- EN
In air-source heat pumps and commercial heating equipment, the low-temperature performance of the compressor directly determines the stability and heating efficiency of the whole unit. Many general-purpose compressors suffer from severe heating capacity attenuation, slow defrosting and soaring energy consumption under cold winter conditions. As a twin rotary DC inverter compressor dedicated to heat pumps, the Panasonic 9RD220ZDA2J, with customized structural design, has become a preferred core component for small and medium-sized low-temperature heat pumps.
The 9RD220ZDA2J is an enhanced model developed by Panasonic for continuous heat pump operation and low-temperature working conditions. Different from ordinary air conditioning compressors, it adapts to the operating logic of long-duration heavy-load operation and repeated defrosting for heat pumps.
Key Specifications: 22.0cc displacement, rated cooling capacity 8635W, input power 2315W, DC280V DC inverter, R32 eco-friendly refrigerant. Suction pipe: 12.9mm; discharge pipe: 8.06mm with well-matched piping layout. The unit has passed CCC, TUV and PED certifications, meeting acceptance standards for commercial engineering projects.
Application Scope: Low-temperature heating heat pumps, domestic hot water heat pumps, swimming pool constant-temperature heat pumps and small & medium industrial constant-temperature equipment.
This model is equipped with the EVI vapor injection system. It optimizes compression conditions via intermediate gas injection, lowering compression temperature rise and mitigating heating attenuation. It can operate stably for heating at -15℃, reducing reliance on auxiliary electric heaters in low-temperature environments and cutting overall power consumption, suitable for heating projects in cold regions in winter.
The symmetrical twin rotary structure counteracts inertial force during operation, fundamentally reducing vibration and preventing pipe loosening or cracking after long running. Fitted with Panasonic exclusive dual silencer cover to buffer airflow noise, it delivers stable running sound without high-frequency noise, ideal for residential communities, homestays and commercial indoor projects requiring low noise.
The oil system is optimized for 24h continuous heating and frequent defrosting of heat pumps. It ensures sufficient lubrication for core parts during cold start and heavy-load operation to reduce wear and aging. Compared with ordinary general compressors, it offers superior stability for continuous operation and lower long-term maintenance costs.
Most compressors on the market adopt universal designs and cannot balance heating output, low-temperature performance and durability. The 9RD220ZDA2J is specially optimized for heat pump applications, featuring stable performance under low temperature, low vibration & quiet operation, and reliability under continuous heavy loads. The compressor itself delivers high COP, serving as the hardware foundation for high unit energy efficiency.
The Panasonic 9RD220ZDA2J comes without overhyped marketing concepts. It is a pragmatic flagship model targeting heat pump challenges including low-temperature heating, noise and durability. With mature technology and stable performance under various operating conditions, it is a highly recognized dedicated low-temperature heat pump compressor among equipment manufacturers and engineering contractors.
