June 1, 2025
In the past two years, the "coal to electricity" clean energy heating renovation project has been rapidly popularized. Some areas have also begun to implement a ban on coal-fired heating. Many people are wondering what kind of air source heat pump to install? Fixed frequency or inverter? What are their respective advantages and advantages? What is the working mode of fixed frequency and inverter air source heat pumps?
inverter air source heat pump is an advanced DC inverter technology. Unlike the previous fixed frequency units, it only relies on a single frequency to operate and cannot adjust to changes in external temperature. It will shut down briefly after reaching the set temperature. The uninterrupted opening and closing not only affects the service life of the compressor, but also consumes more electricity.
When the inverter air source heat pump reaches the temperature setting value, it can automatically adjust the operating speed of the compressor and the motor, automatically adjust the working frequency output power, and run at a low speed without stopping. It not only improves the operating efficiency, but also saves electricity bills for users. So more and more people are buying air source heat pumps with inverter for this reason.
1. Comparison of stability between fixed frequency/inverter air source heat pumps
During operation, no matter how large the load of the main unit is, the fixed frequency air source heat pump can only operate at one frequency. When the temperature reaches the set temperature, it will shut down, and when the temperature drops to the range, it will restart. In addition to consuming electricity, such frequent shutdowns and restarts will also affect the life of the compressor.
The inverter air source heat pump can automatically adjust the number of compressor revolutions according to changes in ambient temperature, and the operation is more stable, without the feeling of sudden changes in temperature. Even if the temperature is reached, it will not shut down, but maintain operation with low energy consumption. Therefore, in terms of service life, energy consumption and life, the inverter air source heat pump is better.
2. Low temperature heating of fixed frequency/inverter air source heat pumps
At room temperature, the heating energy efficiency of fixed frequency air source heat pumps and inverter air source heat pumps is not much different, but the lower the temperature, the more obvious the difference. Taking inverter air source heat pump + floor heating air conditioner as an example, at 15℃-20℃, the heating capacity of inverter air source heat pump and fixed frequency air source heat pump is less than 10%. At minus 15℃, the heating capacity of inverter air source heat pump is about 60% higher than that of fixed frequency air source heat pump, and at minus 25 degrees, the difference increases to 80%. It can be seen that it is best to choose inverter air source heat pump heating in areas with low ambient temperature, otherwise it will not be able to provide stable and continuous warmth for the room.
The main application areas of Leomon air source heat pump are hot water, heating and drying. There is no doubt that the heating and cooling field is developing the fastest. In the north, it has replaced air conditioning and become the first choice for cooling and heating in winter and summer. Air source heat pumps are not only similar in working principle and function to air conditioners, but also in development routes. After the fixed frequency technology matures, it gradually develops towards inverter.
