Calorplast Heat Technology

What Calorplast Heat Technology does

Calorplast Wärmetechnik GmbH is a privately-held German manufacturer of plastic (PE, PP, PVDF, PFA) heat exchangers, headquartered in Krefeld, Germany, with approximately 40+ years of operating history. Its seven product lines — bath/immersion, biogas, gas-liquid (including the Evolution Series), shell-and-tube, tube-plate, and Vanadium Redox Flow Battery heat exchangers — are engineered for corrosive, high-purity, or aggressive-media applications in chemical processing, semiconductor manufacturing, galvanic surface treatment, biogas drying, wastewater treatment, ventilation/gas handling, aquaculture, and energy storage. Each unit is custom-designed via computer-aided simulation against customer-specific process parameters and manufactured using a patented modular technology that joins thin-walled plastic tubes into high-surface-density modules.

The company operates a sales-led, engineering-consultative go-to-market model. Customers submit detailed project inquiries (quantity, budget, decision timeline) through multilingual website forms (German, English, Italian), and engineers support specification and dimensioning. Revenue is generated via quote-based hardware sales of custom units; pricing is not publicly disclosed. Distribution combines direct sales from Krefeld with a global channel of 13 regional partners across EMEA, the Americas, and Asia-Pacific, plus a wholly-owned North American subsidiary (Calorplast USA, Milford, Ohio) established in 2023. The company is managed by Dirk Kullwitz as Managing Director, has no external investors, no disclosed funding rounds, and no public revenue figures.

Name

Calorplast Heat Technology

Legal name

CALORPLAST Wärmetechnik GmbH

Website

https://calorplast-waermetechnik.de

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

Calorplast Wärmetechnik GmbH is a German manufacturer of custom-engineered plastic heat exchangers (PE, PP, PVDF, PFA) serving chemical, semiconductor, biogas, galvanics, energy storage, wastewater, and ventilation customers worldwide through direct sales and a global partner network.

Ownership category

akta.pro rank

Product category

Industrial Plastic Heat Exchangers

NAICS

Power Boiler and Heat Exchanger Manufacturing (33241)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC)

Keywords

• Plastic heat exchangers
• Corrosion-resistant heat transfer
• Industrial heat recovery
• Shell-and-tube heat exchangers
• Biogas cooling equipment

Headquarters

HQ city

Krefeld

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Heat Exchanger Sales: Calorplast generates revenue through the sale of custom-engineered plastic heat exchangers. Each unit is designed and manufactured to customer specifications based on computer simulation. The company offers product inquiry forms requiring detailed project specifications including quantity, budget, and decision timeline.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Calorplast develops and manufactures custom plastic heat exchangers (immersion, biogas, gas-liquid, shell-and-tube, tube-plate, and Vanadium Redox Flow battery types) from corrosion-resistant technical plastics using a patented modular tube technology. Each unit is engineered through computer-aided simulation to customer-specific process parameters for heating, cooling, condensing, or heat recovery of aggressive and high-purity media.

Product overview

CALORPLAST Wärmetechnik GmbH is a German manufacturer of plastic heat exchangers with over 40 years of experience. The product portfolio consists of seven distinct heat exchanger product lines: Bad-Wärmetauscher (Immersion/Bath Heat Exchangers) for heating and cooling aggressive liquids in process tanks; Biogas-Wärmetauscher for biogas drying and cooling; Gas-Wasser-Wärmetauscher (Gas-Liquid Heat Exchangers) for treating aggressive gas streams; the Evolution Series as the latest-generation advancement of the gas-liquid product line; Rohrbündel-Wärmetauscher (Shell and Tube Heat Exchangers) for pure media applications; Rohrplatten-Wärmetauscher (Tube Plate Heat Exchangers) combining plate and tube technologies; and Vanadium Redox Flow Battery Heat Exchangers for energy storage applications. All products are manufactured entirely from corrosion-resistant technical plastics (PE, PP, PVDF, PFA) using a proprietary patented technology that packs large heat transfer surfaces into compact volumes.

Differentiator

Problem solved

Functional benefit

Products and services

• Bad-Wärmetauscher (Immersion / Bath Heat Exchanger) Plastic bath heat exchangers for heating or cooling highly concentrated inorganic acids, high-purity media, and aggressive liquids directly inside process tanks. Constructed from thin-walled plastic tubes joined via CALORPLAST's patented process into a compact immersion module, designed for chemical industry and research buyers needing complete corrosion resistance without metal-ion contamination.
• Biogas-Wärmetauscher (Biogas Heat Exchanger) Plastic heat exchangers constructed entirely from corrosion-resistant polyethylene (PE) for condensing and drying biogas from biomass fermentation. Resistant to aggressive biogas components such as hydrogen sulfide, and scaled for biogas volumes up to approximately 1,000 m³/h, serving biogas plant operators needing maintenance-light heat exchange in corrosive gas streams.
• Gas-Wasser-Wärmetauscher (Gas-Liquid Heat Exchanger) Plastic gas-water (gas-liquid) heat exchangers made from corrosion-resistant technical plastics (PE RT/HD, PP, PVDF) using the patented CALORPLAST modular technology. Designed for heating, cooling, and heat recovery from aggressive gas streams, with capacity ranging from hundreds to 80,000 m³/h of gas volume for chemical, ventilation, and gas treatment applications.
• Gas-Wasser-Wärmetauscher – Evolution Series Advanced next-generation gas-liquid heat exchangers representing CALORPLAST's latest iteration of its gas-water product line. Features modular construction for scalable capacity and performance, improved thermal efficiency in a reduced space envelope, and compliance with ErP 2018 efficiency requirements, while retaining the corrosion-resistant plastic construction for aggressive gas streams.
• Rohrbündel-Wärmetauscher (Shell and Tube Heat Exchanger) External plastic shell-and-tube heat exchangers constructed from thin-walled tube bundles in fully corrosion-resistant technical plastics, designed for efficient heating, cooling, and condensing of pure and ultra-pure media in a compact footprint. Targeted at high-purity chemical and semiconductor processes where metal contamination must be eliminated.
• Rohrplatten-Wärmetauscher (Tube Plate Heat Exchanger) External plastic tube-plate heat exchangers that combine properties of conventional plate heat exchangers with CALORPLAST's modular technology. Built with a unique modular design welded into a double-walled plastic pressure vessel for efficient heating or cooling of low-viscosity media in corrosive service.
• Wärmetauscher – Vanadium Redox Flow (VRFB Heat Exchanger) Plastic heat exchangers purpose-built for efficient temperature control of vanadium electrolyte solutions in Vanadium Redox Flow Battery (VRFB) energy storage systems. The highly adaptable modular concept allows direct integration of immersion heat exchangers into electrolyte storage tanks, supporting energy storage integrators who need corrosion-resistant thermal management at scale.

Quantifiable outcome

• Heat exchangers can achieve comparable performance to metallic alternatives in comparable installation space

Segments8 records

Ideal customer profiles7 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

14 partnerships are on record, tiered regional and core.

• SIMETSregionalChannel Partner/ Reseller/ DistributorSIMETS is the exclusive channel partner for France, providing local sales and support for CALORPLAST products in the French market. Located at ZAC des Garennes, 5 rue Chappe, 78130 Les Mureaux.
• S&RIND S.r.l.regionalChannel Partner/ Reseller/ DistributorS&RIND S.r.l. serves as the channel partner for Italy, offering local representation and support for CALORPLAST heat exchangers. Located in Settimo Milanese, Italy.
• Nowy Plan-Tech Sp. z o.o.regionalChannel Partner/ Reseller/ DistributorNowy Plan-Tech is the Polish channel partner for CALORPLAST products. Located at ul. Lodowa 120, 93-232 Łódź, Poland.
• Soluciones GalvanicasregionalChannel Partner/ Reseller/ DistributorSoluciones Galvanicas represents CALORPLAST in Spain, providing local sales and technical support. Located at Carrer del Dr. Peris, 215, 46185 La Pobla de Vallbona, Valencia.
• Chemical Process Solutions Ltd.regionalChannel Partner/ Reseller/ DistributorChemical Process Solutions Ltd. is the UK channel partner for CALORPLAST. Located at Unit 4, Chevychase Court, Seaham Grange Ind. Est.
• ThermoPark Endüstriyel Isı Sistemleri Sanayi ve Ticaret A.Ş.regionalChannel Partner/ Reseller/ DistributorThermoPark is the Turkish channel partner for CALORPLAST heat exchangers. Located at Akfırat 4.Cad. 26.Sk No.22, TR-34959 Tuzla, İstanbul.
• Calorplast USAcoreChannel Partner/ Reseller/ DistributorCalorplast USA is the company's own subsidiary serving the North American market. Located at 1287 US Highway 50, Milford OH 45150, USA. Phone: +1 513-562-7717, Website: www.calorplastusa.com
• Shandong HUGE Heat Exchange Technology Co., Ltd.regionalChannel Partner/ Reseller/ DistributorShandong HUGE Heat Exchange Technology Co., Ltd. serves as the China channel partner for CALORPLAST. Located at No. 22 Fuxing Road, Xincheng Industrial Park, Shizhong District, Jinan City, Shandong, China.
• PT. TRI MEGAH TEHNIKregionalChannel Partner/ Reseller/ DistributorPT. TRI MEGAH TEHNIK is the Indonesian channel partner for CALORPLAST products. Located at Citra Garden City Aeroworld 8, Blok L3/26 Jakarta Barat, Indonesia.
• Kansetsu Sangyo Co., Ltd.regionalChannel Partner/ Reseller/ DistributorKansetsu Sangyo Co., Ltd. is the Japanese channel partner for CALORPLAST. Located at 4-3-27 Shimaya, Konohana-ku, Osaka 554-0024, Japan.
• UniFlo Kazakhstan LLPregionalChannel Partner/ Reseller/ DistributorUniFlo Kazakhstan LLP serves as the Kazakhstan channel partner for CALORPLAST products. Located at office 33, Stasova Street 102, Almaty, Kazakhstan.
• Seru International Ltd.regionalChannel Partner/ Reseller/ DistributorSeru International Ltd. is the Taiwan channel partner for CALORPLAST. Located at 6F, No.201, Sec.2, Heping East Road, Taipei 10664, Taiwan.
• RAK Engineering Co., Ltd.regionalChannel Partner/ Reseller/ DistributorRAK Engineering Co., Ltd. is the Thai channel partner for CALORPLAST products. Located at 72/1 Sukhumvit 117 Rd., T.Bangmuangmai, Muang Samutprakarn, Thailand.
• Protherm SystemsregionalChannel Partner/ Reseller/ DistributorProtherm Systems is the South African channel partner for CALORPLAST. Located at No. 8, 4th Street, Wynberg, Gauteng, South Africa, 2090.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• Kelvion: Specialist manufacturer of industrial heat exchangers (plate, shell-and-tube, brazed) with strong presence in chemical, petrochemical, and energy markets. Closely comparable product category and customer base to Calorplast, though Kelvion's portfolio is primarily metallic rather than plastic.
• API Heat Transfer: US-based manufacturer of shell-and-tube, plate, and air-cooled heat exchangers for chemical, petrochemical, and HVAC markets. Directly comparable custom-engineered industrial heat exchanger model targeting process industries similar to Calorplast's core chemical and surface technology segments.
• Funke Wärmeaustauscher Apparatebau: German specialist in plate heat exchangers and spiral heat exchangers for chemical, petrochemical, and energy applications. Shares Calorplast's German Mittelstand industrial DNA and serves overlapping chemical and process industry customers with custom-engineered thermal solutions.
• Barriquand Technologies Thermiques: French manufacturer of plate, tubular, and spiral heat exchangers, including a notable focus on corrosion-resistant designs for chemical and metallurgy customers. Comparable niche expertise in aggressive-media applications and overlaps with Calorplast's chemical industry segment.
• Sondex (Danfoss): Danish plate heat exchanger manufacturer (acquired by Danfoss) producing gasketed, brazed, and welded plate designs for HVAC, district heating, and industrial process applications. Comparable in custom-engineered heat exchanger manufacturing and process industry customer overlap.

Broad incumbents

• GEA Group: German-headquartered industrial equipment group with a large heat exchanger and thermal separation division serving chemical, food, dairy, and energy customers. Competes with Calorplast in industrial process heat exchange but as one business within a diversified portfolio.
• SWEP (Dover Corporation): World's largest supplier of brazed plate heat exchangers, part of Dover's Engineered Products segment, serving HVAC, refrigeration, and district energy. Competes with Calorplast in the gas-liquid and ventilation technology segments, though focused on brazed metal plates rather than plastics.
• Alfa Laval: Swedish global leader in heat transfer, separation, and fluid handling, with a broad plate, shell-and-tube, and welded heat exchanger portfolio serving chemical, energy, and process industries. Overlaps with Calorplast in industrial heat exchangers but operates at vastly greater scale across many product categories.
• Xylem (Bell & Gossett): Global water technology company whose Bell & Gossett and similar brands manufacture heat exchangers, pumps, and hydronic systems for HVAC and industrial markets. Overlaps with Calorplast in industrial heat transfer, though Xylem is primarily a water and pumps platform with heat exchange as a supporting line.

Regional players

• Hisaka Works: Japanese specialist manufacturer of plate and spiral heat exchangers for chemical, petrochemical, and food industries with strong APAC presence. Comparable in custom-engineered process heat exchanger focus, though primarily serving the Japanese and broader Asian market.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Calorplast Heat Technology