Air-to-air heat pump is the simplest type of heat pump. This unit is very similar to an air conditioner, but it is also designed for heating rooms during the cold winter months. Manufacturers recommend using a standard air conditioner in heating mode when the outdoor air temperature is down to minus 5 degrees, while an air-to-air heat pump can provide efficient operation down to as low as minus 25 degrees.
Using air-to-air heat pumps, rooms can be heated quickly while providing fully automated heating. An air-to-air heat pump provides warmth on cool autumn or summer days, during cold winter weather, and can also cool the air in summer heat. These units are most often installed in apartments, holiday homes, small and medium-sized houses and properties where there is no central heating or where installing it would be uneconomical. Heat pumps operate quietly and are equipped with various filters that help clean indoor air from bacteria and dust.