What Calidar does

Calidar, operating under the legal name ZEHNDER CALADAIR INTERNATIONAL, is a French industrial ventilation manufacturer founded in 1979 and headquartered in Mâcon, France. It is a wholly owned subsidiary of Swiss-listed Zehnder Group AG. The company designs and builds ventilation, air treatment, and climatic-comfort equipment organized into three core product lines: Simple Flux (single-flow), Double Flux (double-flow with heat recovery), and Fire Safety / smoke extraction (including the PyroStar™, Diablo™, and Reflex™ F400-120 ranges). Its flagship decentralized solution, EVERSKY™, is covered by 4 patents and targets high Indoor Air Quality, while the CLEARMOTION™ program (launched 2021, EN 17272:2020 tested) extends the portfolio into continuous air and surface decontamination. Supporting the hardware are the BLUETECH™ air handling unit, AquaPack™ regulation cabinet, Econizer™ C4 extraction units, MinimAx™ extra-flat units, and CombiBox Concept™ modular central units.

Underpinning the product line is a proprietary digital toolset: the SOFTWAIR sizing application (multi-criteria selection on technical, regulatory, economic, and ecological dimensions) and the BIMGO™ Revit/IFC object library, distributed via bimobject.com as part of the 2020 FOCUS digital transformation program. The company reports a sub-1% failure rate across its installed base and positions its portfolio around 'Solutions éconologiques™', a Total Cost of Ownership framing.

Calidar sells through a horizontal B2B channel covering four personas: prescribers (architects, engineering bureaus, consultants), distributors, installers, and maintenance/service providers. The GTM motion is channel-led (specialized ventilation distribution network across France, Netherlands, UK, and Germany), supported by direct technical and commercial staff, paper catalogs, and digital tools, with no direct-to-consumer or SaaS pricing. Revenue and pricing are not publicly disclosed.

Name

Calidar

Legal name

ZEHNDER CALADAIR INTERNATIONAL

Website

https://caladair.com

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

51–100 employees

Short description

Calidar (ZEHNDER CALADAIR INTERNATIONAL) is a French industrial ventilation manufacturer, founded 1979 and headquartered in Mâcon, serving commercial and tertiary buildings across Western Europe with decentralized (EVERSKY™) and centralized (Simple Flux, Double Flux) ventilation, fire-safety smoke extraction, and the patented CLEARMOTION™ air/surface decontamination program, sold via specialized distributors to prescribers, installers, and maintenance providers.

Ownership category

akta.pro rank

Product category

Ventilation Equipment and Indoor Air Quality Solutions

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

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

akta.pro primary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

akta.pro secondary industries

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE), Ventilation System Installation (Exhaust Fans, ERV/HRV, Make-Up Air) (HSAOAGAI), Dampers, Louvers & Ventilation Controls (IMADANAD)

Keywords

• Ventilation equipment
• Indoor air quality
• HVAC systems
• Air handling units
• Decentralized ventilation

Headquarters

HQ city

Mâcon

HQ country

France

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Distribution channels1 record

Marketing channels4 records

Core offering

Caladar manufactures and sells ventilation, air treatment, and climatic comfort equipment and solutions for buildings and facilities. Its portfolio spans decentralized ventilation systems (EVERSKY), single-flow (Simple Flux) and double-flow with heat recovery (Double Flux) systems, fire safety ventilation units, air handling units, smoke extraction systems, and air purification technology (CLEARMOTION). The company supports these products with digital tools for sizing and BIM modeling.

Product overview

Caladair is a ventilation and indoor air quality solutions company offering a comprehensive product portfolio under the EVERSKY™ and PLUG & PLAY SET & FORGET™ brands. The core offering includes three main ventilation categories: Simple Flux (single-flow), Double Flux (double-flow with heat recovery), and Fire Safety systems. Supporting the core ventilation products are a range of specialized units including Econizer™ C4 extraction units, MinimAx™ extra-flat units, CombiBox Concept™ modular central units, BLUETECH™ air handling units, air purifiers, and smoke extraction solutions (PyroStar™, Diablo™, Reflex™). The company also provides software tools including Softwair™ for system sizing and BIMGO™ for BIM modeling, along with regulation cabinets and relay boxes for complete system control.

Differentiator

Problem solved

Functional benefit

Brands

• EVERSKY™: High-efficiency, high indoor air quality decentralized ventilation solution covered by 4 patents.
• PLUG & PLAY SET & FORGET™
• CLEARMOTION™
• BLUETECH™
• Solutions éconologiques™

Products and services

• EVERSKY™ High-efficiency, high Indoor Air Quality decentralized ventilation solution covered by 4 patents, targeting building professionals and end users needing flexible, decentralized air treatment.
• Simple Flux ventilation category Essential single-flow ventilation category for basic air exchange in buildings and facilities, targeted at professional installers and specifiers.
• Double Flux ventilation category Performance and energy-comfort double-flow ventilation category with heat recovery, targeted at professional installers and specifiers.
• Sécurité Incendie (Fire Safety) ventilation category Safety and occupant protection fire safety ventilation category, including smoke extraction systems, for buildings and facilities.
• Econizer™ C4 Extraction Unit Certified safety and performance low-consumption C4 extraction unit for ventilation applications.
• MinimAx™ Extra-Flat Ventilation Unit Performance and adaptability extra-flat ventilation unit for installations with space constraints.
• CombiBox Concept™ Modular Central Unit Efficiency and comfort double-skin modular central ventilation unit.
• BLUETECH™ Air Handling Unit (Eventys™ heating air treatment module) Performance and advanced regulation air treatment central unit (air handling unit) with intelligent control.
• Kit Multizone™ Flow Modulation air purifiers Air quality and safety air purifiers for multi-zone ventilation applications.
• AquaPack™ Regulation Cabinet Intelligent control and performance regulation system cabinet for ventilation installations.
• PyroStar™ F400-120 Smoke Extraction Unit (Belt Drive) Reliability and safety smoke extraction unit with belt drive for fire emergency applications.
• Diablo™ F400-120 Direct Transmission Smoke Extraction Unit Performance and safety smoke extraction unit with direct transmission for fire emergency applications.
• Reflex™ F400-120 Smoke Extraction Towers Protection and efficiency smoke extraction towers for fire safety applications.
• CDF Relay Box Centralized control and safety relay box for fire safety and ventilation systems.
• CLEARMOTION™ air and surface decontamination program Patented air quality improvement program for continuous decontamination of ambient air and surfaces, tested per EN 17272:2020, targeting premises with indoor air quality and health concerns.
• Softwair™ sizing application Sizing and selection software application enabling ventilation system selections based on technical, regulatory, economic and ecological criteria, for prescribers and installers.
• BIMGO™ BIM library BIM library providing REVIT or IFC objects for digital modeling of Caladar ventilation products, accessible via the Bimobject portal for prescribers.

Quantifiable outcome

• Failure rate under 1%

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Recent moves3 records

Expansion highlights4 records

Direct peers

• Aldes: Aldes is a major French specialist in residential and commercial ventilation, indoor air quality and heat recovery — directly comparable to Caladair in product scope (single/double flux, AHUs, IAQ solutions), customer base (prescribers, installers, distributors) and French/European market focus.
• France Air: France Air is a French-headquartered ventilation and air-handling manufacturer with a comparable product mix (fans, AHUs, smoke extraction, IAQ) and similar distribution through installers and wholesalers — making it one of the closest head-to-head competitors for Caladair in France.
• Swegon: Swegon is a Swedish indoor climate specialist offering AHUs, chillers, beams and ventilation products — closely comparable to Caladair in targeting energy-efficient, high-IAQ commercial ventilation across European markets, though operating at substantially greater scale.
• Helios Ventilatoren: Helios is a German family-owned ventilation manufacturer with overlapping offerings in fans, decentralized ventilation and IAQ — competing directly with Caladair in the German-speaking and broader European market, with a similar mid-sized profile.
• Vents Group: Vents is a Ukrainian-headquartered global ventilation manufacturer producing fans, AHUs and heat recovery units — competing with Caladair in single/double flux and energy-recovery ventilation across European distribution channels at typically lower price points.

Broad incumbents

• Systemair: Systemair is a listed Swedish HVAC manufacturer with a pan-European and global footprint in fans, AHUs and air distribution — overlapping with Caladair's ventilation portfolio but at much greater scale (~6,500 employees) and broader geographic reach.
• TROX Group: TROX is a German global leader in ventilation components, air handling units and fire/smoke dampers — directly competing with Caladair in the AHU, smoke extraction and ventilation controls space at significantly larger scale and broader international presence.
• Zehnder Group AG: Zehnder Group AG is the Swiss-listed parent company of Caladair and a major European indoor climate specialist (EUR 501.7M ventilation sales in 2025) — relevant as the strategic owner whose broader portfolio and channel decisions shape Caladair's trajectory.

Emerging players

• Sauter Régulation: Sauter Régulation is a French building automation and HVAC controls specialist — overlapping with Caladair's AquaPack regulation cabinets and Kit Multizone flow modulation products in the controls/smart-building layer.

Regional players

• Vent-Axia: Vent-Axia is a UK-based ventilation and IAQ manufacturer serving primarily the British and Irish markets — comparable to Caladair in decentralized and residential ventilation offerings but operating in a different geography through overlapping Zehnder channels.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/caladair-international
• Instagraminstagram.com/caladair_international/?hl=fr

Revenue estimate

Valuation estimate

Number of profiles

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 Calidar