When you are faced with the daunting task of choosing an air purifier for your home and office, you have to take several factors into consideration to ensure that you purchase the right one for you. It is very important to determine the seriousness of the air problem you need to correct. People who have serious allergies really need to have the air as pure as possible and need a more expensive air purifier than those with mild allergies. You also have to know the exact nature of the allergies in order to get the right one. There are air purifiers specially designed for people with asthma and need on that filters out gases and odors. A general air purifier will eliminate odors from cooking, while one that is needed for filtering out smoke requires a larger and more powerful filter.
The type of purifier you need also depends on the size of the room that it is needed in because in order to be effective the machine must be able to exchange the air several times an hour. Initially the room will have many pollutants in the air and air changes are needed to effectively remove them. After this the air purifier will be able to maintain the purity of the air. Less air changes will be needed in a smaller room than in a larger one. It also depends on how much activity takes place in the room and how often doors will be opening and closing to allow more pollutants into the air. The normal rate of air exchanges that are needed is anywhere from 2 to 8 an hour. For removal of gases from the air, you will need a purifier where the fan runs at a lower speed for greater efficiency.
You also have to decide where the purifier will be placed in the room. You will need a machine that runs quietly for bedrooms, but a family or living room will have more traffic so you will need to have a different one in these rooms. The best place for an air purifier is in the middle of the room, but placing on the side or the ends of a room is also effective.
The noise level of the air purifier depends on personal tastes. If you do not mind the background noise then you won’t have much of a problem, but some people cannot function when there is a lot of interference. You will also be able to clean the air in a large room, so you can run it at low speeds and cut down the noise level significantly. The higher the speed of the purifier, the noisier it will be. Some air purifiers use an infrared detector to monitor the amount of particles in the air. In general, when air purifiers are first turned on they will operate at high speed because they have a lot of work to do. As the air is cleaned, they will not have to work as hard and therefore the fan will slow down.
Two important things you need to consider are the amount of air that the purifier can clean per hour and the percentage of efficiency it has for removing the particles from the air. A machine with a high percentage, such as the HEPA filter with 99.7% efficiency, will certainly be able to assure you of having pure air. You also have to look at how difficult it is to change the filters. The best purifiers are those that have a door you pull out to take out the filter and replace it with a new one. This is one of the factors that many people overlook when purchasing an air purifier and become very frustrated with changing the filter.
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