2026-03-12
◆ Two types of sensors, and functions using ions and ozone, maintain comfort and cleanliness (S / SK Series)
◆ High heating capacity ideally suited to cold regions (SK Series)
◆ Smartphone control as standard functionality (S / SK / R / TWF Series)
◆ Lineup in five series delivers comfortable spaces for diverse lifestyles
Tokyo, April 1, 2026 — Mitsubishi Heavy Industries Thermal Systems, Ltd., a part of Mitsubishi Heavy Industries (MHI) Group, will successively release 28 new models of residential-use air conditioners for the Japanese market for 2026, starting April 1, bringing the total lineup to 31 models including three models previously launched in November 2025. The lineup comprises nine models in the Company’s top-of-the-line S Series (six models in the 2.2–5.6kW class plus three models in the 6.3–8.0kW class launched in November 2025), all of which meet Japan’s FY2027 new energy-efficiency standards, four models in the SK Series with enhanced heating capacity for use in cold regions, six models in the high-performance R Series incorporating an automatic filter cleaning function, seven models in the standard T Series, and five models in the TWF Series of T Series models with smartphone control functionality included as standard. Together these models provide comfortable living spaces for diverse lifestyles.
“Refreshing Ion Mode” releases negative ions to inhibit the proliferation of viruses, bacteria and mold. “AQ Ozone Clean Mode” floods the indoor unit with ions and ozone to inhibit the growth of odor- and dirt-causing bacteria, and “AQ Ozone Heating Mode” uses heated-air drying to inhibit the growth of mold inside the indoor unit. These functions help keep the inside of the indoor unit clean.
Equipped with an ionizer module that efficiently generates ions at high voltage. By releasing ions during operation, the unit acts on airborne viruses, bacteria and mold, helping keep the air in the room clean.
The indoor unit is filled with ozone and ions to suppress the growth of bacteria that cause odors and dirt. In addition, drying the unit in fan mode inhibits the growth of mold and bacteria, and heated-air drying can further suppress heat-sensitive mold.
A motion sensor detects the movement of people, while a thermal sensor detects the location of people and changes in the temperature of walls and floors. This enables an “AI Automatic Comfort” operating mode that uses AI to automatically optimize comfort and energy efficiency, as well as “Sensor-Guided Airflow” and “Breeze Direction” operating modes to automatically regulate the direction of airflow, maintaining a comfortable living space.
Two sensors assess the status of people and the interior of the room, and automatically regulate temperature. The AI also learns how the room cools and warms, realizing both comfort and energy efficiency.
Two sensors assess occupant activity and the temperature of walls and floors, and automatically control airflow direction.
The SK Series incorporates a “Hot Standby Function” that preheats the compressor in response to outside temperature to shorten heating start-up time, along with a hot-gas bypass defrosting control system. With conventional systems, indoor temperature can drop by 4–5°C during the defrost cycle, making the room feel chilly and uncomfortable. With the hot-gas bypass defrosting control system, however, a portion of the high-temperature gas flowing to the indoor side is directed to the outdoor unit, limiting the drop in indoor temperature and providing non-stop heating.
The S Series, SK Series, R Series, and TWF Series are equipped with smartphone control as standard functionality, allowing operation from a smartphone without altering the outward appearance of the unit. These models can also be connected to a smart speaker (sold separately) to enable voice-activated control and confirmation of operating status, providing a high level of operability. The T Series can be linked to a smartphone by attaching a wireless LAN interface (sold separately).
All five series feature a “WARP” operating mode to quickly bring the room to a comfortable temperature, a powerful “JET Airflow” operating mode to deliver air to the far side of the room, and an “Allergen-clear” operating mode in which temperature and humidity near the filter are controlled to enhance pollen-suppression effects using urea and enzymes in the allergen-clear filter.
In addition, the R Series, T Series, and TWF Series retain a compact design with an indoor-unit height of 250mm, enabling installation even in tight spaces such as above tall windows or below clipped ceilings, and supporting a wide range of installation conditions including replacement upgrades.
Further, all series contribute to environmental conservation through filter holders made from a synthetic resin containing upcycled tea leaves, produced using the Tea Leaves Recycling System developed by Japanese beverage company ITO EN, Ltd.
###
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 www.mhi.com or follow our insights and stories on spectra.mhi.com.
Corporate Communication Department
Mitsubishi Heavy Industries Thermal Systems, Ltd.
Email: mediacontact_global@mhi.com