WIEDEMANN Group

What WIEDEMANN Group does

WIEDEMANN Group (Unternehmensgruppe WIEDEMANN) is a German building services technical wholesaler (haustechnischer Fachgroßhandel) headquartered in Sarstedt with a regional operating hub in Siek. Founded in 1925 by Walter Wesemeyer in Hamburg as a metal wholesale business, the group has grown over a century into a multi-branch distributor of sanitary ware, heating technology, ventilation and climate control, electrical systems, pipes and tubes, tools, and installation materials. The group operates physical branch locations in Siek, Sarstedt, Burg, and Berlin, supplemented by a proprietary e-commerce platform (shop.wiedemann.de), a parts finder tool (Teilefinder), a mobile app, e-procurement interfaces, and the b:work handwerker business software. It also operates the badpunkt bathroom showroom brand and provides specialized services including planning and consulting (WIEDEMANN Planung und Beratung), duct construction (Luftkanalbau), pipe processing, and dedicated hospital and hotel technology solutions.

The company's revenue model is wholesale distribution of building services products across both physical counter sales and online channels, serving primarily Fachhandwerker (professional tradespeople including plumbers, electricians, heating installers, and contractors), with secondary segments in private end customers, hospital and healthcare facilities, hotel and hospitality operators, and the public sector. WIEDEMANN differentiates through a portfolio of proprietary and exclusive brands — including SCALIDO (Designbad mit System, BLACK Edition, Expressprogramm), sanibel, comfort by sanibel, 4YOU, ARTO, and ACTIS — and through value-added services such as technical consulting, duct and pipe fabrication, and specialized institutional solutions. As a member of the HBG (Handelsverbund Betriebstechnik) purchasing cooperative, WIEDEMANN benefits from shared procurement, logistics, and operational synergies with peer building technology wholesalers. In 2025 the group unified all subsidiaries (Siek, Sarstedt, Burg, Berlin, Planung und Beratung, Gebäudetechnik, LSH) under a single WIEDEMANN brand identity, consolidating what was previously a federation of regional entities into a coherent national group.

Name

WIEDEMANN Group

Legal name

WIEDEMANN Siek GmbH

Website

https://wesemeyer.de

Company type

Private

Founded year

1925

Operating status

Operating

Headcount range

11–50 employees

Short description

WIEDEMANN Group is a German building services technical wholesaler founded in 1925, distributing sanitary, heating, ventilation, electrical, and pipe products through four regional branches and an e-commerce platform to tradespeople, contractors, and institutional customers across northern Germany.

Ownership category

akta.pro rank

Product category

Building Services Wholesale (Haustechnik Großhandel)

NAICS

Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers (42373)

SIC

Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

HVAC, Water Heaters & Indoor Air Quality Distribution (CRAOAFAJ)

Keywords

• Building services wholesale
• Sanitary products distribution
• Heating technology supplies
• Ventilation systems wholesale
• Plumbing and electrical supplies

Headquarters

HQ city

Sarstedt

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Product wholesale and distribution: WIEDEMANN generates revenue through the wholesale distribution of building services products across multiple categories including sanitary ware, heating technology, ventilation and climate control, electrical, pipes/tubes, tools, and installation materials. Revenue is generated through both physical branch sales and online e-commerce channels, targeting tradespeople, contractors, and end customers.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

WIEDEMANN Group is a German building services technical wholesaler (haustechnischer Fachgroßhandel) that distributes sanitary ware, heating technology, ventilation and air conditioning, electrical products, pipes, and tools to tradespeople, contractors, and end customers. The company operates multiple physical branches across Germany complemented by an online shop, exclusive own brands (SCALIDO, sanibel, 4YOU, ARTO, ACTIS), and value-added services including planning/consulting, duct construction, pipe processing, and specialized hospital and hotel technology solutions.

Product overview

WIEDEMANN Group is a leading building technology (Haustechnik) specialist wholesale company founded in 1925, operating as a multi-location group with a comprehensive portfolio of sanitary products, heating technology, ventilation & air conditioning, installation materials, pipes, electrical products, and tools. The company offers its own proprietary brands (SCALIDO including Designbad mit System and BLACK Edition, plus sub-brands Express), exclusive brands (sanibel, comfort by sanibel, 4YOU, ARTO, ACTIS), professional services (planning and consulting, duct construction, pipe processing, hospital and hotel technology), digital services (ONLINE-Shop, Teilefinder, WIEDEMANN APP, E-Procurement, b:work software), and operates bathroom showrooms under the badpunkt brand. The portfolio serves private, public, and commercial properties across Schleswig-Holstein, Hamburg, and Mecklenburg-Vorpommern.

Differentiator

Problem solved

Functional benefit

Brands

• badpunkt: Bathroom showrooms for individual bathroom consulting
• SCALIDO
• sanibel
• comfort by sanibel
• 4YOU
• ARTO
• ACTIS

Products and services

• Sanitär Sortiment (Sanitary Product Range)
• Heiztechnik Sortiment (Heating Technology Range)
• Lüftung & Klima Sortiment (Ventilation & Air Conditioning Range)
• Röhren Sortiment (Pipes Range)
• Elektro Sortiment (Electrical Range)
• Installation Sortiment (Installation Materials Range)
• Werkzeug Sortiment (Tools Range)
• SCALIDO – Designbad mit System
• sanibel
• 4YOU
• ARTO
• ACTIS
• WIEDEMANN Planung und Beratung (Planning and Consulting)
• Luftkanalbau (Duct Construction)
• Rohrbearbeitung und -veredelung (Pipe Processing and Finishing)
• Krankenhaus- und Hoteltechnik (Hospital and Hotel Technology)
• badpunkt Badausstellungen (Bathroom Showrooms)
• Industrie und Anlagenbau (Industrial and Plant Construction)
• LSH – Lösungen für Fachhandwerksbetriebe (Solutions for Trades Businesses)

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• HBG (Handelsverbund Betriebstechnik)coreStrategic or Co-development PartnerWIEDEMANN Group is part of the HBG (Handelsverbund Betriebstechnik) purchasing and cooperation network. HBG is a verbund (association) of building technology trading companies, providing shared procurement, logistics, and operational synergies among member companies.

Scale indicators2 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Richter+Frenzel: Major German building services and sanitary wholesale group with multi-state branch network. Competes head-to-head with WIEDEMANN in sanitary, heating, and installation categories and serves a comparable trade customer base.
• REISSER: German technical wholesaler focused on sanitary, heating, and plumbing products with branches across multiple German states. Overlaps with WIEDEMANN in product range, target tradesperson customers, and multi-channel distribution model.
• GC-Gruppe (Cordes & Graefe): Largest German Haustechnik specialist wholesaler serving sanitary, heating, and plumbing trades across Germany. Closest comparable to WIEDEMANN's core distribution business, with national scale, own brands, and a similar Fachhandwerker customer base.

Broad incumbents

• Hornbach Holding: European DIY and trade retail chain with deep assortment in sanitary, heating, tools, and electrical. Partially overlaps with WIEDEMANN's product categories but serves primarily retail/prosumer customers rather than specialist Fachhandwerker.
• BayWa AG: German trading and services group active in building materials, energy, and agriculture distribution. Adjacent to WIEDEMANN through building materials and energy/heating distribution to trade and contractor customers in southern Germany and beyond.
• Würth Group: Global market leader in fasteners, tools, and technical supplies serving trades and industry. Operates a much broader product range than WIEDEMANN but competes in the tools and installation materials categories serving the same tradesperson customer.
• Ferguson Enterprises: Largest North American plumbing and HVAC distributor with growing European presence. Competes with WIEDEMANN in plumbing, heating, and waterworks distribution but at vastly greater scale and with a primarily B2B trade model.
• Saint-Gobain Distribution: International building materials and distribution group with German presence across multiple construction product categories. Overlaps with WIEDEMANN in plumbing and heating distribution but operates as part of a much larger diversified portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCsr3cpl7cRU5Wt4IdKHLlag
• Facebookfacebook.com/wiedemanngruppe
• LinkedInlinkedin.com/company/walter-wesemeyer-gmbh
• Instagraminstagram.com/wiedemann_gruppe
• Xx.com/WiedemannGruppe

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 WIEDEMANN Group