What Klingenburg does

Klingenburg is a European manufacturer of heat and moisture recovery components for ventilation and air handling systems, founded in 1979 and headquartered in Gladbeck, Germany, with a regional headquarters in Świdnica, Poland. Its portfolio centers on rotary heat exchangers (regenerative, up to 80% efficiency) and plate heat exchangers (recuperative, up to 90% efficiency), manufactured in aluminum with proprietary variants including the DekaTru® zeolite-coated HUgo sorption rotor, which enables both sensible and latent heat transfer. Complementary products include CERTO high-pressure humidifiers for indirect adiabatic cooling, DEC desiccant evaporative cooling systems, and UV-C disinfection modules (Home, High Flow, Industrial variants). Recent platform introductions — Rotor 5.0 (2017), RRU ECO (2022), and GS30-TOP (2023) — reflect ongoing efficiency and form-factor optimization, with selection software certified by EUROVENT, TÜV SÜD, and AHRI supporting customer engineering integration.

Klingenburg sells primarily through a B2B technical-consulting model: in-house specialists consult with HVAC engineers, building designers, and facility managers to size and specify heat recovery solutions, supported by proprietary selection software offered as standalone programs or DLL modules for integration into customer workflows. Revenue streams span product sales (rotors, plate exchangers, humidifiers, UV-C modules), aftermarket service and spare parts, and software licensing. End markets include commercial and industrial buildings, industrial processes (paint shops, pharma, paper, ceramics, waste incineration), data centers, marine and expedition vessels, and healthcare facilities. The company is present directly in Germany, Poland, the UK, Spain, and the USA, with additional international service partners.

Since September 2, 2022, Klingenburg has operated as a wholly owned subsidiary of CAREL Industries S.p.A., the publicly listed Italian HVAC/R controls specialist. The acquisition provides Klingenburg with access to CAREL's global footprint (notably North America), accelerated R&D investment capacity, and cross-selling opportunities. The European leadership team includes CEOs at the Germany and Poland entities (Rolf F. Oberhaus, Sławomir Bielak, Thomas Hartkämper) plus regional general managers (e.g., Jorge Cuevas Martín for Iberica) and a dedicated R&D function that has driven the company's product roadmap.

Name

Klingenburg

Legal name

Klingenburg International Sp. z o.o.

Website

https://klingenburg.pl

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

251–500 employees

Short description

Klingenburg manufactures rotary and plate heat exchangers for heat and moisture recovery in HVAC systems, serving commercial buildings, industrial processes, data centers, and marine applications across Europe and North America. Founded 1979, it has operated as a CAREL Industries subsidiary since September 2022.

Ownership category

akta.pro rank

Product category

Industrial Heat Recovery and Ventilation Equipment

NAICS

Power Boiler and Heat Exchanger Manufacturing (33241), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC)

akta.pro secondary industries

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Waste Heat Recovery & Heat Integration (HRSG/ORC, Pinch Analysis, Heat Exchangers) (EUABAJAF)

Keywords

• Energy recovery ventilation
• Rotary heat exchangers
• Plate heat exchangers
• HVAC humidity control
• Air-to-air heat recovery

Headquarters

HQ city

Swidnica

HQ country

Poland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Exchanger Products: Manufacture and sale of rotary and plate heat exchangers for HVAC and industrial applications. Products include standard rotors, sorption rotors (HUgo), counter-flow plate exchangers, and cross-flow plate exchangers. Revenue generated from product sales to commercial and industrial customers.
2. Technical Consulting and Design Services: Individual planning and design services for heat and moisture recovery systems. Technical specialists provide consultation for optimal system sizing and configuration to maximize amortization.
3. Selection Software: Proprietary selection software offered as standalone programs or DLL modules for customer integration. Based on in-house research results verified by TÜV Süd and certified by EUROVENT and AHRI.
4. Aftermarket Services and Spare Parts: Service care including technical support, commissioning, maintenance, periodic inspections, repairs, modernization, parts distribution, service contracts, and training. Original spare parts supplied directly from manufacturer.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Klingenburg manufactures rotary and plate heat exchangers that recover up to 80–90% of sensible and latent heat from exhaust air streams in commercial and industrial ventilation systems. The portfolio extends to sorption rotors with proprietary DekaTru® zeolite coating (HUgo), CERTO high-pressure humidifiers, UV-C air disinfection modules, and engineered adiabatic/DEC cooling systems, all backed by TÜV SÜD/EUROVENT/AHRI-certified selection software and direct technical consulting for project sizing and commissioning.

Product overview

Klingenburg is a European leader in heat and moisture recovery systems for ventilation, with a comprehensive portfolio centered on rotary heat exchangers and complementary technologies. Core products include rotary heat exchangers (available as condensing, hygroscopic, epoxy-coated, and sorption variants using DekaTru® zeolite coating), counterflow and cross-flow plate heat exchangers (GS series and PWT series), and CERTO high-pressure humidifiers. The product ecosystem extends to UV-C air disinfection modules (Home, High Flow, Industrial variants), adiabatic cooling solutions, and DEC (Desiccative Evaporative Cooling) systems. Recent innovations include the RRU ECO compact rotary unit and Rotor 5.0 technology featuring optimized fin geometry. Products serve diverse applications including HVAC in residential/commercial buildings, industrial processes, paint booths, data centers, cruise ships, and healthcare facilities. The company was acquired by CAREL Industries in September 2022.

Differentiator

Problem solved

Functional benefit

Brands

• DekaTru®: Proprietary zeolite coating technology used on sorption rotors (HUgo) for enhanced moisture transfer and durability
• HUgo
• CERTO

Products and services

• Rotary Heat Exchangers (Obrotowe wymienniki ciepła) Aluminum rotary heat exchangers for heat and moisture recovery in HVAC ventilation systems, achieving up to 80% efficiency and available in diameters up to 8 m for large air volumes.
• HUgo Sorption Rotor with DekaTru® Sorptive rotary heat exchanger coated with proprietary DekaTru® zeolite technology (300 nm particles) for combined sensible and latent (moisture) heat recovery, with 15+ year lifespan and resistance to high-pressure water cleaning.
• Rotors for Paint Shops (Wirniki do lakierni)
• Rotors for Data Centers (Wirniki do centrów komputerowych)
• RRU ECO Rotary Heat Exchanger Compact rotary heat exchanger line based on Rotor 5.0 geometry with only 290 mm depth, brush sealing on the external rotor shell, adjustable purging chamber, and an integrated Modbus stepper motor drive; meets ErP2018 requirements.
• Cross-Flow Plate Heat Exchangers (Krzyżowe płytowe wymienniki ciepła)
• High-Temperature Plate Heat Exchanger (up to 300°C)
• GS Series Counterflow Plate Heat Exchangers
• GS30-Top Counter-Flow Plate Heat Exchanger High-efficiency counter-flow plate heat exchanger variant achieving 85.5% heat recovery efficiency at 400 m³/h airflow, 4 percentage points above the base GS30, meeting H1 heat recovery class.
• CERTO High-Pressure Humidifier
• UV-C Disinfection Modules
• Adiabatic Cooling Systems
• DEC – Desiccant Evaporative Cooling Systems
• Aftermarket Service and Spare Parts

Quantifiable outcome

• Up to 80% heat and moisture recovery efficiency in rotary exchangers
• +6 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Alfa Laval: Global industrial equipment leader with a substantial plate heat exchanger business serving HVAC, refrigeration, and industrial process applications. Alfa Laval competes directly with Klingenburg's GS counter-flow and cross-flow plate exchangers but at meaningfully larger scale and broader geographic reach.
• Kelvion: German-based heat exchanger manufacturer (formerly GEA Heat Exchangers) producing plate, shell-and-tube, and air-cooled heat exchangers for HVAC and industrial markets. Kelvion competes most directly with Klingenburg in industrial plate heat exchangers and high-temperature applications across Europe.
• VTS Group: Polish-headquartered AHU and ventilation equipment manufacturer with strong Central European presence. VTS competes in AHUs with integrated heat recovery — directly adjacent to Klingenburg's product positioning — particularly in Polish, German, and Eastern European markets.
• Hoval: Liechtenstein-based heating, ventilation, and heat recovery system manufacturer. Hoval offers integrated HVAC solutions that incorporate heat recovery technology competing with Klingenburg's products in commercial and institutional buildings across Central Europe.
• FläktGroup: European air handling unit (AHU) manufacturer that integrates rotary and plate heat exchangers into its air handling systems. FläktGroup competes both as a buyer of heat exchangers (where it overlaps with Klingenburg's customer base) and as a systems competitor offering integrated energy recovery solutions.
• Sondex (Danfoss): Plate heat exchanger manufacturer owned by Danfoss, serving HVAC, district heating, and industrial applications. Sondex competes with Klingenburg's industrial plate heat exchanger offering, particularly in European district energy and process applications.
• Munters: Swedish-headquartered global leader in air-to-air energy recovery, dehumidification, and humidity control. Munters' rotary heat exchangers and sorption rotors are the most direct competition to Klingenburg's core product line, with similar applications in commercial HVAC, data centers, and industrial processes.
• SWEP (Atlas Copco): Brazed plate heat exchanger specialist now part of Atlas Copco's Power Technique division. SWEP competes in HVAC/refrigeration plate heat exchangers with similar efficiency claims to Klingenburg's GS series, with a strong global OEM channel.

Regional players

• RenewAire: US-based manufacturer of energy recovery ventilators (ERVs) primarily serving North American commercial and residential markets. RenewAire represents the regional competitive analogue in North America — relevant as Klingenburg executes its CAREL-enabled US expansion.

Broad incumbents

• Systemair: Swedish ventilation and AHU manufacturer with a broad product portfolio including heat recovery-equipped air handling units. Systemair is both a potential customer for Klingenburg's rotary exchangers and a competing systems provider in European commercial ventilation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

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 Klingenburg