What Stiebel Eltron does

Stiebel Eltron is a privately held German family-owned manufacturer of building services and green tech products, founded in 1924 by Dr. Theodor Stiebel in Berlin and headquartered in Holzminden. The company designs, produces, and distributes heat pumps (air-source, geothermal, groundwater), mechanical ventilation systems with heat recovery, electric instantaneous and storage water heaters, hot water heat pumps, electric and storage heaters, and drinking water filtration systems. Its product portfolio is underpinned by proprietary electronic control technologies (4i, 3i, and 2i) that use combinations of temperature and flow sensors with motorised valves for precise closed-loop temperature delivery, alongside reversible heat pump cycles enabling combined heating and cooling. The company operates four international production facilities in Germany, China (Tianjin), and Thailand (Ayutthaya), supported by 26 wholly-owned subsidiaries and a certified trade partner network (SHK Fachpartner) spanning more than 120 countries with over 6,000 employees globally.

The company's revenue model is primarily hardware sales of building technology products, supplemented by professional services delivered through a digital Toolbox ecosystem that includes the Navigator system selection platform, sizing tools (Wärmepumpentool, Lüftungstool, Hydraulikfinder), subsidy calculators (Förderung, JAZ), and Materialliste documentation tools for trade partners, planners, and architects. Pricing is quote-based rather than publicly disclosed and is transacted through certified installers, wholesale distributors, and direct regional sales offices; multi-year contracts and post-installation service registration create recurring touchpoints with end users. Customer segments span residential homeowners (single-family and multi-family), commercial buildings (offices, schools, childcare facilities, restaurants), and a B2B professional channel of plumbers, heating installers, and engineering specifiers. The Solarwatt partnership extends the offering into integrated photovoltaic and heat pump energy management systems, positioning the company within the European heat transition and building decarbonization value chain.

Name

Stiebel Eltron

Legal name

STIEBEL ELTRON GmbH & Co. KG

Website

https://stiebel-eltron.com

Company type

Private

Founded year

1924

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Stiebel Eltron is a 100-year-old German family-owned manufacturer of heat pumps, ventilation systems, domestic hot water products, and water filtration, serving residential and commercial customers in 120+ countries through 26 subsidiaries and a certified trade partner network.

Ownership category

akta.pro rank

Product category

Heat Pumps & Water Heating

NAICS

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), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH)

akta.pro secondary industries

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Commercial Water Heater & Boiler Service (HSAOACAJ), Expansion Tank, Circulator Pump & Zone Valve Service (HSAOACAG)

Keywords

• Heat pump manufacturing
• Building services technology
• Domestic hot water
• Mechanical ventilation systems
• HVAC equipment

Headquarters

HQ city

Holzminden

HQ country

Germany

HQ region

Europe

Offices24 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Pump Sales: Sale of heat pumps for residential and commercial building heating, cooling, and DHW applications. Products include air-source, ground-source, and groundwater heat pumps along with system components and cylinders.
2. Domestic Hot Water Products: Sale of instantaneous water heaters (compact and comfort classes), small water heaters, wall and floor mounted cylinders, hot water heat pumps, taps, and hand dryers.
3. Ventilation Systems: Sale of central and decentralised ventilation systems with heat recovery for residential and commercial buildings, including integral units combining heating, ventilation, cooling, and DHW functions.
4. Professional Tools and Services: Professional partner tools including Navigator system selection, Wärmepumpentool sizing, Hydraulikfinder, Lüftungstool, Materialliste, and training services for trade partners, planners, and architects.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels9 records

Core offering

Stiebel Eltron manufactures and supplies energy-efficient building services equipment, including air-source, geothermal, and groundwater heat pumps for heating, cooling, and domestic hot water; mechanical ventilation systems with heat recovery; instantaneous and storage water heaters; and drinking water filtration systems. The portfolio also includes system cylinders, energy management controls, and a professional planning-tool ecosystem (Navigator, Toolbox, sizing and subsidy calculators) used by trade partners, planners, and architects to specify complete system solutions for residential and commercial new-build and modernisation projects.

Product overview

STIEBEL ELTRON is a German building technology manufacturer offering a comprehensive portfolio of energy-efficient products organised into four main product categories: Renewables (heat pumps and ventilation), Domestic Hot Water (DHW), Room Heating, and Water Filtration. The Renewables category is anchored by heat pumps (air source, geothermal, groundwater) and ventilation systems (central, decentralised, integral), supported by system cylinders and energy management controllers. The DHW range spans instantaneous water heaters (DHE with 4i technology, DHB-E LCD with 3i technology, and compact DCE-X Premium), hot water heat pumps (including the award-winning WWK 300 Plus), small storage water heaters, taps, and hand dryers. Room Heating includes electric heaters and storage heaters with associated control units. The portfolio is complemented by drinking water filtration systems. The professional tools ecosystem — centred on the Navigator platform and Toolbox — enables trade partners, planners, and architects to select, size, and document complete system solutions integrating heat pumps, storage, ventilation, photovoltaic (via Solarwatt partnership), and subsidy calculations. These tools collectively represent the company's differentiated go-to-market approach for the professional channel.

Differentiator

Problem solved

Functional benefit

Products and services

• Heat Pumps Air source, geothermal (ground source), and groundwater heat pumps for space heating, cooling, and domestic hot water generation. Used in new builds and modernisation/retrofit projects across residential and commercial buildings.
• Ventilation Systems
• System Cylinders
• Control Units / Energy Management Controllers and energy management systems for heat pumps and ventilation, enabling system monitoring, optimisation, and integration of PV/solar components.
• Instantaneous Water Heaters Electric instantaneous water heaters available in fully electronic (DHE with 4i technology), electronically controlled (DHB-E LCD with 3i technology), and compact (DCE-X Premium with 4i technology) variants. Provide on-demand hot water at precise temperatures for kitchen, bathroom, and commercial applications.
• Hot Water Heat Pumps (DHW Heat Pumps) Heat pump water heaters for domestic hot water generation, using ambient air or exhaust air as heat source. Gateway product to renewable home technology.
• Small Water Heaters and Wall/Floor Mounted Cylinders Compact storage water heaters for point-of-use or small-scale hot water demand in residential and commercial settings, including wall and floor mounted cylinders.
• Electric Heaters Electric room heaters for direct and supplemental heating in residential and commercial spaces.
• Storage Heaters Night storage heaters and associated control units for off-peak electric heating.
• Drinking Water Filter Water filtration systems and replacement cartridges for drinking water purification, including whole-house and point-of-use filters.
• Taps Taps and faucet accessories complementing the domestic hot water product range.
• Hand Dryers Electric hand dryers for commercial and residential washroom applications.
• Navigator (System Planning Tool) Professional planning tool for system selection of heat pumps, ventilation units, and hot water systems. Guides users through building type, insulation standard, location/climate zone, energy source, and function selection to recommend complete system solutions including components, energy costs, CO2 savings, subsidies, and documentation.
• Toolbox (Professional Partner Platform) Professional applications platform for trade partners, builders, planners, and architects. Includes project management, service order handling, product searches, training scheduling, partner locator, and access to all planning and engineering tools.
• Wärmepumpentool (Heat Pump Sizing Tool) Professional heat pump sizing tool for selecting heating heat pumps and integral ventilation units. Offers quick selection by building size and detailed calculation including heat/energy quantities and energy costs.
• Lüftungstool (Ventilation Planning Tool) Planning tool for ventilation systems. Covers building and ventilation system selection, heat recovery calculations, room-by-room airflow design, duct routing, filter selection, and schematics.
• Hydraulikfinder (Hydraulic Reference Tool) Reference tool for browsing and retrieving hydraulic and electrical plans for Stiebel Eltron heat pump systems. Covers air/water, ventilation integral, geothermal, and groundwater heat pumps with various buffer and hot water storage configurations.
• Materialliste (Material List Tool) Digital material list tool for generating component lists for heat pump sets, apartment stations, and ventilation systems, including technical details, energy labels, hydraulic plans, data sheets, and dimension drawings.
• Jahresarbeitszahl (Annual Performance Factor Calculator) Calculator tool for determining the annual performance factor (JAZ) of heat pump systems according to VDI 4650 methodology, used for subsidy applications and regulatory compliance.
• Förderung (Subsidy/Funding Calculator) Tool for calculating available German government subsidies (BEG - Bundesförderung für effiziente Gebäude) for heat pump installations, including base funding, climate speed bonus, income bonus, and efficiency bonus calculations.
• Schullüftung (School Ventilation Planning Tool) Specialised ventilation planning tool for schools and childcare facilities, dimensioning ventilation systems per DIN EN 16798 and VDI 6040-2 standards based on occupancy, room size, and air quality requirements.
• Partner Finder / Certified Installer Locator Online tool enabling customers to locate local STIEBEL ELTRON certified SHK (plumbing and heating) trade partners for consultation, quotation, installation, and after-sales service. Accessible via Google Maps integration.

Quantifiable outcome

• 64% CO2 emissions reduction when replacing natural gas systems with heat pumps
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature5 records

Partnerships

One partnership is on record.

• SolarwattcoreStrategic or Co-development PartnerSolarwatt partnership enables combination of heat pump, solar installation, and energy management. The SOLARWATT-Kooperation allows customers to benefit from integrated photovoltaic and heat pump solutions with network partner services for energy cost optimization.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Viessmann: German family-owned manufacturer of heating, industrial and refrigeration systems with strong heat pump portfolio. Closest direct competitor in German and European markets across residential and commercial heating, and recently divested its climate solutions to Carrier while pivoting toward energy systems integration.
• Vaillant Group: German family-owned heating, ventilation, and air-conditioning manufacturer with leading market position in heat pumps (aroTHERM) and domestic hot water. Direct competitor across European residential heating market, served through similar installer/wholesale channels.
• NIBE Group: Swedish listed manufacturer of sustainable energy solutions, primarily heat pumps and heating products, with strong presence in Northern Europe. Direct peer in residential and commercial heat pump segments, with comparable product breadth and installer-channel go-to-market.
• BDR Thermea Group: European market leader in smart indoor climate solutions (heating, cooling, hot water) with brands including Baxi, De Dietrich, Remeha, and Brötje. Direct competitor across European residential and commercial heating, owned by Bain Capital, with broader geographic and brand portfolio than Stiebel Eltron.
• Ariston Group: Italian-listed manufacturer of heating and hot water products with strong presence in residential European markets. Direct competitor in domestic hot water (electric and gas water heaters, heat pump water heaters) and condensing boilers, with overlap in SHK trade partner channels.

Broad incumbents

• Bosch Thermotechnology: Division of Robert Bosch GmbH offering heating, hot water, and air conditioning solutions including heat pumps (Compress 7000i/3000i). Broader incumbent with significantly larger R&D budget, cross-selling via Bosch Home Comfort group, and global reach that overlaps with Stiebel Eltron's product portfolio.
• Daikin: Global leader in HVAC and refrigeration with dominant heat pump market share worldwide. Competes with Stiebel Eltron across residential and commercial segments, and has aggressively expanded its European installer network and Altherma product line, making it the primary global incumbent threat.
• Mitsubishi Electric: Global manufacturer of air-source and ground-source heat pumps (Ecodan series) with strong European presence. Competes with Stiebel Eltron in residential and commercial heat pump segments, leveraging larger R&D scale and global manufacturing footprint.

Emerging players

• Wolf (Bosch subsidiary): German heating, ventilation, and solar thermal manufacturer now part of Bosch Home Comfort. Direct peer in residential and commercial heat pump market (CHA monobloc), with strong German installer relationships that overlap with Stiebel Eltron's SHK channel.

Others

• Solarwatt: German manufacturer of photovoltaic systems, energy storage, and energy management with which Stiebel Eltron has a strategic co-development partnership. Adjacent ecosystem participant rather than direct competitor; their integration partnership is referenced as a differentiator in Stiebel Eltron's Navigator planning tool.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/StiebelEltron
• Facebookfacebook.com/StiebelEltronDeutschland
• LinkedInlinkedin.com/company/stiebel-eltron-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries21 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 Stiebel Eltron