Air Source Heat Pump Advantages:
1. It operates all the year round and is not affected by night, overcast day, rain, snow and other weather.
2. The operation of the whole system is a safe and reliable central air-conditioning system, which is free from the risks of flammability, explosion, poisoning and short circuit that may exist in traditional boilers (oil or gas or electric boilers).
Air Source Heat Pump Disadvantages:
1. One of the main disadvantages of air source heat pump is its huge volume.
2. When the air temperature is lower than zero, the efficiency of the unit will decrease. When the ambient temperature is lower than - 5 ℃, the efficiency of the unit will be extremely low, even unable to start the unit. Auxiliary heat source shall be added. The cop of auxiliary heating is less than 1.
3. In winter, outdoor units need to be stopped frequently for defrosting. As a result, the defrosting loss accounts for about 15% of the total energy consumption of heat pumps. In some areas, due to the high air humidity, the external units usually start to frost when the ambient temperature is 5 ℃.
4. In summer, when the air temperature is higher than 35 ℃, the efficiency of the air conditioning unit begins to decline. The higher the air temperature is, the lower the refrigeration efficiency of the unit is, and the energy consumption increases. When the air temperature is 30 ℃, the energy efficiency ratio of the unit is only about 2.
5. Air source heat pump compressor is easy to burn out. The air source heat pump uses a circulating heating system, which increasingly exposes technical defects, that is, it is easy to aging and carbonize the compressor when operating under high temperature and high pressure conditions, and the system lubrication effect is not good, resulting in the compressor easily burned out.
6. The air conditioning unit is placed on the roof or outdoor, with noise pollution.
7. The outdoor unit (compressor) is exposed to the open air for a long time, and its service life is greatly reduced.
8. Dust collects on the radiator, which plays a role of heat preservation, hinders heat exchange and increases energy consumption.