What Zewotherm Heating Gmbh does

ZEWOTHERM Heating GmbH is a German, family-owned integrated energy systems manufacturer headquartered in Remagen, with additional manufacturing in Bochum and ServicePoint locations across Germany (Berlin, Poing, Hockenheim) and the Benelux region (Breda, Luxembourg). Founded in 2002 by Andreas and Silke Ziegler, the company has grown from a 5-person floor heating startup to 350+ employees, operating under the AZ Holding umbrella. Its core product portfolio spans air-to-water heat pumps (ZEWO LAMBDA series including the EU35L large-capacity model, and the entry-level ZEWO ALPHA), photovoltaic systems, lithium-ion battery storage (ZEWO PowerHub for residential, ZEWO MegaCell DH 200F scalable to 2.58 MWh for large complexes), surface heating and cooling systems, distributed ventilation, DVGW-certified composite pipe systems, and the ZEWO Dynamics energy management system (EMS) that orchestrates PV, storage, heat pump, and wallbox.

The company generates revenue through a hybrid model: one-time hardware sales manufactured in-house (including the LAMBDA heat pump line at the Remagen Manufaktur), recurring revenue streams (ZEWO DynamicEnergy dynamic electricity tariff, Wärme-Contracting, financing via ZEWOTHERM Finance), professional services (installation, maintenance, TGA-Fachplanung), OEM/white-label production, and tariff brokerage. Go-to-market is primarily indirect B2B via SHK wholesale trade partners and certified installer networks, supplemented by direct sales for enterprise Wärme-Contracting projects and direct-to-consumer energy services for private end customers. The company has invested in external innovation through the ZEWOTHERM InnoHub (9 collaborations and 4 investments, including a minority stake in vaestro), and serves as a one-stop integrated system provider for the decarbonization of building heating under the German Heizungsgesetz (Building Heating Act) regulatory framework, supported by BEG/KfW/BAFA subsidies up to 70% of system cost.

Name

Zewotherm Heating Gmbh

Legal name

ZEWOTHERM Heating GmbH

Website

https://zewotherm.com

Company type

Private

Founded year

2002

Operating status

Operating

Short description

Zewotherm Heating GmbH is a German family-owned manufacturer of integrated energy systems — heat pumps, photovoltaics, battery storage, floor heating, ventilation, and energy management — serving installers, wholesalers, and end customers across Germany and the Benelux region.

Ownership category

akta.pro rank

Product category

Building Energy Systems

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)

SIC

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

akta.pro primary industry

Microgrid, DER & Building Electrification Energy Controls (Solar/Storage/EV Load Orchestration) (BPABAGAJ)

akta.pro secondary industries

Demand Response & Load Flexibility Services (EUAMAJAF), DERMS/ADMS & Grid Operations Software Integration (Dispatch, Constraint Mgmt) (EUAMAIAG), Microgrid & Distributed Grid Equipment (Controllers, Switchgear Packages, DER Interconnection) (IMAGAAAJ)

Keywords

• Heat pump systems
• Building energy management
• Photovoltaic solar systems
• Battery storage solutions
• Surface heating systems

Headquarters

HQ city

Remagen

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware product sales: Primary revenue stream from manufacturing and selling physical products: heat pumps (LAMBDA, ALPHA), photovoltaic modules, battery storage (PowerHub, MegaCell), floor heating systems (tackers, dry-build, etc.), ventilation units (SmartFan), air conditioning (ZEWO Cool), residential stations, and composite pipe systems. Revenue is primarily one-time (product sale) with revenue recognition at point of delivery/installation.
2. Dynamic electricity tariff (ZEWO DynamicEnergy): ZEWOTHERM acts as electricity tariff provider offering dynamic electricity tariffs tied to stock exchange prices in real-time. Revenue derived from electricity supply margins, with customers receiving stock-market-linked pricing. Particularly suited for customers with heat pumps, storage, and EV wallboxes.
3. Wärme-Contracting: ZEWOTHERM plans, executes, and operates heat generation for buildings and quarters under long-term contracting agreements. Customers (housing companies, municipalities, utilities) pay for heat as a service rather than capital investment. Revenue is recurring over contract terms, typically multi-year.
4. Professional services (Montage, Wartung, TGA-Fachplanung, Kundendienst): Installation services (Montage), maintenance (Wartung), TGA technical building services planning, and customer service/support. Nationwide mounting teams support installer networks. Revenue is service-based, typically project or contract-based.
5. Financing (ZEWOTHERM Finance): Financing solutions to lower investment barriers for customers acquiring heat pump systems and energy solutions. ZEWOTHERM Finance was newly founded (2026) as part of the company's energy solutions strategy.
6. Electricity and gas tariff brokerage: ZEWOTHERM mediates electricity and gas contracts for customers, offering free comparison and brokerage of optimal tariffs. Revenue likely derived from commissions from energy suppliers.
7. OEM/Private label production: ZEWOTHERM manufactures customized system solutions as OEM partner for third parties, producing from individual components to complete systems per customer specifications.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels12 records

Core offering

ZEWOTHERM develops, manufactures, and distributes integrated energy systems for buildings, combining air-to-water heat pumps (ZEWO LAMBDA, ZEWO ALPHA), photovoltaic systems, residential and large-scale battery storage (ZEWO PowerHub, ZEWO MegaCell), surface heating/cooling, decentralized ventilation, air conditioning, DVGW-certified multilayer composite pipe systems, and apartment stations. The hardware is orchestrated by the proprietary ZEWO Dynamics energy management system (EMS), which is offered together with the ZEWO DynamicEnergy dynamic electricity tariff and complemented by Wärme-Contracting, financing (ZEWOTHERM Finance), and OEM/private-label production. Products are sold primarily through SHK wholesale trade partners and certified installer networks, with direct consumer-facing services for energy tariffs and consulting.

Product overview

ZEWOTHERM is a system provider of integrated energy solutions combining the three pillars of Energy, Heat, and Electricity into a modular, interlocking portfolio. The core product lines are the LAMBDA and ALPHA air-to-water heat pumps (available in multiple power classes from 7 kW to 35 L for residential through large-scale applications), supported by the ZEWO ECO Kombispeicher and Copar combined storage units. On the electrical side, the portfolio includes photovoltaic systems, the ZEWO PowerHub residential battery storage, the ZEWO MegaCell large-format battery storage (200 kWh per unit, scalable to 2.58 MWh), the ZEWO DynamicEnergy dynamic electricity tariff, and the ZEWO Dynamics EMS — an intelligent energy management system that orchestrates all components (PV, storage, heat pump, Wallbox) via app, load shifting, and §14a EnWG tariff optimization. Complementary products include ZEWO Cool air conditioning (split/multi-split), decentralized residential ventilation (ZEWO SmartFan), apartment stations for multi-family buildings, DVGW-certified multi-layer composite pipe systems (ZEWO Press Premium/PPSU, ZEWO Metallverbundrohr), a full range of surface heating systems (underfloor, wall, ceiling, and component activation via Tackersystem, Noppensystem, Klettsystem, and various dry-build/thin-layer variants), and the prefabricated ZEWO PowerCube heat pump central plant. The entire portfolio is tied together by the ZEWO Dynamics EMS and online product configurators. Additional services (financing, contracting, tenant electricity) are delivered through sister entities (ZEWOTHERM Finance, ZEWOTHERM Consulting). The company operates its own manufacturing (LAMBDA heat pumps Made in Germany) and offers TGA specialist planning, installation, maintenance, and training services.

Differentiator

Problem solved

Functional benefit

Brands

• ZEWO LAMBDA: High-efficiency air-to-water heat pump series with SCOP up to 6.1, designed for new builds and renovations, made in Germany at the Remagen facility.
• ZEWO ALPHA
• ZEWO Dynamics
• ZEWO MegaCell
• ZEWO PowerCube
• ZEWO PowerHub
• ZEWO Cool
• ZEWO ECO Kombispeicher
• ZEWO DynamicEnergy

Products and services

• ZEWO Wärmepumpe LAMBDA High-efficiency air-to-water heat pump using R290 refrigerant with SCOP up to 6.1 and up to 30% less electricity consumption than many A+++ heat pumps. Available in models EU08L, EU10L, EU13L, EU15L, EU20L, and EU35L including cascade configurations for large buildings. Manufactured at ZEWOTHERM facility in Remagen, Germany. Designed for SHK installers, housing developers, and end customers in new builds and retrofits, including single-family homes and multi-story residential.
• ZEWO ALPHA Heat Pump Entry-level air-to-water heat pump in 7 kW and 15 kW variants with R290 refrigerant, monoblock design (no cooling license required), up to A+++ efficiency, and flow temperatures up to 75°C. Suitable for new builds with underfloor heating and existing buildings with radiators. Designed for SHK installers and price-sensitive residential customers.
• ZEWO PowerCube (Wärmepumpenzentrale) Pre-fabricated heat pump central plant equipped with ZEWO LAMBDA heat pumps, designed for serial heat pump replacement in existing buildings. Heat pump, enclosure, sound damping, electrical and control engineering are factory-planned, pre-assembled, and tested; on-site connection to the building is all that is required. Targeted at SHK installers and project developers undertaking serial renovations.
• ZEWO Dynamics Energy Management System (EMS) Intelligent energy management system controlling PV system, battery storage, heat pump, wallbox, and home appliances, with app-based visualization, load shifting, and tariff optimization under §14a EnWG. Integrates with the ZEWO DynamicEnergy dynamic electricity tariff. Designed for installers, planners, and end customers seeking to optimize self-consumption and electricity costs.
• Photovoltaik (PV Systems) Photovoltaic (PV) systems for generating clean electricity from rooftop solar installations, designed to combine with heat pump, wallbox, and battery storage for maximum self-consumption and to qualify for state subsidies. Targeted at residential and commercial building owners via SHK installers.
• ZEWO MegaCell DH 200F Battery Storage Large-scale battery storage system with 200 kWh capacity per unit, scalable to 2.58 MWh. All-in-one design combining storage, inverter, STS, and BMS. Supports PV-only, grid-parallel, or hybrid operation with diesel generator, with plug & play setup and remote monitoring. Designed for multi-family houses, commercial properties, tenant electricity models, and large-scale energy projects.
• ZEWO PowerHub Residential Battery Storage Modular residential lithium-ion battery storage system starting at 2.5 kWh per module, expandable to suit individual needs. Features stainless steel housing for indoor and outdoor use, cloud-based controller, and intelligent module management. Optimizes PV self-consumption for residential end customers via SHK installer networks.
• ZEWO Cool Air Conditioning Split and multi-split air conditioning solutions for energy-efficient cooling and heating, compatible with PV, EMS, and heat pump. Designed for quiet operation and suitability for both renovation and new construction. Targeted at residential and small commercial customers.
• ZEWO DynamicEnergy Dynamic Electricity Tariff Dynamic electricity tariff offering real-time stock exchange electricity prices, §14a EnWG-compliant. Ideal for flexible consumers such as heat pumps, battery storage, and electric vehicles; in combination with ZEWO Dynamics EMS enables automatic scheduling to exploit cheapest electricity price windows. ZEWOTHERM acts as electricity tariff provider.
• Flächenheizung (Surface Heating Systems) Comprehensive range of surface heating systems covering all installation situations, including underfloor (Tackersystem, Noppensystem, Klettsystem, Trägermattensystem, Biofasersystem, Trockenbausystem, XPS Trockenbausystem, Dünnschichtsystem, Klimabodensystem, Frästechnik), wall, ceiling, component activation (Bauteilaktivierung), industrial floor heating, electric surface heating, and single-room controls. Designed for use with low-temperature heat sources such as heat pumps.
• Dezentrale Wohnraumlüftung (Decentralized Residential Ventilation) Decentralized ventilation units with heat recovery providing fresh air with high energy efficiency, including the ZEWO SmartFan. Compact units designed for easy installation in new and existing buildings. Targeted at residential end customers and SHK installers.
• Wohnungsstationen (Apartment Stations) Apartment stations enabling decentralized domestic hot water and space heating supply using the fresh water principle. Hygienic, low-maintenance, modular, space-saving, and energy-efficient. Targeted at multi-family residential buildings and housing companies.
• Verbundrohrsysteme (Multilayer Composite Pipe Systems) DVGW-certified multilayer composite pipe systems for safe, durable, and installation-friendly heating and drinking water installation. Product lines include ZEWO Press Premium, ZEWO Press PPSU, and ZEWO Metallverbundrohr. Designed for SHK installers across new builds, renovations, and drinking water applications.
• ZEWO ECO Kombispeicher (Combined Storage) Pre-assembled combined storage solution combining a 243L enamelled domestic hot water tank with magnesium anode and double coil with a 109L buffer. Fully pre-installed with hydraulics, pump, 8.8 kW heating element, and three-way valve. Compatible with LAMBDA EU08L–EU15L heat pumps. Targeted at residential installations.
• Wärme-Contracting (Heat-as-a-Service) ZEWOTHERM plans, executes, and operates heat generation for buildings and quarters under long-term contracting agreements. Customers (housing companies, municipalities, utilities) pay for heat as a service rather than capital investment. Revenue is recurring over typically multi-year contract terms.
• ZEWOTHERM Finance Financing solutions offered by ZEWOTHERM Finance to lower investment barriers for customers acquiring heat pump systems and energy solutions. Targeted at private homeowners, housing companies, and commercial customers seeking capital-efficient access to integrated energy systems.
• ZEWOTHERM OEM / Private Label Production OEM manufacturing of customized system solutions for third-party companies, producing from individual components to complete systems per customer specifications. Targeted at other building technology brands and distributors seeking German-made production capacity.
• Professional Services (Montage, Wartung, TGA-Fachplanung, Kundendienst) Installation (Montage) services including nationwide mounting teams for installer networks, maintenance (Wartung), TGA technical building services planning (TGA-Fachplanung), and customer service/support (Kundendienst). Project or contract-based, supporting both residential and commercial customers and ZEWOTHERM's installer and wholesaler partners.

Quantifiable outcome

• SCOP up to 6.1; up to 30% less electricity than many A+++ heat pumps (ZEWO LAMBDA)
• +3 more outcomes

Named customers3 records

Segments5 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

AI capability3 records

Feature10 records

Partnerships

Three partnerships are on record, tiered minor and core.

• vaestrominorStrategic or Co-development Partnervaestro is a startup specializing in Wärme-Contracting (heat contracting), presented by CEO Henri Voigt at ZEWOTHERM's facility. Represents a collaborative ecosystem relationship through the ZEWOTHERM InnoHub, where vaestro's contracting business complements ZEWOTHERM's hardware and contracting offerings.
• evm (Energieversorgung Mittelrhein)minorStrategic or Co-development PartnerRegional energy utility (Energieversorgung Mittelrhein) visited ZEWOTHERM headquarters for an open and constructive exchange on regional energy topics. Represents a local strategic relationship between a regional energy company and ZEWOTHERM's energy solutions ecosystem.
• ZEWOTHERM InnoHub (Startup Ecosystem)coreStrategic or Co-development PartnerThe InnoHub is ZEWOTHERM's own innovation platform that supports and invests in energy sector startups. As of December 2025, it has conducted 9 successful collaborations and 4 investments with startups, including vaestro. The hub aims to accelerate new ideas, business models, and technological developments in the energy sector.

Scale indicators5 records

Recent moves8 records

Expansion highlights12 records

Direct peers

• Stiebel Eltron: German-based manufacturer of heat pumps, domestic hot water, ventilation, and renewable heating technology. Comparable in product scope (heat pumps, DHW, ventilation) and in targeting SHK installers with a Made-in-Germany positioning.
• Vaillant: Remscheid, Germany-based heating technology manufacturer (aroSTOR, aroTHERM heat pumps) with strong installer network. Comparable as a long-established German heat-pump and heating-systems OEM with similar SHK/wholesale distribution and subsidy-aligned product lines.
• Viessmann: Allendorf, Germany-based family-owned manufacturer of heating, industrial and refrigeration systems including a broad heat-pump portfolio. Highly comparable as a German integrated heating-system manufacturer targeting SHK installers and end customers with subsidy-eligible heat-pump solutions.
• Bosch Thermotechnology (Home Comfort): Business unit of Bosch selling heating and hot-water solutions including heat pumps (Buderus, Junkers brands) plus connected energy management. Directly comparable as a manufacturer of integrated residential heating systems distributed through SHK wholesale and installer channels.
• Wolf (part of Bosch): German HVAC and heat-pump manufacturer acquired by Bosch, serving SHK installers with heating, ventilation, and integrated system solutions. Comparable product portfolio and channel structure to Zewotherm, with the additional backing of a global group.
• Buderus: Bosch-owned German heating-systems brand offering heat pumps, condensing boilers, and integrated energy solutions via SHK wholesale. Comparable as a long-standing German manufacturer with strong installer relationships and subsidy-eligible heat-pump products.

Emerging players

• E3/DC: Osnabrück-based manufacturer of residential and commercial battery storage with proprietary energy management. Comparable on the storage-plus-EMS pillar of Zewotherm's portfolio and on its focus on self-consumption optimisation.
• 1Komma5° (1point5 Degrees): Hamburg-based installer-network company offering integrated residential energy systems (heat pumps, PV, storage, dynamic tariff, Wallbox) with proprietary energy management software. Closest direct comparison to Zewotherm's full-stack integrated-energy proposition, though built on an installer-network model rather than manufacturing.
• Solarwatt: Dresden-based manufacturer of PV modules, battery storage, and energy management systems for residential customers. Comparable overlap on the PV + battery + EMS side of Zewotherm's integrated stack, though without the heat-pump core.

Broad incumbents

• Daikin Europe (Daikin Heating): European arm of the global Japanese HVAC giant, offering the Altherma heat-pump range in Germany. Comparable on heat-pump manufacturing and HVAC distribution, with broader global scale and a much larger R&D and marketing budget.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

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Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries6 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 Zewotherm Heating Gmbh