Air conditioners purify air or air conditioners filter pollution. Air conditioners cannot and do not purify air. The air cleaner located near the return air duct or air handler does filter dust, pollen and other allergens. All air conditioners have a dust filter in the indoor unit.
This traps dust in the air as it circulates, mainly to prevent it from obstructing the inner workings. Indoor air quality is ten times more polluted than outside. Air conditioning is misunderstood as one of the cleaning systems for indoor air pollution. The air conditioner unit with air filters can provide clean air, but not for long.
Air filters in an air conditioner are inefficient at cleaning small allergens from indoor air. These harmful allergens swirl around you and cause life-threatening respiratory diseases. Real air is being filtered, but probably not enough to keep out impurities that cause airway irritation or an asthma attack, as many of the particles are too small for a standard filter to grasp. Your air ducts may also have deposited dust and pollen there, waiting for the air conditioner to send it to circulate in your home.
Ionization filters can remove at least some of the smoke, but generally the claims of these filters focus on removing fine dust, mold spores, odors, allergens and germs. While they can provide filtration as claimed, it is highly unlikely that they have been extensively tested with all brands of air conditioners, and the use of non-genuine parts can reduce the performance of the air conditioner, cause damage and void the warranty. They can trap automotive emissions and flour in the air and remove dust particles by 45 percent for MERV 9 filters and 75 percent for MERV 12 filters. Smart Air is a social enterprise that creates simple and sensible air purifiers and provides free education to protect people's health from the effects of air pollution.
Considering how they are installed, it seems likely that only part of the air will end up passing through the air purifying filter, while the rest flows around it. I've also compared that air to the outside air on very dirty days, and the air that comes out of the air conditioner is nowhere near as dirty as the outside air. The best way to filter very fine particles such as smoke, mold spores, pollen and viruses is with a HEPA (High Efficiency Particulate Air) filter, which is found in many vacuum cleaners and most air purification units, but not in air conditioners. However, there are some types of air conditioning filters that could be useful to help keep indoor air clean.
Contrary to the common belief that dirt helps filters work better, dirt-free filters are what keep the air clean. However, air conditioners, such as LG portable air conditioners, have special self-cleaning functions designed to remove moisture from the coils, thus preventing mold growth. Other effective ways to clean the air in your home include eliminating sources of pollutants, using plants, keeping the room clean, and ventilating your home regularly. A quick online look shows various air purifying filters for aftermarket air conditioners, described as electrostatic, activated carbon, or the like.
Poor indoor air quality can be risky, as it can lead to several respiratory conditions and other health problems. .