Heating Mats

  • Overview
  • Product range
  • Documents
  • Tools and apps
  • FAQ
  • Warranty
  • Learning
  • Case stories
  • Contact us

Heating mats

The heating mats are used for installation in a thin layer of tile adhesive, self-leveling mixture, or similar. The standard minimum thickness of the floor layer is 5-8 mm while the thickness of electric heating mat is 3–4.5 mm. This minimizes the floor level increase. Electric heating mats consist of a thin cable securely fixed on self-adhesive glass-fiber mesh, usually of 50 cm width. Thin heating mats are manufactured as ready-made heating sections with a specific area (i.e. 0.5, 1, 1.5 … 12 m²) including a power supply cable (cold lead) and hermetically sealed connections.

Check our application manuals via the links below to get the best recommendations for design and installation of floor heating systems.​
DEVI indoor application manual​
Danfoss indoor application manual​

Benefits of electric heating

Benefits of electric underfloor heating

A comfortable ambient temperature and quick response time are just a couple of the benefits electric heating offers. Learn more about these and other benefits of electric heating.

Features and benefits using heating mats

Easy and quick installation

Quick responding floor heating

Low floor height increase

High durability, no maintenance

Long life-time with up to 20-year full warranty

Product range

Related products

Relevant accessories

Relevant accessories

Find relevant accessories by following this link

Elements of electric heating mat

  1. Heating cable​
  2. Adhesive mesh​
  3. Connection to power supply​
  4. Connecting muff​
  5. Supply cable


Electric heating videos on YouTube

You can see all our videos about Electric Heating on a dedicated playlist on YouTube. Follow the link below.


Type Name Language Valid for Updated Download File type
Application guide Danfoss Indoor Cable Floor Heating Systems Application manual English Multiple 20 Aug, 2018 3.6 MB .pdf
Catalog Danfoss Product catalogue English Multiple 20.8 MB .pdf
Application guide DEVI Indoor Application manual English Multiple 04 Nov, 2016 23.6 MB .pdf
Catalog DEVI Product Catalogue English Multiple 14 Mar, 2024 28.4 MB .pdf
Data sheet DEVIbasic™ 20S - 230 V & 400 V English Multiple 22 Feb, 2024 254.5 KB .pdf
Data sheet DEVIcomfort™ 100T English Multiple 22 Feb, 2024 237.1 KB .pdf
Data sheet DEVIcomfort™ 10T English Multiple 07 Jun, 2024 240.9 KB .pdf
Data sheet DEVIflex™ 10T English Multiple 22 Feb, 2024 241.3 KB .pdf
Data sheet DEVIflex™ 18T English Multiple 22 Feb, 2024 240.7 KB .pdf
Data sheet DEVIflex™ 6T English Multiple 22 Feb, 2024 228.1 KB .pdf
Data sheet DEVIheat™ 150S & Mirror 150S English Multiple 22 Feb, 2024 359.8 KB .pdf
Data sheet DEVImat™ 150T English Multiple 22 Feb, 2024 326.8 KB .pdf
Data sheet ECflex 100T English Multiple 17 Jul, 2023 687.0 KB .pdf
Data sheet ECflex 50T English Multiple 17 Jul, 2023 684.8 KB .pdf
Data sheet ECflex 6T English Multiple 23 Jul, 2020 438.2 KB .pdf
Data sheet ECflex 75T English Multiple 17 Jul, 2023 695.6 KB .pdf
Data sheet ECflex™ 10T (EFTCP) English Multiple 17 Jul, 2023 448.8 KB .pdf
Data sheet ECflex™ 18T (EFTCP) English Multiple 17 Jul, 2023 378.4 KB .pdf
Data sheet ECflex™ 20T (EFTCP) English Multiple 17 Jul, 2023 387.2 KB .pdf
Data sheet ECheat 150S English Multiple 17 Jul, 2023 373.6 KB .pdf
Data sheet ECmat 100T English Multiple 17 Jul, 2023 394.5 KB .pdf
Data sheet ECmat 150T English Multiple 17 Jul, 2023 403.7 KB .pdf
Data sheet ECmat 200T English Multiple 17 Jul, 2023 395.9 KB .pdf
Operating guide Outdoor Heating Applications English Multiple 16 May, 2024 8.9 MB .pdf
Operating guide Outdoor Heating Applications English Multiple 10 May, 2024 9.9 MB .pdf

Tools and apps

electric heatting

80 years of energy efficient and environmentally friendly electric heating innovation


Most floor finishes are suitable for use with underfloor heating, provided the floor has been prepared correctly and any manufacturer’s temperature guidelines have been followed. With finishes, such as wood laminates and carpets, it is essential that the heating mat is completely covered with a suitable floor leveling compound before the specified finish is applied. 

Moreover, for flooring, such as laminate, wooden parquet or carpet, we recommend DEVIdry™ / ECdry solutions as well as the use of a thermostat/regulator with a floor sensor. 

The heating mat is designed to be laid directly onto an existing floor surface, so it does not require insulation. However, if there is room within the floor to add insulation or a tile-backer board, we strongly recommend this as it will enhance performance and reduce operating costs. Please contact us in Electric heating for information. 

CONTACT YOUR ELECTRICIAN. Fuses can blow or circuit breakers can trip on either short circuit or overload, short circuit being the most common cause 

No, the electric heating mat cannot be shortened as this will alter the resistance of the element, which may lead to overheating. It is therefore important that the area to be heated is measured accurately (free floor area only) and that you select the closest smaller area element. Please feel to ask DEVI service for help. Mesh can be cut, but take care to not cut or damage a cable. 

The mat has an adhesive backing; if the floor is dusty or greasy, it will not stick particularly well. Priming the floor will significantly help the mat to fully adhere to the floor surface. 

The cold tails/leads have to be brought out of the floor and have to be connected in parallel, e.g., core colors connected together, brown with brown, blue with blue, etc. into a thermostat. 

The underlay that is usually supplied with wood laminate is an acoustic about 2-3mm thick; this is acceptable. If you are installing anything else, please call our technical team for advice. 

For laminate, we recommend DEVIdry™ / ECdry solution. 

We in electric heating do not recommend that the heating mat is installed under any such fixtures for a number of reasons. For example, it can inhibit the heat being produced from the system; and, if ever a fault was to occur, it would be extremely difficult to carry out a repair. 

We strongly recommend that each section of floor with a different covering has its own ‘mat’ as well as thermostat since each floor surface has a different maximum temperature limit. We advise to use a thermostat with a floor heating sensor. 

Contact our local office to discuss the best options for this floor. 

The actual width of the mat is 480 mm, but it is recommended that it be laid at 500 mm intervals to ensure the correct gap between runs is achieved. 

The difference between the two mats is the cold tail/lead (connection to thermostat). 

The twin conductor mat does not have a second connection tail/cable to return to the thermostat. The single conductor mat has a single “cold tail” at each end of the mat, and they have to be brought back together at the connection point. 

This is the connection at the end of the twin conductor mat where the heating element is connected to the neutral return. This is manufactured within the cable. 



At Danfoss, it is important for us to deliver high-quality products with long-lasting effects. Should you, against all expectations, experience a problem with your product, Danfoss offers a warranty for electric heating products valid from the date of purchase that was no later than 2 years from production date.
Depending on the product, the product guarantee is valid for two years, five years, or twenty years.
Product warranty covers costs for:

  • product replacement with a new comparable product or repair of the product
  • transportation costs
electric heating

How to register for an electric heating warranty

Learn how to properly check cables or mats, do a resistance test and take all the necessary steps to get a warranty.


Danfoss learning - online training free of charge

Visit our Learning Center

Danfoss offers online training materials for technicians and designers working with electric heating. There are 3 e-lessons available free and on-demand through Danfoss Learning portal. For more information, register in our support section by following the link or find the overview of available relevant trainings in the table below.

DOs and DON’Ts for Indoor Electric Heating

DOs and DON’Ts for Indoor Electric Heating

Electric Heating is an energy-efficient and environmentally friendly floor heating solution. You can use it for either newly constructed or renovated homes.

Case stories

near- zero energy

Energy-efficient heating solution for near-zero energy housing complex

For decades, many have considered electricity to be an inefficient heating source, associating it with high energy bills and pollution. However, times are changing. Now, the combination of electric floor heating and solar panels are an energy-efficient option for homeowners. Yes, the future is indeed electric, as this case from Koblenz, Germany shows.

Coburg’s First Passive House

Coburg’s First Passive House, Victoria Australia

Home By Hutt, Melbourne Design Studios, and Grand Designs Australia designed and built the first Passive Home in the humble suburb of Coburg, Melbourne. 

Related applications

  • if (isSmallPicture) { ; } else if (isBigColumns) { } else { }
    Electric floor heating

    Electric underfloor heating for all types of floors

    Electric heating is an energy-efficient and environmentally friendly floor heating solution. It is flexible for new build homes and renovations for both wet and dry installation.​

Related solutions

Contact us

For further information, please contact us for technical support