£40m refurbishment

8 new floors built inside Listed facade

350+ indoor units installed

The Challenge

Speed of installation was a key requirement for this project so that it could adhere to the programme set out by builder Brookfield Multiplex. This gave the installer three to four weeks to completely install the air conditioning on each floor. At the same time, a high-end finish was required demanding the best possible quality of installation.

Mixed-use buildings such as 48 Leicester Square also require cooling in some areas and heating in others, even in adjacent rooms, demanding a flexible, fully controlled system that delivers complete comfort in the most energy efficient way possible.


Leicester Square 1

The Requirements

Mixed-use buildings such as 48 Leicester Square require cooling in some areas and heating in others, even in adjacent rooms. This demands a flexible, fully controlled system that delivers complete comfort in the most energy efficient way possible.


Leicester Square 2

The Solution

The City Multi VRF system provides energy efficient heating and cooling to the different zones on each of the eight floors. The units distribute surplus heat from cooling operations (and vice versa) to rooms where it is needed, with this efficiency resulting in energy savings of up to 30% over conventional systems.

City Multi offers complete design flexibility and can also be installed in phases around any construction work or refurbishment.


Leicester Square 3 v2

The City Multi Mitsubishi Electric system was chosen with BREEAM Excellent standards in mind. This was an eco-friendly project that required an energy efficient air conditioning system to match.

Ian Armstrong
Mechanical Design Engineer,
Hilson Moran

Products Used

R2 standard heat recovery systems with energy variety

R2 Series Replace Multi Heat Recovery

28 City Multi PURY-P200YJM-A outdoor condensing units provide simultaneous heating and cooling to over 350 indoor units throughout the development.

AE 200 controller

AE-200E Centralised Controller

A total of 16 AE-200 touch-screen centralised controllers have gone in to oversee the system, with each controller able to monitor up to 50 indoor units.

MELCOBEMS Mini Procon control

MELCOBEMS Interface

Mitsubishi Electric’s Procon MelcoBEMS has also been installed on the project, providing an interface between the building management system and Mitsubishi Electric equipment via Modbus or BACnet protocol.