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Electrostatic Air Purifiers

Filterless electrostatic air purifiers use the principles of static electricity to purify the atmosphere. These may be the most popular type of purifier on the market. Basically speaking, incoming air is electrically charged by the unit and the dust particles and other contaminants are electrically zapped with the opposite charge. This electrical charging causes the impurities to be trapped in a collection system. Other types of filterless systems include ionics, photocatalytic units, and plasmacluster ionics. An ionics system emits ions into the home that attract dust particles and other microscopic impurities. The particles clump together and either fall to the floor or adhere to the wall or furniture. Though the ionics systems are also very popular, they aren't really clearing out the microscopic impurities in a room. The photocatalytic system actually destroys chemicals and odors by using ultraviolet light and metal semiconductors to produce oxidants. Plasmacluster ionics systems use electrical charges to attract particles to floating water molecules; the particles are then destroyed. As technology advances continue, a system that actually destroys contaminants, instead of just trapping them, may leapfrog over the electrostatic air purifiers in terms of popularity and sales.



A conventional purifying system uses filters. This technology is often referred to as HEPA which stands for High Efficiency Particulate Arresting. Many homeowners have HEPA systems in their homes and face the routine chore and costs of replacing filters. The marketers of filterless purifying systems sometimes use that dislike of maintaining a filtered system in their advertising. Though it's true that a filterless system eliminates the costs of buying replacement filters, it's not true that the filterless system is maintenance-free. Filterless systems such as the electrostatic air purifiers still need to be cleaned. The homeowner will want to pay attention and follow the manufacturer's instructions to keep the unit operating at peak efficiency. If the unit isn't cleaned properly, the collection grid will not be able to trap additional impurities on top of the build-up of dust particles and contaminates. Eventually, these impurities may even be blown back into the space. It's amazing that this could happen with microscopic impurities, but it does. It's one of those miracles of creation. "Behold, God is great, and we know him not, neither can the number of his years be searched out. For he maketh small the drops of water: they pour down rain according to the vapour thereof: Which the clouds do drop and distil upon man abundantly" (Job 36:26-28).



Systems such as the filterless electrostatic air purifiers sometimes release minute amounts of ozone into area being purified. Ozone is one of several trace gases that make up the earth's atmosphere. Other trace gases are carbon dioxide, methane, nitrous oxide, and water vapor. Everyone knows that people need oxygen to survive. Ozone is made up of molecules that consist of three oxygen atoms and plays an important role in protecting all forms of life from the sun's deadly ultraviolet rays. The trace gases are sometimes referred to as greenhouse gases because, like a greenhouse, the gases allow the sun's rays to enter the atmosphere and then trap the sun's heat. If that didn't happen, the earth would be too cold to sustain life. This is why there is concern about the possibilities of holes in the ozone layer above earth's atmosphere. In addition to being a naturally-occurring trace gas, ozone is created when fossil fuels are burned and as output in some purifying systems. According to some research, this created ozone is only dangerous when it's super-concentrated in a small enclosed space. A person who is exposed to too much ozone may get a severe headache. But the amount of ozone that may be released by filterless units such as electrostatic air purifiers isn't enough to create any health issues. The fresh smell after a cleansing rain is actually a concentration of ozone.



For many people, purifiers are a great addition to the comfort of a home. Perhaps someone in the family has an allergy to a beloved pet. Getting rid of the dog or the cat isn't an option, but no one wants the family member to suffer either. A purifier can help rid the atmosphere of pet dander and other allergens. Though this may not be a total cure-all, the purified air may alleviate the worst allergy symptoms. People who smoke in their homes often need systems such as electrostatic air purifiers to keep the acrid odor of cigarette smoke from lingering in the air. However, a system that actually destroys particles instead of trapping them may be more effective at keeping the odor of smoke from settling onto furniture or draperies. Cooking odors and other pollutants also create particles that can be trapped or destroyed by purifying systems.



Systems such as electrostatic air purifiers are usually more expensive than filtered HEPA units. Homeowners may find, however, that a small unit that purifies the atmosphere in a bedroom or a family room is worth the investment. As with all major purchases, consumers are encouraged to do their research and compare different technologies, sizes, and prices before making a final decision. People with allergies, asthma, and other breathing conditions especially will want to purchase the best system that they can afford to provide additional comfort in their homes. The best solution may be to purchase two or more smaller units instead of one large one. By properly researching electrostatic air purifiers and newer technologies, such as the plasmacluster ionics systems, the consumer can be assured of making the best purchasing decision for her family.

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