Japanese electronics manufacturer Panasonic has announced its new Eolia X Series of residential split air-to-air heat pumps, designed to provide space heating and cooling in Japanese homes.

Initially conceived for the Japanese market, new range comprises several capacity classes, with rated cooling outputs from 2.2 kW to 9.0 kW and rated heating outputs from 2.5 kW to 10.6 kW. Maximum heating capacity reaches 11.8 kW, depending on the model.

The systems use R32 (difluoromethane) refrigerant, with a global warming potential (GWP) of 675 and refrigerant charges ranging from 0.70 kg to 1.68 kg across the product lineup.

According to Panasonic’s published specifications, the units achieve annual performance factors (APF) of between 5.5 and 7.1 under the Japanese JIS C 9612:2013 standard. These values are not directly comparable with the seasonal coefficient of performance (SCOP) figures commonly used for European heat pumps. However, they indicate relatively high seasonal efficiency, broadly consistent with modern high-efficiency inverter air-to-air heat pumps, which can achieve SCOP values of around 4 to 5.5 under European average-climate test conditions.

The company said the new generation features improvements to compressor operation during heating. Panasonic claims that the minimum heating output has been reduced by approximately 25% compared with a previous model, enabling more precise heating operation under low-load conditions.

The heat pumps comprise wall-mounted indoor units connected to outdoor units through refrigerant piping. Depending on the capacity class, the outdoor units measure 630 mm to 796 mm in height, 799 mm to 849 mm in width, and 299 mm to 319 mm in depth.

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