AET

What AET does

AET Flexible Space (legal entity Advanced Ergonomic Technologies Ltd) is a UK-headquartered designer, manufacturer, and supplier of underfloor air conditioning (UfAC) systems for commercial office buildings. Founded in 1993 by Glan Blake Thomas following Hiross's acquisition by Emerson Electric, the company pioneered underfloor air distribution in the UK and operates from East Grinstead with regional offices in Hong Kong and Shanghai and a manufacturing facility in Italy. The company employs 11-50 people and serves commercial real estate developers, landlords, architects, and M&E consultants on new-build and major refurbishment projects, with named customers including Brookfield Properties, Nuveen, M&G Real Estate, FORE Partnership, Henderson Park, Morgan Capital, and Yard Nine.

AET's core technology centres on the CAM™ (Conditioned Air Module) air-handling units that condition air into the raised floor void, distributed into occupied space through Fantile™ floor-recessed terminal units (TU4 standard, TU3 slimline, TUC for heritage buildings). The system is configured as either CAM-V (downflow, supply-only plenum with high-level return) or CAM-C (upflow, separated supply/return plenums), and is managed through FlexTouch zone controllers and FlexMatic Touch central panels with BMS integration via Modbus or BACnet protocols. The company claims up to 52% energy savings (refrigerant-based) and up to 19% (water-based), 18% upfront carbon reduction and 16% whole-life embodied carbon reduction versus traditional ceiling-based HVAC, building height reductions of 10-18%, and a 25-30 year system life expectancy.

AET generates revenue through three streams: bespoke project-based hardware sales (CAM units, Fantile terminals, control systems) installed by appointed M&E contractors with AET providing commissioning; recurring service and maintenance contracts with 3-5 year extended warranties; and CAT-A and CAT-B fit-out services delivered by an in-house team. Go-to-market is direct enterprise field sales engaging throughout RIBA Stages 1-5, supplemented by RIBA/CPD-accredited Lunch & Learn seminars targeting architects and M&E consultants as specification-influence channels. Distribution is global with project concentrations in the UK (notably London) and Asia-Pacific (notably Hong Kong's 73-storey The Center landmark).

Name

AET

Legal name

Advanced Ergonomic Technologies Ltd

Website

https://flexiblespace.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

AET Flexible Space designs, manufactures, and supplies underfloor air conditioning systems — CAM™ air-handling units and Fantile™ floor-recessed terminals — for commercial office new-builds and refurbishments, serving developers, landlords, architects, and M&E consultants globally via bespoke hardware sales, recurring service contracts, and fit-out services.

Ownership category

akta.pro rank

Product category

Commercial Underfloor HVAC Systems

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

Keywords

• Underfloor air conditioning
• Commercial HVAC systems
• Flexible climate control
• Raised floor cooling
• Modular air handling units

Headquarters

HQ city

East Grinstead

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Underfloor Air Conditioning Systems & Equipment: Sale and installation of complete UfAC systems including CAM units, Fantile terminal units, control systems, and associated equipment for commercial office buildings. Systems are installed by appointed M&E contractors with AET providing commissioning services.
2. Service & Maintenance Contracts: Ongoing service and maintenance including quarterly visits, preventative and reactive maintenance, equipment surveys, plenum surveys, recommissioning, and spares/replacements. Extended warranties available from 3-5 years.
3. CAT-A & CAT-B Fit-Out Services: Design, installation, and recommissioning services for CAT-A shell and core and CAT-B tenant fit-out projects, including system reconfigurations and ongoing aftercare support.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels8 records

Core offering

AET designs, manufactures, and distributes underfloor air conditioning (UfAC) systems for commercial office buildings, comprising CAM Conditioned Air Module units, Fantile floor-recessed terminal units, and integrated control systems that use the raised floor void as an air plenum. The company delivers complete systems for new builds, refurbishments, and fit-outs, complemented by CAT-A/CAT-B fit-out services and long-term maintenance contracts.

Product overview

AET Flexible Space is a UK-based manufacturer of underfloor air conditioning (UfAC) systems, founded in 1993. The product portfolio is a modular, integrated system architecture comprising core air handling components (CAM™ Conditioned Air Modules in V and C configurations), floor-recessed Fantile™ terminal units (TU4, TU3, TUC models), smart control systems (FlexTouch zone controllers, FlexMatic Touch centralised panels), supplementary air distribution modules (Supply Air Booster Modules, Supply & Fresh Air Modules), and complementary accessories (Architectural Grilles, UVGI filters). The UfAC system uses the raised floor void as a plenum for delivering conditioned air directly into workspaces, eliminating the need for ceiling-based ductwork and enabling flexible workspace reconfigurations.

Differentiator

Problem solved

Functional benefit

Products and services

• Underfloor Air Conditioning (UfAC) System Complete underfloor air conditioning system using the raised floor void as a plenum for delivering conditioned air via floor-level Fantile units. Eliminates the need for ceiling-based ductwork and pipework and includes CAM air handling units, Fantile terminal units, and integrated controls. Designed for commercial office new builds and refurbishments.
• CAM (Conditioned Air Module) Units High-performance, acoustically lined local air handling units providing conditioned air into the floor plenum. Include refrigerant or chilled/hot water coils, replaceable fabric filters, and high-efficiency low-noise EC fans. Form the core air-handling component of AET's UfAC system for commercial offices.
• CAM-V System (Downflow Configuration) Downflow configuration using the floor void exclusively as a supply air plenum with high-level return air extraction. Best suited for open-plan office environments with ceiling returns.
• CAM-C System (Upflow Configuration) Upflow configuration dividing the floor void into dedicated supply and return air plenums. Suited for height-restricted buildings and cellularised office layouts without ceiling voids.
• Fantile Terminal Units (TU4, TU3, TUC) Modular floor-recessed terminal units delivering conditioned air directly into occupied spaces. TU4 is the standard unit (270mm void, 450-650 m³/h); TU3 is a slimline unit for shallow 200mm voids; TUC is a floor-mounted unit for heritage buildings with 160mm voids. Feature high-efficiency centrifugal EC fans, adjustable motorised dampers, optional electric trim heaters, and integrated Fatronic controllers. Relocatable within minutes.
• FlexMatic Touch Control Panel Centralised control panel mounted on CAM units managing up to 16 separate systems. Provides central monitoring, diagnostics, flexible scheduling, performance optimisation, and Building Management System integration via Modbus or BACnet protocols.
• Supply & Fresh Air Modules Compact high-performance components supporting flexible air distribution and improved ventilation strategies. Dual-function modules work for both supply air and fresh air, offering decentralised ventilation as an alternative to traditional centralised Air Handling Units.
• Architectural Grilles Premium architectural grilles available in custom sizes, finishes, and materials with signature options including brushed, mirror, copper, bronze, nickel, brass, and painted black. Bespoke options include custom patterns and integrated logos.
• CAT-A Fit-Out Services Design, installation, and recommissioning services for CAT-A shell and core office fit-out projects, including underfloor air conditioning system design and integration. Targeted at developers and landlords delivering speculative office space.
• CAT-B Fit-Out Services Design, installation, and recommissioning services for CAT-B tenant fit-out projects, including system reconfigurations to meet specific occupier requirements and ongoing aftercare support.
• Service & Maintenance Contracts Ongoing service and maintenance including quarterly visits, preventative and reactive maintenance, equipment surveys, plenum surveys, recommissioning, and spares/replacements. Extended warranties available from 3-5 years, backed by over 30 years of in-house service experience.

Quantifiable outcome

• Up to 52% energy savings for refrigerant-based systems, up to 19% for water-based systems
• +9 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature7 records

Partnerships

41 partnerships are on record, tiered core and minor.

• WSPcoreStrategic or Co-development PartnerAET collaborated with sustainability specialists at WSP to develop a comprehensive HVAC Comparison Study, comparing underfloor air conditioning performance against conventional ceiling-based HVAC systems. The study demonstrates measurable performance advantages including up to 19% operational energy savings, 18% upfront carbon reduction, and 16% whole life embodied carbon reduction.
• General ProjectscoreStrategic or Co-development PartnerKey development partner for multiple projects including Systems London Brook Green and Metropolis Marylebone. General Projects is a developer focused on innovative, sustainable workspace solutions.
• Buckley Gray YeomancoreStrategic or Co-development PartnerArchitectural practice for Systems London Brook Green project, designing the regeneration-led transformation of the historic building.
• Bennett ConstructioncoreImplementation/ SI/ Consulting PartnerMain contractor for Systems London Brook Green project, delivering the building transformation.
• G&H GroupcoreImplementation/ SI/ Consulting PartnerMEP consultant for Systems London Brook Green, providing mechanical and electrical engineering design.
• FORE PartnershipcoreStrategic or Co-development PartnerDeveloper of Tower Bridge Court (TBC.London), a pioneering all-electric, net-zero carbon workplace retrofit project.
• Stiff + TrevillioncoreStrategic or Co-development PartnerArchitectural practice for Tower Bridge Court project, designing the riverside office development.
• Willmott DixoncoreImplementation/ SI/ Consulting PartnerMain contractor for Tower Bridge Court, delivering the major office refurbishment and expansion.
• TClarkecoreImplementation/ SI/ Consulting PartnerM&E contractor for Tower Bridge Court, installing building services including AET's UfAC system.
• atelier tencoreImplementation/ SI/ Consulting PartnerM&E consultant for Tower Bridge Court, providing environmental and building services engineering.
• Henderson ParkcoreStrategic or Co-development PartnerReal estate investment firm co-investing in Metropolis Building Marylebone redevelopment with General Projects.
• Allford Hall Monaghan Morris (AHMM)coreStrategic or Co-development PartnerArchitectural practice leading Metropolis Marylebone redesign, transforming the 1959 Woolworth's headquarters.
• chapmanbdspcoreImplementation/ SI/ Consulting PartnerM&E consultant for Metropolis Marylebone, providing mechanical and electrical engineering services design.
• Yard NinecoreStrategic or Co-development PartnerDeveloper of Edenica at 100 Fetter Lane, a pioneering sustainable workplace development targeting BREEAM Outstanding.
• Fletcher Priest ArchitectscoreStrategic or Co-development PartnerArchitectural practice for Edenica project, designing the sustainable office development in London's Midtown.
• MacecoreImplementation/ SI/ Consulting PartnerMain contractor for Edenica, delivering the construction of the sustainable office development.
• WatermancoreImplementation/ SI/ Consulting PartnerM&E consultant for Edenica, providing mechanical and electrical engineering design.
• M&G Real EstatecoreStrategic or Co-development PartnerReal estate investor and developer of The Fitzrovia (247 Tottenham Court Rd), targeting WELL Platinum and NABERS 5 stars.
• Nomura Real EstatecoreStrategic or Co-development PartnerCo-investor in The Fitzrovia development alongside M&G Real Estate.
• Kier ConstructioncoreImplementation/ SI/ Consulting PartnerMain contractor and M&E contractor for The Fitzrovia project.
• Watkins PaynecoreImplementation/ SI/ Consulting PartnerM&E consultant for The Fitzrovia, providing building services engineering design.
• CLI DartrivercoreStrategic or Co-development PartnerDeveloper of Folgate Building (10 Norton Folgate), a multi-tenant office development undergoing major refurbishment.
• Nuveen Real EstatecoreStrategic or Co-development PartnerOwner of 9 Devonshire Square, a Grade II listed 18th-century warehouse redevelopment achieving BREEAM Excellent.
• John Robertson ArchitectscoreStrategic or Co-development PartnerArchitectural practice for 9 Devonshire Square refurbishment, preserving heritage features while modernising the workspace.
• Hoare LeacoreImplementation/ SI/ Consulting PartnerM&E consultant for 9 Devonshire Square, providing building services engineering.
• GMS EstatescoreStrategic or Co-development PartnerOwner of Bridge House (4 Borough High St), a Grade II listed 1832 building refurbishment completed in 2022.
• Emrys ArchitectscoreStrategic or Co-development PartnerArchitectural practice leading Bridge House refurbishment, obtaining planning consent for the heritage building transformation.
• Brookfield PropertiescoreStrategic or Co-development PartnerDeveloper of The Gilbert (40 Finsbury Sq), a 13,000 m² redevelopment of the 1930s building designed by Giles Gilbert Scott.
• Hilson MorancoreImplementation/ SI/ Consulting PartnerM&E consultant for The Gilbert redevelopment, providing building services engineering design.
• MACE GroupcoreImplementation/ SI/ Consulting PartnerMain contractor for The Gilbert redevelopment, delivering the major transformation.
• General ProjectscoreStrategic or Co-development PartnerDeveloper of Technique (Laser House) at 132 Goswell Rd, a conversion of historic Clerkenwell buildings into creative workspace.
• chapmanbdspcoreImplementation/ SI/ Consulting PartnerM&E consultant for Technique project, with long-time experience specifying AET's UfAC systems.
• GRAHAM ConstructioncoreImplementation/ SI/ Consulting PartnerMain contractor for Technique redevelopment, delivering the conversion of two historic buildings.
• Aukett SwankecoreStrategic or Co-development PartnerArchitectural practice for 7 Princes Street redevelopment, designing the transformation from 1970s frame.
• atelier tencoreImplementation/ SI/ Consulting PartnerM&E consultant for 7 Princes Street, providing environmental and sustainability engineering.
• RED ConstructioncoreImplementation/ SI/ Consulting PartnerMain contractor for 7 Princes Street redevelopment.
• Holland & HollandcoreGTM or Marketing PartnerVenue partner for AET's annual Shooting Day event at Holland & Holland Shooting Grounds, bringing together industry professionals.
• ARC EventsminorGTM or Marketing PartnerEvent coordination and logistical support for AET Shooting Day and other industry events.
• WildAboutminorGTM or Marketing PartnerEvent styling and floral arrangements for AET Shooting Day events.
• RIBAcoreStrategic or Co-development PartnerRoyal Institute of British Architects - AET is a RIBA Assessed CPD Provider offering accredited training on underfloor air conditioning.
• British Council for Offices (BCO)coreStrategic or Co-development PartnerIndustry body representing the office sector. AET participates in BCO events including ESG Summit 2026, contributing to industry dialogue on sustainable workplace design.

Scale indicators11 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Swegon: Swedish-headquartered HVAC manufacturer specializing in indoor climate, ventilation, and air distribution products for commercial buildings. Swegon's product range (air handling units, terminal units, controls) directly overlaps with AET's CAM and Fantile offerings in the European commercial office market.
• Trox: German global leader in ventilation and air distribution components, including terminal units, grilles, and dampers. Trox competes with AET for specification in commercial projects and serves the same MEP consultant and architect buyer base across Europe.
• FläktGroup: European HVAC manufacturer offering air handling units, fans, and ventilation systems for commercial and industrial applications. FläktGroup's commercial product line directly competes with AET's CAM-based air handling and underfloor distribution approach.
• Halton Group: Finnish indoor climate solutions provider with strong presence in commercial buildings, healthcare, and hospitality. Halton's air distribution, terminal units, and ventilation controls overlap directly with AET's Fantile/CAM product family.
• Systemair: Swedish-listed ventilation and indoor climate company with broad product portfolio across commercial, residential, and industrial segments. Systemair's air handling and distribution products compete with AET in commercial specification projects across Europe.
• Lindab: Swedish ventilation and air distribution manufacturer serving European commercial construction. Lindab's ductwork, grilles, and terminal devices overlap with AET's architectural grille and Fantile offerings in MEP contractor specifications.

Broad incumbents

• Trane Technologies: Global HVAC incumbent (formerly Ingersoll Rand) with comprehensive commercial HVAC portfolio including chillers, air handlers, and controls. Trane is a broad incumbent competing in the same commercial office specification channel as AET but across the full HVAC stack rather than specializing in UfAC.
• Carrier: Global HVAC incumbent with broad commercial building systems portfolio (chillers, air-side equipment, controls). Carrier competes indirectly via traditional HVAC systems but has the scale and R&D capability to enter the UfAC niche with bundled offerings.
• Daikin: Global HVAC and refrigeration incumbent with strong UK/EU presence across VRF, chillers, and air handling. Daikin's commercial product line competes with AET in MEP specifications but as part of a much broader portfolio rather than focused on underfloor distribution.
• Johnson Controls: Global building technology incumbent offering HVAC equipment, building management systems, and controls. Johnson Controls' open-protocol BMS offering (Metasys) overlaps with AET's FlexMatic/BACnet integration approach, and they compete broadly in commercial office specification.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/flexiblespace
• LinkedInuk.linkedin.com/company/aet-flexible-space
• Instagraminstagram.com/aet_flexiblespace
• Xx.com/aet_fss

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about AET