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If you or someone in your family suffers from allergies, you should bring an air purifier mechanical or electronic means to remove particles from the air. The HEPA and ULPA collect and dispose of all these particles. The electronic purifiers will be limited to remove these particles due to their negative ionizer. It's up to you to collect them or not when cleaning, vacuuming or dust made. If you want to get rid of particles of chemicals, smoke or gas, you'll need an air filter carbon as other types of filter does not address these pollutants.

However, a carbon air filter will not remove odors from chemicals, so that ozone generators can eliminate most odors. If a smoker in your family, or if your dog or cat does not smell the rose, consider instead buying a purifier with ozone generator built. However, if your goal is only to eliminate the odor, you probably do need an ozone generator. Remember though, that ozone gives off its own smell, so be sure to limit the amount of ozone emitted. If you want to kill viruses, germs, bacteria and fungi in your environment, a UV lamp is probably the most effective. Although it can not destroy all microorganisms, it will limit the amount present in the air. Some mechanical filters have a UV lamp which traps microorganisms and prevent them from reproducing. It's a brilliant idea.

The best may be to buy an air purifier that combines several powerful of these elements. I guess you can doubt that it will not be given ...

Vacuums mechanical

The mechanical air purifiers are equipped with fans that draw air into a series of filters.

HEPA:

The HEPA filter High Efficiency Particulate Air was created by the government during the Second World War to reduce the amount of radioactive dust present in nuclear power plants. The HEPA filter removes 99.97% of airborne particles with a diameter of 0.3 microns. The HEPA filter consists of a continuous sheet of a special glass fiber folded "V" with aluminum separators between the folds. These filters remove allergens such as dust mites, pollen and mold spores.

HEPA filters do not trap particles smaller than 0.3 microns and do not kill viruses and germs. However, they eliminate much of the bacteria in the air. These particles are trapped and can not return to the air. This shot is so effective that some micro-organisms eventually grow and reproduce in the filter. Another disadvantage of these filters is that they can not remove particles too far away. In addition, they have no effect on the chemical vapors, gases, cigarette and other odors.

ULPA filter:

ULPA filters and Ultra Low Penetrating Air, were originally designed for use in hospitals. They are now also available for home use. They have a glass microfiber media that can hold 99.99% of particles of 0.1 microns. Although the filter can remove particles smaller than HEPA, he shared the inconvenience that all other filters.

Air filter carbon

These filters have pores of molecular size very absorbent. These pores form a strong fabric which stick liquids and odorous gases. This filter is the most absorbent on the market: it traps the gas, cigarette smoke, odors and chemical vapors. Once the particles in the air filter carbon, they can not return to the air. This filter has the same disadvantages as the other filters mentioned above. On the other hand, it does not remove particles such as dust, micro-organisms and other allergens.

Electronic Air Purifiers

The electronic air cleaners use an electrical charge to trap particles suspended in air.

• Purifier Electrostatic it positively charged particles trapped by the camera. These particles are then attracted to the aluminum collector located in the device. Only particles that pass through the electrostatic air purifier is removed. It is therefore difficult to purify an entire room.

• Electret Air Purifier: a special filter, called electret, is charged with electricity so that the particles entering the device cling to the filter. The disadvantages of this device are the same as those mentioned for the electrostatic purifier.

• Purifier negative ionization: This type of cleaner emits negative ions into the room in different ways (one way is the electricity that flows through steel needles. This system is called stitches). Thus, the negative ionization purifier can be effective in larger spaces than purifiers that only draw air into them. The negatively charged ions change the polarity of the particles in suspension so that they bind one another. When they become too heavy, they fall down.
• This type of purifier does not catch the particles, it is simply so that you can not smell them. You can pick up particles, either by vacuuming or by dust. A drawback of these cleaners is that they can smear their surroundings because of the negative ions.

Other types of air purifier

Germicidal UV lamp that is capable of killing germs, viruses, bacteria, fungi (mold) that pass through the bulb. This lamp has no effect on cons by particles suspended in air.

Ozone Generator: Ozone can destroy some bacteria and some chemicals, including those that give off an odor. It gets rid of many odors, including that of cigarette smoke. These generators are not acting on particles suspended in the air and can release their own smell, that of ozone. A high concentration of ozone in the air can irritate the eyes, nose or throat. It is therefore better to turn off this cleaner from time to time.