Air-to-water heat pumps

Accumulating atmospheric heat is a versatile space-saving solution as air is available all the time and everywhere; unfortunately, the system effectiveness decreases with lower ambient temperatures.

Furthermore, increased noise has to be expected!

Method of operation: Fans blow ambient air into the heat pump, which takes its energy and transforms it into hot water for the home.

Advantages:

• Easy installation

Disadvantages:

• Accumulating atmospheric heat is a form of ancillary heating; the heating possibilities of these pumps depend on ambient temperatures. If temperatures fall below a certain limit (according to air humidity), additional heating is necessary (electricity, others) to compensate the heat consumption or for heating itself.
• Overall effectiveness is lower in regions with colder winters.
• Noise: outdoor units are very noisy. Warning, noise pollution is punishable. The noise level of water/air heat pumps often exceeds limits allowed by laws! For example, depending on specifications valid in various countries, the limits are: Day: 30dB(A)+5dB(A), Night: 30dB(A)+3dB(A).
• In some countries, it is necessary to observe distances to the nearest houses. The increased number of complaints has probably led to the toughening of codes for air-to-water installations.
• Effectiveness decreases during defrosting: Defrosting cycles are not included in the overall heating factor (COP); the more frequent they are, the lower effectiveness achieved.

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