80 Charlotte Street

ARUP + Artus Air

Creating space, improving comfort and reducing energy use in a landmark central London retrofit.

Architecture & Design

Office

Overview

Arup wanted a workspace that felt open, calm and consistent with their energy-efficient approach to building design.

The retrofit at 80 Charlotte Street required a heating and cooling solution that would protect ceiling height, simplify coordination, and reduce both operational energy and whole-life carbon. 

Traditional fan coil units would have compromised the exposed soffit aesthetic and also added significant service complexity. Artus Air provided a low-profile, low-energy alternative that preserved the architectural intent while improving comfort and reducing operational carbon emissions. 

Key Stats

Client

Arup

Address

80 Charlotte Street, London

Build Type

Office Retrofit

Collaborators / Partners

Developer

Derwent London

Architects

Make

Perkins and Will

MEP contractor

T Clarke

Impact

About 80 Charlotte Street 

80 Charlotte Street is one of Derwent London’s flagship workspace buildings.
 

The CAT B retrofit over multiple floors incorporated Artus AR60’s into the heating and cooling solution to create a flexible, comfortable and beautifully coordinated aesthetic for Arup’s London teams. 

Standards achieved: BREEAM Excellent | LEED Gold | EPC B 

Industry: Engineering, Architecture and Design 

Customer type: MEP Consultant  

Role: Workplace Experience, Engineering Excellence 

Location: London, UK 

Challenge 

The retrofit incorporated exposed soffits, tight ceiling zones and a clear architectural vision. Preserving ceiling height was essential in both meeting rooms and open-plan areas. 

The Arup HQ needed an indoor air solution that aligned with Arup’s energy and design standards. 

By using Artus units, Arup: 

  1. Saved space in the ceiling void by using Artus units at roughly half the size of traditional fan coil units  
  2. Simplified ceiling coordination and integration complexity
  3. Removed ductwork that conflicted with the architectural intent
  4. Made energy and comfort targets easier to achieve
 
The project demonstrates collaboration among manufacturers, engineers, architects, and contractors to protect design quality, reduce carbon emissions, and improve comfort in complex retrofit environments.

Client Testimonial​

ARUP red logo

“Throughout the design process, the low energy credentials of Artus, combined with its design simplicity and adaptability, made it an obvious choice to incorporate into the 80 Charlotte Street fit-out.”

Iain Moore | Fit-out Services Design Lead

Solution

Arup selected the Artus AR60 system for its combination of energy performance, spatial efficiency and design integration. 

Artus Air enabled: 

  1. A slim 200 mm profile to protect the ceiling height 
  2. No secondary ductwork, reducing complexity 
  3. Clean alignment with exposed aesthetic 
  4. Faster installation with packaged compact units 
  5. Low operational energy and carbon emissions 
  6. Quiet, draught-free comfort from units that can deliver full coverage and 360-degree distribution at super low fan speeds

 

Artus units were installed across three floors, including meeting rooms, collaboration areas and the first-floor reception. 

Results

The retrofit delivered a coordinated, energy-efficient, and architecturally clean environment, improved comfort for Arup teams, and reduced long-term carbon emissions.
 

Artus helped the project achieve: 

  1. BREEAM Excellent | LEED Gold | EPC B
  2. 18,226 kg whole-life carbon savings
  3. Improved comfort stability across work zones
  4. Maximised ceiling height 
  5. Simplified maintenance from drop down access hatch

     

The project demonstrates collaboration among manufacturers, engineers, architects, and contractors to protect design quality, reduce carbon emissions, and improve comfort in complex retrofit environments. 

The LED lighting journey - innovation to mass adoption

Further Insight 

Florence Lam, ARUP Fellow and former Global Lighting Director, ARUP, speaks with Artus Air’s CEO, Rebecca Stewart, to explain how leading lighting design is driven by a human-centric approach. 


Watch or listen here

Similar Customer Stories​

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Our Patents

This product is protected by the following patents and other pending patent applications:

  • GB 2528890
  • US 1118793
  • AU 2015295067
  • JP 7138280
  • EP 3175180
  • GB 2569943
  • US 11378284
  • AU 2018390371
  • JP 7220858
  • CN 111868391
  • EP 3714168

 

The Trademark ‘Artus’ is registered as GB 3220151.

The following designs are registered: GB 6350052 to GB 6350063 and EM 15052307-0001 to 0012