Celsius Benelux

What Celsius Benelux does

Celsius Benelux B.V. is a Dutch building management systems integrator and product company founded in 1996 and headquartered in Amersfoort, Netherlands. The company designs, delivers, installs, and maintains energy management systems and building automation solutions under its proprietary ComfortKey® platform — a wireless, IoT-based GBS (Gebouwbeheersysteem) integrating climate control, lighting, sun blinds, security, access control, energy management, and illumination control using open communication protocols (DALI, Modbus RTU/RS-485). Core hardware products include the ComfortKey® Integrated Multisensor, Integrated SmartSense, and CKSunBlindDB, complemented by the ComfortKey® App and API for mobile and third-party integration, with beacon-based indoor positioning and asset tracking. Products are manufactured and assembled in the Netherlands.

Celsius Benelux operates as part of the Celsius Groep alongside three wholly-owned subsidiaries: Celsius Energy Services (post-project service, maintenance, and energy optimization), Celsius Products (advanced climate and lighting control products), and Celsius Integrated Security (building security systems). The group is privately held and led by Director/Owner Theo Smulders, with no disclosed external institutional investors. The company holds VCA, ISO 9001, and NEN Veiligheidsladder Light (SCL Trede 3) certifications supporting its position as a qualified contractor for institutional and government work.

The company sells through a direct enterprise field-sales motion, engaging building owners, general contractors, architects, and facility managers on complex utility and commercial building projects across the Benelux region. Revenue is generated from one-time project licensing/installation, ongoing service and maintenance contracts, and hardware sales. Named enterprise customers span data centers (NorthC, Digital Realty, KPN), hospitality (Rosewood Amsterdam), healthcare (Bergman Clinics), government (International Crime Court), education (InHolland), and commercial real estate (AFAS Software, Central Park Utrecht, PI-59 Amsterdam, VolkerWessels), with no public revenue disclosure.

Name

Celsius Benelux

Legal name

Celsius Benelux B.V.

Website

https://celsiusbenelux.nl

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

Celsius Benelux is a Dutch building management systems integrator (founded 1996, ~50 employees) that designs, installs, and maintains its proprietary ComfortKey® wireless GBS platform across the Benelux, serving enterprise customers in data centers, hospitality, healthcare, government, and commercial real estate.

Ownership category

akta.pro rank

Product category

Building Management Systems

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Building Connectivity Infrastructure (Wired/Wireless, Gateways, Edge) (HSAPAPAN)

akta.pro secondary industry

Lighting Controls & Building Integration (Drivers, sensors, dimming, lighting control panels, networked lighting) (IMAGAIAI)

Keywords

• Building management systems
• Climate control solutions
• Wireless building automation
• Energy management integration
• IoT building sensors

Headquarters

HQ city

Amersfoort

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Building Management System (GBS) Projects: Design, engineering, installation, and commissioning of complete building management systems for commercial and utility buildings. Projects include climate control, lighting control, sun blind control, security, access control, energy management, and illumination control.
2. Service & Maintenance: Aftercare for new projects including troubleshooting analysis, energy optimization, and maintenance of existing installations. Also handles extensions to existing installations and execution of new small projects.
3. Products: Sale of hardware products including sensors, controllers, and IoT devices. Production takes place in the Netherlands and assembly in their own workshop.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Celsius Benelux designs, engineers, installs, commissions, and maintains the proprietary ComfortKey® wireless building management system (GBS) for commercial and utility buildings. The platform integrates climate control, lighting, sun blinds, security, access control, energy management, and illumination control via open wireless communication protocols, supported by IoT multi-sensors, a mobile app, and an API. Hardware products (sensors, controllers, IoT devices) are produced and assembled in the Netherlands.

Product overview

Celsius Benelux offers the ComfortKey® platform family of building management products. The core platform is ComfortKey® GBS, a building management system using open wireless communication technologies. Key products include ComfortKey® Integrated Multisensor (IoT router with multi-sensor integration and beacon detection), ComfortKey® Integrated SmartSense (space control device with Modbus/wireless support), and CKSunBlindDB (sunblind controller). The ComfortKey® App provides mobile control of climate, lighting, and sun blinds with beacon-based indoor positioning. Products are designed with a philosophy of more functionality with less hardware, featuring wireless communication technology and open protocols including DALI and Modbus.

Differentiator

Problem solved

Functional benefit

Brands

• ComfortKey: Trademark brand under which Celsius products and solutions are offered, including the ComfortKey app, ComfortKey-GBS, SmartFlow, Integrated Multisensor, Integrated SmartSense, and CKSunBlindDB products.
• ComfortKey Wireless
• SmartFlow
• Integrated Multisensor
• Integrated SmartSense
• CKSunBlindDB

Products and services

• ComfortKey® Integrated Multisensor
• ComfortKey® Integrated SmartSense
• CKSunBlindDB
• ComfortKey® App
• ComfortKey® GBS Building Management System
• Building Management System (GBS) Project Engineering, Installation & Commissioning
• Service & Maintenance (via Celsius Energy Services)

Quantifiable outcome

• Remote management reduces travel costs for service operations
• +2 more outcomes

Named customers12 records

Segments8 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature7 records

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Emerging players

• Lutron Electronics: Specialist in lighting and blind controls (Quantum, myRoom) with strong penetration in hospitality (e.g., Rosewood-class properties) and high-end offices — directly comparable to ComfortKey's lighting and sunblind integration offering in the same Dutch segments.

Broad incumbents

• Siemens Smart Infrastructure: Provides Desigo CC and other building management platforms integrating HVAC, lighting, and energy; competes for the same large commercial, healthcare, and data center projects in the Benelux and across Europe.
• Johnson Controls (Metasys): Metasys is a long-standing BMS platform used across commercial real estate, healthcare, and education; competes with ComfortKey in the same Dutch tender universe and offers a comparable open-protocol stack.
• Schneider Electric (EcoStruxure Building): EcoStruxure Building Operation is an integrated BMS platform with strong presence in data centers (alongside Celsius customers like NorthC and Digital Realty) and office portfolios — a broad-incumbent alternative to ComfortKey in multi-discipline tenders.
• Honeywell Building Technologies: Global BMS and integrated building platform (Honeywell Forge, Niagara, BMS controllers) competing across the same data center, healthcare, hospitality, and office verticals Celsius serves, but at a much larger scale and with a cloud-software-first roadmap.
• Signify (Philips Lighting / Interact): Provides Interact Office and connected lighting systems including DALI-based lighting controls and IoT sensors; overlaps with Celsius's lighting control and integration capabilities in commercial real estate projects.

Others

• KNX Association / KNX-based integrators: KNX is the dominant European open-standard bus for building automation; the ecosystem of KNX-certified integrators competes with ComfortKey Wireless in Dutch residential and commercial projects and shapes interoperability expectations.

Direct peers

• Priva: Dutch-headquartered building automation and climate control specialist with deep presence in horticulture, commercial buildings, and indoor climate; directly comparable as a Benelux-rooted BMS integrator competing in similar Dutch projects and using open protocols for HVAC and energy management.
• Loytec (Delta Electronics): Vienna-based BMS specialist offering L-INX/L-ROC controllers and a focus on integration with BACnet, LonWorks, Modbus, and DALI — highly comparable to ComfortKey as a mid-sized European open-protocol BMS vendor targeting commercial buildings.

Regional players

• Desco (Bouwgroep) / Dutch regional BMS installers: Dutch and Benelux regional building-services contractors that deliver competing BMS and HVAC installations for utility buildings; representative of the local integrator peer set Celsius competes against on tenders.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/celsius-benelux-bv
• Xx.com/celsiusb

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries3 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 Celsius Benelux