Press Information

MHI Thermal Systems to Launch 6 New Models in its Commercial-use Air-conditioner Lineup
-- New 20HP Model Responds to Large-capacity Demand, Delivers Industry Leading Energy Efficiency --


・ Large-capacity 20HP outdoor unit added to lineup

・ 20HP unit offers smallest installation space

・ Height differential between indoor/outdoor units expanded to 90m

Tokyo, November 7, 2017 - Starting next February, Mitsubishi Heavy Industries Thermal Systems, Ltd. will launch six new "LX5" models consecutively as part of its "Hyper Multi" series of commercial-use air-conditioners. The LX5's outdoor units will offer a choice of 10, 12, 14, 16, 18 or 20HP (Horsepower) outputs, allowing two or three units to be integrated in 20 different combinations to deliver up to 54HP.

With the addition of the new 20HP model to the lineup, users can now opt to use one single unit (rather than two 10HP units) meaning significant reduction in installation space. Upgrading from the earlier dual configuration to one 20HP unit can be carried out with ease.

In all new models in the Hyper Multi series the external static pressure of the outdoor fan has been substantially increased to 85 pascals (Pa), the highest specification in the industry*1. This results in improved exhaust performance from the outdoor unit. Boosting the response capacity to the exhaust duct enables greater flexibility in locating the outdoor unit, permitting installation in tight urban settings where placement of earlier units had been impractical.

In addition, the height differential between the outdoor and indoor units has been expanded to 90 meters (m), one of the largest in the industry, and the differential between two indoor units on the same line has been increased to 30m. These improvements facilitate their use in high-rise buildings where indoor units are installed on multiple floors. Further, the maximum outdoor (ambient) temperature range during cooling mode has been raised to 46°C DB (dry bulb), up from the LX4's 43°C DB, for enhanced installation flexibility.

Basic air-conditioning performance has also been improved. Most notably, the installation space required with the 20HP model is only 0.97m2 (W1350×D720 mm), less than half the earlier dimensions. Also, cooling COP*2 is 2.77, enabling the industry's highest energy efficiency in a 20HP unit*1.

Going forward, MHI Thermal Systems will continue to respond to diverse replacement needs through the development of outstanding commercial-use multi air-conditioners, package air-conditioners, and other equipment that offers easy and convenient installation. Through pursuit of ever-greater energy savings, the Company will contribute to global environmental protection.

*1: Valid as of November 2017, based on MHI Thermal Systems' investigations.
*2: Coefficient of performance (COP): the ratio of a system's useful energy output to its energy input. The higher a system's COP, the greater is its energy-saving efficiency.

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit or follow our insights and stories on