HG‑TEC GmbH

What HG‑TEC GmbH does

HG-TEC GmbH (full legal name: HG-TEC Heizungs- und Gusstechnik GmbH) is a privately held German industrial manufacturer headquartered at Essener Straße 60, 42327 Wuppertal, Germany. The company designs and produces DIN/EN-compliant cast iron radiators (Gussradiatoren), steel radiators (Stahlradiatoren), and custom special heating elements (Sonderheizkörper), alongside an SML (Sandwich-Metal-Layer) drainage system and exclusively powder-coated Formstücke fittings. It self-describes as the largest German supplier of DIN/EN cast iron radiators and the largest European supplier of DIN/EN steel radiators, with manufacturing precision and adherence to European norms positioned as core quality tenets. The company was founded approximately 30 years ago, originated from a craftsman/handwerk business, is registered as Wuppertal HR B 18539 (VAT DE 813 557 976), and is led by Managing Director Gabriele Kahlert.

The underlying technology stack is conventional heavy-industry metallurgy: cast iron and steel radiator production to DIN/EN standards, plus centrifugal and static casting for SML pipe products, with powder coating used in place of chrome plating to address environmental concerns. HG-TEC voluntarily subjects its SML drainage system to TÜV-Rheinland/LGA testing at stress levels exceeding German and European norms, holds patents across multiple product areas, and offers a 20-year warranty on cast iron radiators.

The business model is B2B hardware sales through a three-tier distribution architecture: HG-TEC sells to the German and European sanitary and heating wholesale trade (Sanitär- und Heizungsgroßhandel), which in turn supplies SHK installation and assembly companies serving end residential and commercial customers. Geographic reach is stated as the American continent, European continent and parts of Asia (Dubai, UAE). Demand generation is primarily executed via free training sessions, expert lectures at Meisterschulen, trade publication content and on-site construction support rather than paid marketing. Revenue is hardware sales only; no pricing models, subscription, software or service revenue streams are disclosed.

Name

HG‑TEC GmbH

Legal name

HG-TEC Heizungs- und Gusstechnik GmbH

Website

https://hg-tec.de

Company type

Private

Operating status

Operating

Headcount range

101–250 employees

Short description

HG-TEC GmbH is a privately held German manufacturer in Wuppertal producing DIN/EN cast iron radiators, steel radiators, special heating elements, and SML drainage systems, selling through the European sanitary and heating wholesale trade to SHK installers across Europe, the Americas and Dubai/UAE.

Ownership category

akta.pro rank

Product category

Heating Equipment Manufacturing

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB)

akta.pro secondary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Cast iron radiators
• Steel radiators
• SML drainage systems
• Heating equipment manufacturing
• Sanitary wholesale supply

Headquarters

HQ city

Wuppertal

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

Revenue model

1. Radiator and Heating Product Sales: Revenue generated from the sale of DIN cast iron radiators, DIN steel radiators, special heating elements, and SML pipe systems to wholesale trade partners and installation companies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

HG-TEC GmbH manufactures and supplies DIN/EN standard cast iron radiators (Gussradiatoren), DIN/EN standard steel radiators (Stahlradiatoren), custom special heating elements (Sonderheizkörper), SML drainage pipe systems, and exclusively powder-coated fittings (Formstücke). The company operates as a three-tier supplier distributing these products through the German and European sanitary and heating wholesale trade, with additional reach into the Americas and parts of Asia (Dubai, UAE).

Product overview

HG-TEC GmbH is a German manufacturing company specializing in heating technology products. Their core product portfolio consists of DIN/EN Gussradiatoren (cast iron radiators), DIN/EN Stahlradiatoren (steel radiators), and Sonderheizkörper (special heating elements). The company also produces SML-Abwassersystem (SML drainage systems) and pulverbeschichtete Formstücke (powder-coated fittings). As a three-tier supplier, they serve the German and European sanitary and heating wholesale trade, with distribution extending to the Americas, Europe, and parts of Asia (Dubai, UAE). HG-TEC positions itself as a market leader in several product categories, offering extended warranties such as 20 years on cast iron radiators.

Differentiator

Problem solved

Functional benefit

Products and services

• DIN/EN Gussradiatoren (Cast Iron Radiators) DIN/EN standard cast iron radiators manufactured to meet European precision standards. HG-TEC is the largest German supplier of these products, offering a 20-year warranty on cast iron radiators. Targeted at the German and European sanitary and heating wholesale trade.
• DIN/EN Stahlradiatoren (Steel Radiators) DIN/EN standard steel radiators precision-manufactured to European standards. HG-TEC is the largest European supplier of these precision steel heating elements. Targeted at the sanitary and heating wholesale trade and installation companies.
• Sonderheizkörper (Special Heating Elements) Custom/special heating elements manufactured to specific customer requirements beyond standard DIN/EN specifications. Sold through wholesale trade to specialized installation projects.
• SML-Abwassersystem (SML Drainage System) SML (Sandwich-Metal-Layer) drainage pipe systems produced via core-casting and centrifugal-casting methods. HG-TEC voluntarily subjects this system to testing by TÜV-Rheinland/LGA at significantly higher stress levels than required by German and European standards. Distributed through wholesale trade to plumbing and drainage installers.
• Pulverbeschichtete Formstücke (Powder-Coated Fittings) SML pipe fittings manufactured exclusively in powder-coated quality, which HG-TEC considers state of the technology and environmentally friendly (eliminating chrome plating). Distributed as accessories to the SML drainage system via wholesale trade.

Quantifiable outcome

• 20-year warranty on cast iron radiators
• +1 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• Großhandel (Wholesale Trade)coreChannel Partner/ Reseller/ DistributorAs a three-tier supplier, HG-TEC operates with wholesale trade as an important partner. The partnership is based on trust of long-term wholesale customers, enabling continuous business growth and securing jobs on both sides. The focus is on fair play and long-term relationships.
• Installations- und Montagebetriebe (Installation and Assembly Companies)coreChannel Partner/ Reseller/ DistributorInstallation and assembly companies (SHK companies) are the roots and future of the industry. HG-TEC's origin is from a craft business approximately 30 years ago, and they continue to support the skilled trades through quality products and technical expertise.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/hg-tec-gmbh

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 HG‑TEC GmbH