Mitsubishi Electric Mr. Slim Series Overview

The Mitsubishi Electric Mr. Slim Series has long been recognised as a benchmark in commercial air conditioning.

Combining advanced inverter technology, proven reliability, and a wide range of configurations, it remains one of the most trusted HVAC solutions for offices, retail spaces, and small commercial buildings in the UK.

Product Range and Applications

The Mr. Slim range includes wall-mounted, cassette, ducted, and floor-standing indoor units connected to powerful yet compact outdoor modules.
It is ideal for:

• Offices requiring quiet and efficient cooling/heating.

• Retail stores and showrooms.

• Restaurants, healthcare clinics, and schools.

Available capacities range from 2.5 kW to 14 kW, providing scalable comfort solutions for single or multi-zone applications.

Performance and Efficiency

Mr. Slim systems use DC inverter scroll compressors and R32 refrigerant, achieving:

• SEER: up to 8.2

• SCOP: up to 4.7

• Energy class: A++

This ensures efficient temperature control, quick response, and reduced power consumption by up to 40 % compared with fixed-speed systems.

Noise and Comfort

Indoor sound levels start from 22 dB(A), making the system almost silent in operation.
Outdoor units feature variable fan speed and Night Mode, reducing noise further for densely populated urban areas.
These features make Mr. Slim perfect for offices where acoustic comfort is a priority.

Airflow and Zoning

Each system offers multi-directional airflow through Auto Swing and 3D Airflow functions.
The system supports individual room thermostats or centralised control for multiple zones — giving businesses flexibility in managing comfort and efficiency.

Smart Control and Connectivity

The Mr. Slim range integrates with MELCloud, Mitsubishi’s Wi-Fi app, enabling full control from smartphones or PCs.
BMS connectivity is available via BACnet, Modbus, or LonWorks, allowing integration with lighting and security systems for energy-optimised building management.

Installation and Service

Compact design and lightweight construction simplify installation.
Refrigerant pipe lengths up to 75 m and vertical lifts up to 30 m give flexibility in multi-storey buildings.
Service technicians benefit from self-diagnostic software and front-access panels for easy maintenance.

Environmental Impact

The use of R32 refrigerant reduces CO₂ equivalent emissions by 68 %.
All models comply with the EU EcoDesign Directive and F-Gas Regulation.
Energy-saving features such as Econo Cool Mode help reduce operational costs and carbon footprint.

Conclusion

The Mitsubishi Electric Mr. Slim Series combines high efficiency, quiet performance, and reliable operation in a versatile package.

It’s a proven commercial solution trusted by engineers and business owners alike, delivering cost-effective comfort across offices, retail spaces, and other commercial environments throughout the UK.