One of the things that you should check is MERV ratings. To be on the safe side you should consider air filter with higher ratings especially from 5-14 can be better. The benefit of higher rating is that it has higher efficiency in removing dust and other contaminants. You find that their rating is guided by the ability to remover dust and contaminants in the air. Normally the ratings start from one to twenty and you don’t expect the one that is rated 1 to work the same way as the one with rank 20 the difference is efficiency. Apart from that, there are also some tough dusts that can only be removed by air filter with higher rating.
Cost of the air filter is another factor that should be considered. One thing that determine the price of air filter is the rating. You find that the ones that are highly rated tend to be very expensive than the once with lower ranks. It is important that you consider the quality of filter before you could purchase it. You should know that buying cheap filters will just complicate everything but instead you should go for the ones that are affordable but deliver good services. Therefore, it is necessary that you shop around as look for the best deal in the market.
Size of the air filters is also another factor that you should consider. It is important that you know the size of the existing filter to know the one to go for. Normally the sizes are written on the filter and if not, you should just measure them. Another thing you should make sure that the air filter you are choosing can fit well into the ventilation system of your house.
Another thing that you should check is the size of particles captured. In this you will be required to go for the one that can capture many dust particles. This will set you free from dusting the house all the time even though it will not eliminate all the dust from the house.
Another tip is using the references. This is important since some of your friends who have experience with filters will tell some of the models they are using. With this you will be more than sure of getting the best filter since it has been used before.
You can as well use some online research. This should be done through sites of dealers of air filter. When you go online you should concentrate on the reviews and the ratings of the air filters.