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, do spring cleaning in the apartment.