ZT Series 家用冷氣機 by Mitsubishi Heavy Industries (MHI)

ZT Series 家用冷氣機 by Mitsubishi Heavy Industries (MHI) is a highly esteemed winner of the very prestigious 2026 A' Design Award 金獎 in 暖通空調設計 Competition Category.

金暖通空調· 2026

ZT Series 家用冷氣機

by Mitsubishi Heavy Industries (MHI)

Client: Mitsubishi Heavy Industries Thermal Systems, Ltd.

A' Design Award 金獎 Winner in 暖通空調 Category

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The Design

About ZT Series 家用冷氣機

呢款掛牆式家用冷氣機融合咗優雅設計同先進工程技術。佢具備柔和、似面紗般嘅前面板，由頂部順滑流瀉而下。精緻嘅邊緣線條同光滑表面營造出低調、無縫嘅外觀，配以隱藏式螺絲同盒狀造型，自然融入周遭環境。儘管體積細巧，呢部機嘅性能依然強勁。風扇運用空氣動力學技術，喺保持低噪音嘅同時產生強勁氣流。

The Recognition

About the A' Design Award 金獎

ZT Series 家用冷氣機是 A' Design Award 金獎得主，這是授予一流、絕妙而傑出設計的極為崇高的認可。金獎得主是極具創新、極富遠見且璀璨奪目的創作，反映出其設計師的天才、智慧與才幹。預計ZT Series 家用冷氣機將成為一項備受讚譽、引領潮流、氣勢恢宏的發明，帶來前所未有的價值。這件贏得 A' Design Award 金獎的設計是一個壯觀而受人敬重的項目，極大地造福並拓展藝術、科學、設計和技術的界限。ZT Series 家用冷氣機激起強烈的渴望，喚起激情，鼓勵創造力，令我們著迷。

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: The wall-mounted residential air-conditioner blends elegant design with advanced engineering. It features a soft veil-like front panel that flows smoothly from the top. Refined edge lines and smooth surfaces contribute to a discreet, seamless appearance with hidden screws and a box-like form that blends naturally into its surroundings. Despite its compact size, the unit delivers powerful performance. The fan uses aerodynamic technology to generate strong airflow while maintaining low noise.
Dimensions & Packaging: Indoor unit dimensions (H×W×D): 290 × 870 × 230 mm
Tags: residential air-conditioning, climate-solution, low global warming potential, longevity
Production Technology: The unit is designed in Japan and manufactured at our factory in Thailand.

The compressor is produced using abrasive machining with micron-level precision, and the copper heat exchanger is assembled using expert welding techniques.

The unit is tested to ensure it is validated for around 10 years under various environmental conditions. In mass production, every single unit is tested for both cooling and heating functions, and test results are thoroughly recorded for consistent quality control.
Design Challenge: One of the key challenges in development was to create a high-density design that balances a compact size with easy servicing and efficient manufacturing.
The overall unit size was kept the same as existing models to ensure compatibility with current installation spaces, which are often limited in the field. At the same time, we reserved space inside the unit for optional parts, while still managing to improve performance and reduce noise in the remaining space.
Research: We also went beyond technical comparison by engaging in direct conversations with professional installers—the people who work closely with both customers and the product in real-world conditions. This field-based approach helped us understand actual needs during installation and daily use. As a result, we were able to shape the design to be more practical, user-friendly, and effective, while still maintaining high technical performance and a clean, modern appearance.
Inspiration: The unit was designed to blend naturally into living spaces without being obstructive. Thanks to improvements in the components, its seasonal efficiency has been enhanced. It can also continue heating even when the outdoor temperature drops to -20°C. To enhance practicality, we worked closely with installers, resulting in easily removable panels for pipe routing and a detachable fan, making maintenance simpler and the design visually clean.
Project Duration: The unit was developed over several years.
We gathered feedback of unit design from various countries, including input from people in sales, installation, service and marketing roles. The most important requests were carefully selected and integrated into the final product design.
During development, prototypes were created in multiple stages, and performance and quality were checked at each step to make sure the product would be reliable and durable.
Operation Flow: The unit is highly energy-efficient and silent, with a sound pressure level as low as 19 dB(A) in ultra-low mode—equivalent to the sound of rustling leaves. The newly developed fan contributes to this silence. For user convenience, the unit can be operated using a dedicated smartphone app. The system features three separate motors to independently control both the vertical and horizontal louvers, allowing precise airflow direction. To improve indoor air quality, the unit is equipped with an original "Allergen Clear Filter," and in some models, an ion generator is also included.
Patents: Mitsubishi Heavy Industries Thermal Systems, Ltd.
Team Members: Mitsubishi Heavy Industries (MHI)
Image Credits: Mitsubishi Heavy Industries Thermal Systems, Ltd.