Tecalor

What Tecalor does

Tecalor GmbH is a German manufacturer of residential heat pumps (Wärmepumpen) and ventilation systems (Lüftungssysteme), headquartered in Holzminden and operating as a wholly-owned subsidiary of the STIEBEL ELTRON Gruppe. Founded in 2001 and employing 51–100 people, the company designs and sells central and decentralized ventilation units with up to 90% heat recovery, multi-function THZ integral systems combining ventilation, heating, hot water, and cooling in a single device, system storage tanks, apartment stations for multi-family buildings, and energy management controls. Its product portfolio spans over 578 ventilation SKUs, 89 accessories, and a 4,000+ spare parts catalog, supported by the ISG Internet Service Gateway and tecalor Home App for remote system control.

The company operates a dual-channel go-to-market model: private customers are reached through the waermepumpe.tecalor.de consumer portal and a direct-to-consumer accessories e-commerce shop, while specialist trade partners (Fachpartner) — including HVAC installers, electrical contractors, renewable energy specialists, and building professionals — access the fachkunden.tecalor.de portal for ordering, planning tools, technical resources, and 24/7 spare parts procurement with a 2% partner discount. Pricing is quote-based and not publicly disclosed for systems, while accessories are sold at listed unit prices (e.g., filter replacements €6.69–€311.62). Revenue streams consist predominantly of hardware sales across heat pumps, ventilation units, and system storage, complemented by professional services including planning support, commissioning, factory warranty extensions to 5 or 7 years, and maintenance. Distribution is single-country (Germany), with building automation interoperability delivered through Modbus TCP/IP and KNX (EM Trend EMI KNX module) integrations.

Name

Tecalor

Legal name

tecalor GmbH

Website

https://tecalor.de

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

51–100 employees

Short description

Tecalor GmbH is a German manufacturer of residential heat pumps, ventilation systems with heat recovery, and integral HVAC solutions, serving private homeowners and specialist trade partners across Germany as a subsidiary of the STIEBEL ELTRON Gruppe.

Ownership category

akta.pro rank

Product category

Residential HVAC Equipment

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

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

akta.pro primary industry

Chillers & Cooling Plant Equipment (IMAHAKAE)

akta.pro secondary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Heat pump systems
• Ventilation systems
• Residential heating
• Heat recovery ventilation
• Energy management solutions

Headquarters

HQ city

Holzminden

HQ country

Germany

HQ region

Europe

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Pump Sales: Sale of heat pump systems for residential heating applications, including air-to-water and other heat pump technologies
2. Ventilation Systems: Sale of central and decentralized ventilation units with optional heat recovery, including integral systems for single-family homes and multi-family buildings
3. System Storage Products: Sale of buffer storage tanks, drinking water storage, combination storage, and integral storage solutions for heat pump systems
4. Spare Parts and Accessories: Online shop offering over 4,000 spare parts for heat pumps and ventilation systems, including replacement filters, fans, and components
5. Consumer Accessories: Direct-to-consumer sales of replacement filters and accessories for residential customers through the Zubehör für Zuhause shop
6. Professional Services: Planning, commissioning, warranty, maintenance, and digital services for installations

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels9 records

Core offering

Tecalor manufactures and sells energy-efficient heat pump systems and ventilation solutions for residential buildings in Germany. Its core portfolio includes air-to-water heat pumps, central and decentralized ventilation units (with up to 90% heat recovery), THZ-Series integral systems combining ventilation, heating, hot water and cooling in a single device, system storage tanks, and apartment stations for multi-family housing. The company sells directly to private homeowners through its consumer website, and through registered specialist trade partners (Fachpartner) via a dedicated B2B portal featuring over 4,000 spare parts.

Product overview

Tecalor is a German manufacturer specializing in heat pumps and ventilation systems for residential applications. The company's product portfolio centers on three core product categories: (1) Wärmepumpen (heat pumps) for space heating and hot water preparation, (2) Lüftungssysteme (ventilation systems) available in central and decentralized configurations with heat recovery capability, and (3) Systemspeicher (system storage) including buffer storage, drinking water storage, combination units, and integral storage solutions. Supporting product lines include Wohnungsstationen (apartment stations) for multi-family buildings, Regelung/Energiemanagement (control and energy management) with the ISG gateway and Home App, and comprehensive Serviceleistungen (service offerings). The ventilation product range spans multiple series: central systems include TVD, TVZ, TZL, TCO, and THZ (integral units combining ventilation, heating, cooling, and hot water), while decentralized units include LTM Thermo-ventilators and LA/TDL series. Accessories include replacement filters (FMK/FMS series), summer cassettes (LSK), and smart home integration via Modbus TCP/IP and KNX. The company operates as part of the STIEBEL ELTRON group, serving both private customers and trade professionals.

Differentiator

Problem solved

Functional benefit

Brands

• THZ-Serie: Heat pump products
• TCO, TVD, TVZ, TZL series
• LTM, LA, TDL series

Products and services

• Wärmepumpe (Heat Pumps) Heat pumps (Wärmepumpen) for residential space heating and hot water preparation, including air-to-water variants for single-family homes and apartment buildings. Intended for end consumers and installer partners specifying heating systems.
• Lüftungssysteme (Ventilation Systems) Central and decentralized ventilation units (Lüftungssysteme) for controlled residential ventilation, available with or without heat recovery (up to 90% recovery) and including both wall- and ceiling-mounted decentralized devices. Targeted at homeowners seeking improved indoor air quality and reduced heat loss.
• THZ-Serie Integral Systems THZ-Series integral units combining up to four functions — ventilation, heating, hot water preparation, and cooling — in a single device for residential single-family and multi-family applications. Designed for compact installations where space-saving and integrated energy management matter.
• Systemspeicher (System Storage) System storage family (Systemspeicher) including buffer storage tanks, drinking water storage, combination / flow-through storage, and integral storage (TSBC, TSB) for efficient heat energy management in heat pump installations. Targeted at installer partners and multi-family housing operators needing hydraulic separation and hot-water storage.
• Wohnungsstationen (Apartment Stations) Apartment stations (Wohnungsstationen) for multi-family buildings, enabling centralized heat distribution with individual hot water preparation, per-apartment temperature control, and consumption-based billing. Sold to housing associations, property managers, and building contractors.
• Regelung / Energiemanagement (Control / Energy Management) Control and energy management systems (Regelung / Energiemanagement) including the ISG (Internet Service Gateway) and the tecalor Home App for remote control and smart-home connectivity. Integration with KNX building automation (EM Trend EMI KNX module) and Modbus TCP/IP for building management systems is supported. Sold to end consumers and installer partners.
• Serviceleistungen (Service Offerings) Professional service package (Serviceleistungen) including planning support, commissioning, extended warranty to 5 or 7 years via factory warranty checks, maintenance, and digital services for heat pump and ventilation installations. Sold to installer partners and end consumers as an add-on to purchased hardware.
• Zubehör für Zuhause (Home Accessories Shop) Direct-to-consumer online shop (Zubehör für Zuhause) selling over 4,000 original Tecalor spare parts, replacement filters in filter classes G2–E12, summer cassettes (LSK), replacement fans, and other accessories for end customers maintaining their own ventilation and heat pump systems.

Quantifiable outcome

• Up to 90% of heat energy can be recovered with heat recovery ventilation systems
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• STIEBEL ELTRON GroupcoreStrategic or Co-development PartnerTecalor GmbH is part of the STIEBEL ELTRON group, which includes STIEBEL ELTRON GmbH & Co. KG and STIEBEL ELTRON Deutschland Vertriebs GmbH. The partnership involves shared data storage and contact purposes, product development synergies, and joint marketing activities. Tecalor products are developed and manufactured with access to STIEBEL ELTRON's technology platform and distribution infrastructure.
• Registered Specialist Partners (Fachpartner)coreChannel Partner/ Reseller/ DistributorNetwork of registered trade partners including HVAC installers, electrical contractors, renewable energy installers, refrigeration technicians, ventilation builders, solar specialists, building companies, housing associations, engineering firms, architects, and energy consultants who install and service Tecalor products throughout Germany.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Vaillant Group: German-headquartered HVAC group (Vaillant, aroSTOR, pro clima) with a strong residential heat-pump and ventilation product line serving the same specialist installer channel as Tecalor across Germany and Europe.
• Weishaupt: German family-owned manufacturer of heating systems including heat pumps and condensing boilers, distributed through installer partners. Same DACH market and specialist trade partner go-to-market as Tecalor.
• Glen Dimplex (Dimplex): European heating group whose Dimplex brand is one of the longest-established residential heat-pump manufacturers in Germany. Overlaps Tecalor on product (air-source and brine-to-water heat pumps), channel (specialist installers), and German end customer.
• Viessmann: Leading German manufacturer of residential and commercial heating systems, with a major focus on heat pumps and integrated HVAC. Closely comparable to Tecalor on product (heat pumps, ventilation), end market (German residential), and channel (specialist trade partner).
• NIBE Energy Systems: Swedish-listed leader in residential heat pumps and heat-recovery ventilation sold across Europe. Directly comparable product portfolio (air-source heat pumps, HRV units) and overlapping end customer (homeowners/specifiers) with Tecalor.
• Maico: German ventilation specialist producing HRV units, decentralised fans and indoor air-quality systems for residential buildings. Comparable on product (ventilation with heat recovery), German sales footprint, and customer (installers and end consumers).
• Helios Ventilatoren: Specialist German ventilation-equipment manufacturer covering HRV units, axial and centrifugal fans for residential and small commercial buildings. Directly comparable to Tecalor's ventilation side of the portfolio in the same DACH market and installer channel.

Broad incumbents

• Daikin Europe: Global HVAC major with a substantial German heat-pump presence (Daikin Altherma). Competes with Tecalor on residential heat pumps and split ventilation, but at significantly larger scale and with a broader product portfolio.
• Mitsubishi Electric (Living Ecology / Ecodan): Global HVAC and electronics major selling residential air-source heat pumps (Ecodan) and MVHR into the German market. A broader incumbent than Tecalor but competes head-to-head on the same residential heat-pump specification wins.
• Bosch Home Comfort (Thermotechnik): Division of Bosch covering residential heating, heat pumps and hot-water systems under brands including Bosch, Buderus and Junkers. Operates as a much broader incumbent than Tecalor but directly overlaps on heat-pump and ventilation products in the same German specialist channel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/tecalor-gmbh
• Facebookfacebook.com/tecalor.gmbh
• LinkedInlinkedin.com/company/tecalor
• Instagraminstagram.com/tecalor

Compliance1 record

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 Tecalor