Since air is a necessary resource for every human being, clean air is a great way to keep a body healthy and happy. Although all of the air that a person is exposed to may not be able to be cleaned, the air inside a home or building can be regulated to ensure it is of top quality with air filters. Contaminated indoor air can contain many toxins such as dust, dirt and pollen. These contaminants can easily go undetected in indoor air but can cause symptoms in people such as the outbreak of an allergic or asthmatic reaction. Even many people who dont feel that they suffer from a respiratory condition can feel the affects or symptoms from contaminated air such as sneezing, coughing or an irritated throat. Since chemicals, gases, odors and contaminants can easily become airborne and cause these symptoms, air filters are a great way to eliminate these toxins from the air before they can cause any harm. Indoor air is re-circulated throughout a home or building with the HVAC system. If this air is contaminated with bacteria or other toxins, these contaminants have no way to escape because the home or building is generally sealed off with windows and doors. If an air filter is used to remove these particles, however, the cycle and circulation of these impurities is stopped dead in its tracks. Since only clean and toxin-free air is released from the air filters, this is the only type of air that is now in the home or building. There are many places that need the efficiency of air filters in order to keep their employees or other people present safe and healthy. In some manufacturing plants or other production companies, chemicals are used in the process of producing a product or good. The constant exposure to these chemicals can cause instant symptoms such as sneezing or coughing and can sometimes lead to long term side effects such as respiratory problems. In order to keep their employees and workers healthy, many of these employers have turned to air filters to remove these dangerous chemicals from the air. The air released from the air filters is cleaned of these chemicals or gaseous materials and is completely safe for the workers to breathe in. Many offices and homeowners with children are also finding how important clean air can be to their health. With air filters removing and destroying many of the airborne bacteria and viruses that may circulate throughout an office building or a home, sickness and illness such as flues or colds are less present. Many office owners have found their employees no longer spread viruses from one person to another. Homeowners have also found that with the help of air filters, their children no longer pass colds and sicknesses to one another, causing the whole household to eventually catch the bug. With the use of air filters to remove these hazardous chemicals, bacteria, viruses, dust, dirt and pollen, the air that is left to breathe in is clean and free of particles. Clean air brings on good health and less sickness, which is worthwhile for homeowners, employers and office owners alike.