challenge. So here goes! Consumer Reports (CR) is probably the best source for independent rankings. Not everybody agrees with their choice of products, but they do an excellent job of testing and, since they don't sell products, their rankings are impartial. All air purifiers ranked by CR are tested in a sealed room with specific amounts...

tion happens constantly in our world and is an accepted reality in today’s modern, industrialized society. There are chemicals and gases abounding in the atmosphere that we do not see, yet we know they exist. Yet, because we do not see them, we often dismiss them as not very important issues in our overall lives, but they do affect our health and well-being in ways that we may have never before imagined. Allergies affect millions of people, and often the causes of these allergies are air-borne, such as dust mites and cat dander. With the invention of the UV air purifier, we can now begin to clean the environments within our homes and offices in order to regain some of our health. The...

This Air Cleaner Purifier is a top end level purifier with many features to keep your indoor air as fresh as possible. This system is intended for any household looking for a purifier with high performance of eliminating particles such as pollen, pet dander, dust, smoke and more down to .3 microns with 99.97% efficiency. It also promises an ultra-quiet experience of less than 18 decibels on the low setting, which is nearly silent. The BioGS air purifier cleaner emits zero ozone and is absolutely safe to use for anyone suffering from allergens or asthma. The main Hepa filtration is an advanced bio-engineered fiber material, which will collect and remove harmful allergens and pollutants. There are no...

tion is one of the inevitable and harmful elements that are our environment possess. We have been striving hard to combat outdoor air pollution; but much to your surprise, experts claim that indoor pollution is two to five times as much as outdoor air pollution. An indoor pollution may be ten times more toxic than the outdoor air pollution as we spend around 90% of our time indoors. Our indoor environment contains many hazardous contaminants like dint and dust mints, pet hair, mold mild dew, household odors, common household and industrial cleaning agents, pollen and other allergies. These elements keep on floating in the air and become the main cause of a person getting affected by a number of...

Although discount air purifiers cost less than other air cleaners, it does not mean that they are less efficient too. An air cleaner with a discounted price may be exactly what you need to improve the air quality in your home and to prevent airborne diseases from penetrating the air you breathe. However, you also need to be very careful before purchasing one of these discounted products because some of them may not be as effective as they seem. Here is a brief buyer's guide that you can use when choosing among discount purifiers. Filtration systems and cleaning capacities The first feature that you must look for in purifiers is their capacity to clean the air circulating in your entire home. Decide...

In addition to the awful smell, cigarette smoke changes otherwise okay air into air that's unhealthy to breath. If that is the case with you or with someone in your household, you are counseled to look at what an air purifier can do for you. These are electronic devices that are used to scrub up the air. They do this by reducing or completely getting rid of the amount of dangerous air particles or pollutants in the air. Mostly, relying online purifier, this is regularly done with the utilization of a filter A filter, can work to avert these air particles from passing through the grid. Essentially, this makes the air returning out of the machine cleaner and fitter. As nice as purifiers are, they don...

So many of us live with someone who smokes or may even smoke themselves. Wherever we go, whether to the department store, grocery store or even our own homes, it is virtually impossible to stop the smell of smoke from attaching itself to either your clothes or furniture, walls, etc. A smoke air purifier is designed for this very purpose. This article will look at ways to rid your home of smoke while investigating possible solutions to cleaner air and living in a healthier environment. With the growing number of smokers these days, especially in our teens, allergies and asthma are much more common and life threatening. Did you know that second hand smoke has up to 40 substances contained in it that...

If you're a health conscious person like myself you're probably already aware of how air purifiers for your home can remove those irritating pollutants none of us need to breathe. Air purifier marketers have done a bang up job educating us about that. However, as they say in the infomercials, "But wait, there's more!" In this case a good deal more. If you really want the cleanest air possible for yourself and your family then choosing the right air purifiers for your home is just one part of a three-prong effort. What you need to do is neither complicated nor time consuming. All you need is a little advance planning and the will to follow through on a few simple steps. The single most important...

If you are an allergy sufferer, then you know how poorly you can feel when your allergies are acting up. Allergy symptoms are unpleasant and many of the allergy medications can leave you feeling drowsy. One method of natural allergy relief is to practice allergen avoidance, which is simply avoiding the things that you are allergic to. It is based on the idea that if you avoid the things that can cause your allergies to act up, you will not have allergy symptoms. There are several ways to practice allergen avoidance, and using a home air purifier is one way to minimize exposure to allergens. A home air purifier can help alleviate some of your allergy symptoms because it filters the allergens from...

If you have allergy, regardless of the pollutants that trigger a reaction, an allergy air purifier will effectively help you manage your allergy indoors. Choosing these 7 features will insure that you have a cleaner that will really make a difference in your indoor air quality and quality of life. 1. Removes Your Triggers This seems like a point that doesn't need to be made, but think about it for a moment. If your allergy is triggered by smoke, and you choose a cleaner (unknowingly) that is not effective with smoke, you have wasted your money. Be sure to check the list of pollutants that the purifier is effective in removing, and make sure that list matches the allergens you want to remove. 2...

It is very common for people to suffer from allergies. Cleaning the air in the home is important to keep allergies down to a minimum. An air cleaner is going to cut down on the amount of allergens in the home. Some of these are going to cost a lot of money and are going to need more filters later. A filterless air purifier may be more expensive up front, but you will no longer have to pay replacement filter costs. A filterless air purifier works by ionizing the air that is pulled into the purifier and removing allergens along with dust that allergens are going to stick to. The particles are trapped into the machine's inner filter. Clean air is expressed. The air that comes out is not going to...

College brings wonderful opportunities for exposure to a variety of people, life experiences and philosophies. Unfortunately, it also brings exposure to an incredible number of airborne pollutants that can adversely affect your student's health, and their ability to have a productive college experience. Living in a dorm situation or sharing an apartment with other coeds can potentially expose your student to many more unknowns. Using an air purifier to remove harmful particulates, odors, and gases is a proactive way to maintain good health. Here are 5 important features that a college room air purifier should have if it is to be effective. 1. Portability-The purifier needs to be light weight and...

It can be hard to rest when allergies are plaguing you. This can be even truer if there is an animal in the home or if you are living in close quarters to your neighbors. When you use a filterless air purifier can help to get rid of the allergens in the air that make it hard for you to get your breath. Technology has made leaps and bounds in the air purifier industry giving people more ways of cleaning their air. The technology was already pretty advanced and many did not understand what these new technologies were going to provide them. Is there any way anyone can know? To know which filterless air purifier is the best, you need only look to the iconic air purifiers. You are going to get full...

Choosing an eco-friendly air purifier means you receive the benefits of air that is constantly filtered of harmful airborne pollutants like dust, dust mites, pet dander, pollen, allowing you to breathe the cleanest possible indoor air in your home or office. Selecting an air purifier that is eco-friendly means that you are doing your part, and the purifier has been designed to do its part by leaving less of a footprint on the environment. Here are 3 important features to look for to insure that the air purifier you select is effective as well as eco-friendly. 1. Choose Biodegradable Filters Check to make sure that the filters are completely biodegradable. Biodegradable filters are usually made of...

Replacing air filters sometimes is a hassle. But it's just a must if you are using an air cleaner that uses HEPA or carbon filters. One way to lessen the hassle would be to get 24 pk air filters. The Advantages of Buying 24 Pk Air Filters A time will come when you'd need to place new air filters on your air cleaners. If you don't have an extra air filter, you have to make a trip to the store to get one. You should get the 24 pk air filters. This will save you trips to the store for the next time you would need a filter replacement. You would also save gas expense if you have a few extra filters ready at home. It would even be better if you buy them when you purchase your air purifier so that all you...

The best air purifiers are those that will fulfill the purpose for which they are intended. They are those that are able achieve the maximum effects. Their maintenance should be low and their energy consumption should also be very low. The best air purifiers are manufactured using the high efficiency particulate arrestor (HEPA). This technology can be 99.97% effective and can capture air particles as small as 0.3 microns. The filters made using this technology can conveniently eliminate pet danders, pollen, viruses, dust and toxic particles. This enables them to release air that is fresh and safe to breath in. These machines are not noisy and do not interfere with the temperature or the humidity of...

There are many different conditions that cause the airways to be blocked; therefore resulting in difficulty breathing. Conditions such as colds, flu, sinuses or allergies. The environment in which we live in, is for the most part, very unclean. An air cleaner purifier, can not only clean the air and make breathing easier, but make the air we breathe more purified and healthier to breathe. This article will not only uncover some of the reasons for the need of an air cleaner purifier, but it will also explore the benefits of using one. The Air We Breathe, Is It Healthy Did you know that most colds and flu are caught right in our own homes? The close quarters of our homes are a prime location for...

Air purifiers can help those who suffer from allergies cope with some of their symptoms. However, those with allergies aren't the only people who can benefit from them. Air purifiers are used in many places to allow people to breathe in cleaner air. You can choose from many types and models of these purifiers. Of course, your choice will be influenced by what you need them for, and the size of your budget. Standing air purifiers are capable of cleaning the air in one or two rooms. You can use these devices on areas where your pet may spend a lot of time, or where there may be smokers present. People with allergies find these are great, but they can also work for those who are just annoyed by certain...

> Clean air is something that many of us feel we breathe in everyday - but what we don’t know is that this air is full of harmful substances. Air purifiers help to clean the air and keep it safe for us all. Some of us believe that the air all around us is comparatively dependable and clean for us to breathe in. As a matter of fact we are perpetually compelling our kids to go outdoors and breathe in the fresh air instead of remaining inside. But did you realise that there are allergens, dust, mold, and pollutants in the air that can hurt us? This is a sad fact that is becoming apparent progressively every day. The allergens within the air is what induces allergies...

When you think of air purifiers, usually think of homes and offices. However a car air purifier can be just as important to keep out a lot of the harmful particles that may come in through your heat and air conditioning systems. This article will look at some interesting aspects of a car air purifier. You may not realize it but your car may already have been air purifying system installed within it. Many of the newer cars these days have filtering systems built right within the ventilation system. I did not realize at the time, but my car had a car air purifier in it until I went in to an oil place to have my oil changed. One of the services that particular company provides is to check over all the...

There are various air purifiers that surface in the markets lately. Choosing between each of them might be a challenge so it is really important that you do know what each one does and weigh the good and the bad of each. With an ozone air purifier, what are the chances that you really are getting your money's worth... much more, your peace of mind? An ozone air purifier works in such a way that it releases ozone into the air. Ozone is an unstable oxygen molecule that, when released, oxidizes anything it gets in contact with. If the ozone is released somewhere near metal, it will then corrode the metal by causing rusts due to oxidation. Ozone has been found to remove extra moisture in the air and...

Our health is greatly affected by the quality of air we breathe. Because of our hectic schedules, we fail to realize the number of impurities being inhaled by us every minute. Contaminations in the air include dust, poisonous gases, chemical fumes, pollen, microorganisms and many more harmful substances. All these can cause severe damage to our health, through allergies, infections and other illnesses. Air purifiers are an effective way of eliminating these impurities from the air we breathe. There are several different types of air purifiers available to serve different purposes. Polluted air is not restricted to the homes, offices and industrial units. The air in our vehicle is also subject to...

Air purifiers are the perfect solution for your air and health needs. It will help you have a clean air and a desirable place to live in. It is useful to eliminate pollutants in your home. These air cleaners are used to remove harmful chemicals found in your home. It can remove up to 99.97 percent of pollutants in the air. It is a great help for individuals who have respiratory problems. This will be useful to prevent serious medical conditions. Benefits of air purifiers 1. Cleans the air. These air cleaners purify the air by removing harmful chemicals such as numerous toxic substances from cigarettes. It also removes unwanted particles in the air that can lead to certain respiratory problems...

It can be hard to find air purifiers that are both of a high quality and a good price, but the Blueair 203 is just this. Not only is is very effective, but it is also quiet. Many air purifiers are unusually noisy, and this can deprive the natural atmosphere that you are trying to create with the purifier in the first place. Thankfully, the Blueair 203 was designed specifically to be quiet and acceptable by all. The technology utilized is a combination of both activated carbon and a HEPA filter. The filter itself is also specially designed to improve the airflow throughout the machine, which not only helps filter more particles out of there air, but is the chief method through which noise is reduced...

Millions of people across the country suffer from all kinds of allergies. Some of the most common allergies are to dust and pollen. These small particles find their way into our indoor air and wreck havoc on those of us unfortunate enough to have to deal with a dust or pollen allergy. One of the fastest ways to bring relief is through the use of an indoor air purifier. There are several brands and types of air purifiers. You can purchase them at most home goods stores as well as online. And there is a model for every budget as well. You will find that these units are suitable for use in any room in your home as well as in your office. Most of us have our allergies flare up in the spring and summer...

As time goes by, it seems as though more and more people are suffering from some type of respiratory problems. This can be anything from a minor inconvenience to a major situation and we are always striving to find effective, easy and inexpensive ways of combating the situation. Fortunately, you can now easily find, on the market, the perfect tool to help you breathe better - the Hamilton Beach air purifier. For some, the mere mention of the words "air purifier" conveys up images of huge, awkward machines that needed to be plugged in at night, only to generate a huge amount of noise as it released fresh air into the room - effectively making you breathe easier, but preventing you from sleeping...

Every part of your daily like has air purification. Every place but your automobile has been purified. A personal air purifier can benefit you in your vehicle as well as the other places you spend time at. When you travel in your vehicle, the air is not always going to be clean. This can be truer when you are in heavy traffic. If you typically use the air conditioner with the choice of having the outside air come in, then you are breathing in all the fumes from the air outside. Unless you live in a heavily polluted area, you expect the air to be clean outside. After all, it is air. This is not the case even in places where pollution is not a problem. Many cars are not current with smog controllers...