чтобы иметь чистый воздух в доме мы можем установить кондиционеры,почаще открывать окна,проветривать квартиру,делать генеральную уборку во всей квартире.
to have clean air in the home we can install air conditioning, often opening Windows, ventilate the apartment to do a general cleaning throughout the apartment.
to have clean air in the house, we can install air conditioners, often open the windows to ventilate the apartment, doing general cleaning around the home.
to have fresh air in the house, we can install the air conditioning, often open the window, aired the apartment, do the cleaning in the whole apartment.