More Than 80 Years of Electric Heating Expertise

 
 
DEVI's history reflects more than eight decades of experience in the development of electric heating solutions. Founded in Copenhagen, Denmark, in 1942 as Dansk El-Varme Industri, the company began by manufacturing frost protection cables for cold-storage applications.
 
Since its founding, DEVI has expanded its presence across multiple markets and application areas, supporting installers, consultants, architects, contractors, and building owners with electric heating technologies designed for residential, commercial, industrial, and public buildings.
 
Today, DEVI by Danfoss continues to build on this heritage through ongoing product development, technical support, and professional training initiatives.

From Heritage to Modern Heating Solutions


Over the decades, DEVI has adapted to changing building requirements, technological developments, and evolving regulations within the construction industry.
The company's product portfolio has expanded from frost protection cables to a broad selection of solutions including:
  • Underfloor heating systems
  • Snow melting systems
  • Roof de-icing solutions
  • Pipe tracing applications
  • Electric heating controls and thermostats
  • Commercial and industrial heating installations
This evolution reflects DEVI's ongoing focus on delivering electric heating solutions for a wide range of building and infrastructure projects.

 

Electric Heating Innovation Through the Years


Innovation has played an important role in DEVI's development. Over the years, the company has introduced new products and control technologies aimed at supporting comfort, system control, and installation flexibility.
Examples include:
  • Heating mats developed for renovation and retrofit projects
  • Adaptive thermostat technologies
  • Mobile-connected heating controls
  • Digital system monitoring capabilities
  • Smart thermostat applications for remote control and scheduling
These developments allow building professionals and end users to select solutions that align with specific project requirements and operational preferences.

Electric Heating Innovation Through the Years

Innovation has played an important role in DEVI's development. Over the years, the company has introduced new products and control technologies aimed at supporting comfort, system control, and installation flexibility.
Examples include:
  • Heating mats developed for renovation and retrofit projects
  • Adaptive thermostat technologies
  • Mobile-connected heating controls
  • Digital system monitoring capabilities
  • Smart thermostat applications for remote control and scheduling
These developments allow building professionals and end users to select solutions that align with specific project requirements and operational preferences.

People Behind the DEVI Brand

Behind every DEVI product are engineers, trainers, technical specialists, manufacturing teams, sales professionals, and support colleagues working across international markets.
Their combined experience contributes to:
  • Product development
  • Technical documentation
  • Training materials
  • Customer support
  • Project consultation
This ongoing collaboration supports the company's long-standing presence within the electric heating industry and helps maintain continuity between past experience and future development.

Our team membersfrom production engineers to C-level managersbring DEVI’s story to life. They truly draw on decades of expertise in their daily work. For example, one Academy lead trainer, Alexander, started as an electrician in the 2000s and built snow-melting systems before joining DEVI. His hands-on background makes him a trusted mentor to new installers. Similarly, Krzysztof, a DEVI design engineer, fell in love with sustainable tech while studying renewable energy; he now incorporates eco-friendly features in every new product. Their colleagues span generations and cultures, but all share a commitment to quality and customer success. 

These personal journeys connect DEVI to customers. Sales expert Matteo might travel to teach DEVIreg thermostat courses in Spanish-speaking markets, reflecting our global reach. Technical Literature Specialist Alevtina, originally from Ukraine, develops multilingual tech-learning content so technicians worldwide can learn in their native language. Natalia provides high-level customer support in procurement so our Installers worldwide can easily receive any of our DEVIreg thermostats, cable or mat to experience the innovative features and easy installation. Each storyfrom the inventor of DEVImatto the mastermind  who created the DEVI Website adds warmth to the brand. 

By highlighting their motivations (engineering comfort, reducing energy waste, etc.), we make DEVI relatable. Indeed, as one longtime employee puts it: “I joined DEVI because I believe in a future powered by clean heating. These real voices, combined with our proven track record, show that DEVI is built and run by people who care. 

Key Milestones in DEVI History

1942

DEVI was founded in Copenhagen, Denmark, as Dansk El-Varme Industri, focusing on electric heating solutions and frost protection technologies.

1980s

The company expanded across Scandinavia and Western Europe, supporting a growing number of electric heating applications.

1987

DEVI introduced its own thermostat range, enabling the delivery of integrated electric heating systems combining heating elements and controls.

1997

Launch of DEVImat™, a thin heating mat developed for underfloor heating applications and renovation projects.

1998

Introduction of DEVIreg™ 550, an adaptive thermostat designed to automatically adjust heating operation according to user settings and environmental conditions.*
*Product functionality should be evaluated according to the specifications available at the time of installation.

2003

DEVI became part of the Danfoss Group, combining DEVI's electric heating expertise with Danfoss' broader experience in engineering and climate solutions.

2010s

Expansion of digital control technologies, including touchscreen thermostats and smart heating controls such as DEVIreg™ Smart.

2021

DEVI celebrated its 80th anniversary and established its headquarters in Kolding, Denmark.