Air cleaners are machines that filter out dust, pollen and other allergens from the air and you will probably need one for each room. An air cleaner can only clean the air in a specific amount of space depending on how large the air cleaner is. These cleaners have removable filters which can be replaced or clean when they get dirty. You can also purchase special filters to be fitted on your heating or air conditioning system that help to remove allergens from the air in the entire house depending on your heating and air conditioning set up. Simply running air conditioning in the house does a great deal to clean the air and you can even run air conditioners on warm in cooler weather.
Every air conditioner has a filter which traps air borne particles.
Removing wall to wall carpeting in favor of bare floors and area rugs can do a great deal to remove these allergens from your home. Dust mites live in carpeting and it is impossible to remove them and their droppings from your carpet. Steam cleaning may help slightly but it is not a long term solution. Bare floors can be swiped with a damp mop daily to pick up any dust or pollen. It is especially important to remove the carpeting from the bedroom where the allergic person sleeps.