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All over America different respiratory problems including asthma and also cases of allergies are in a steady rise. This has led many people to place their trust on air purifiers. However there are so many models available these days that it has become very difficult to choose one particular model. Here are some tips to help you take a decision on the purifier to buy.

The first thing you need to have an idea about is where you are going to keep the air purifier as in which room would you be using it for. Once you know that measure the dimensions of the room. You shouldn't be guessing on this and it would hardly take you a minute to measure the length and breadth of the room. Multiplying the length and breadth of the room gives you the square the footage of the room. You also need to keep in mind the kind of traffic in the room and what activities happen inside. This will give you a fair idea as to what capacity air purifier would you be needing. It is better to go for a purifier that has a bit more extra capacity than the size of your room demands, but in no way should it be less than the required capacity.

The kind of use the room is put in to dictates what kind of filter you would be needing. If someone smokes in your family then you would be needing one of those air purifiers with activated carbon filter which will be able to absorb the cigarette smoke. Similarly if you have a pet then the pet dander will be tackled better by a HEPA filter than an ionizer.

If you are buying a HEPA purifier then also be sure you check the noise levels as in some models it can be too annoying to have it in your living room or bedroom. With ionizer models the noise from the purifier is generally not an issue.

If you are settling for an ionizer air purifier you must use it in conjunction with a vacuum cleaner as for bigger particulates that remain suspended in the air, the air purifier is not all that effective.

Before taking the final call, consider the filter that comes with the purifier. If it needs replacement after a very short span of time, then you might need to reconsider your choice. Filters can be expensive, so replacing them every 6 months might not suit you budget. Ionizers do not need any filters. But they have to be cleaned regularly.