What is Full DC Inverter Heat Pump?

In the 1990s, Japan pioneered DC inverter technology, which proved to be superior to AC inverter technology. Since then, DC inverter heat pump has gained rapid popularity and become the primary development focus for modern heat pumps.

DC inverter technology refers to that the motor is driven by DC, and the speed of the motor is controlled by adjusting the frequency of the input power supply to achieve stepless adjustment. Some products claim that the DC inverter may only be driven by the compressor motor.

Full DC inverter technology applies to all power components of the system, including the compressor motor, main engine fan motor, and fan coil fan, all operating with DC inverters. Compared to a simple compressor DC inverter, this ensures greater adjustment flexibility for the entire system.

What are the excellent performances of full DC inverter technology?  

Full DC inverter technology delivers outstanding performance, with the frequency converter playing a central role as the "brain" of the system, enabling precise regulation and adding significant value to the product.

1. Lower energy consumption—up to 48% energy saving  

Compressors and fans, being the primary sources of power consumption, benefit significantly from DC inverter technology, which enhances operating efficiency. Research indicates that DC inverter compressors operate 10%–30% more efficiently than AC inverter compressors, with potential energy savings reaching up to 48%.  

2. Precise temperature control with fluctuations ≤0.5℃  

Stepless inverter control enables precise regulation of end temperatures. Using 180° sine wave vector variable frequency control technology, temperature fluctuations can be minimized to ≤0.5°C. In contrast, conventional fixed-frequency systems often experience temperature fluctuations of up to 5°C, making DC inverter technology 10 times more accurate in temperature control.

3. Low-temperature resistance—efficient operation at -30℃  

Standard low-ambient temperature air source heat pumps typically function efficiently in environments above -12°C, with diminished heating performance as temperatures drop. However, the adoption of ultra-low-temperature EVI air jet enthalpy variable frequency control enables efficient and stable operation even in ambient temperatures as low as -30°C.  

4. Low vibration and noise—reduction by 5 decibels  

Noise in air source heat pumps largely originates from compressor and fan vibrations, as well as the electromagnetic noise of the motor. This vibration can propagate through pipes and sheet metal, potentially causing resonance that damages the structure. With adaptive intelligent torque compensation vibration suppression technology, overall noise levels are reduced by approximately 5dB(A).

5. Water temperature up to 65℃  

Leveraging adaptive EVI jet enthalpy technology, the system intelligently adjusts air supplementation to ensure efficient and stable operation across various conditions, achieving an outlet water temperature of up to 65°C.  

6. Precise defrosting  

Advanced intelligent defrosting control technology and accurate defrost cycle management significantly minimize capacity loss caused by unit frosting, ensuring consistent high water outlet temperatures even in low-temperature environments.  

Full DC inverter heat pump builds upon traditional air source products by integrating DC inverter control to meet enhanced energy-saving and comfort demands. It bridges the gap between user needs and supply capabilities in the household market, with its advancement deeply reliant on the inverter control innovations from the upstream supply chain.