Self-limiting heating cables
The self-limiting heating cables for indoors are used for maintenance of the hot water supply and other fluids that need to maintain a certain temperature. The self-limiting capability of the cable ensures that the output increases or decreases according to the surrounding temperature. It ensures hot water in all taps, providing savings compared to a circulatory hot water system.
Heating cable reduces water waste as hot water is immediately supplied.
Protection against Legionella—the system maintains the water supply at the required temperature level and provides appropriate disinfection to suppress the Legionella bacteria.
Lower initial investment of DHW (Domestic Hot Water) system without circulation—appx. 50% less pipes, insulation, valves, and pumps to be installed as no return pipes and insulation are required.
Space saving—no need for return pipe gives more room in service ducts.

The DEVIhotwatt™ (B) / EChotwatt 45/55/70 is a self-limiting heating cable that is used for temperature maintenance of the hot water supply and other fluids that need to maintain a certain temperature. The self-limiting capability of the cable ensures that the output increases or decreases according to ambient temperature. It ensures hot water in all taps and savings when circulation of the whole pipe system is unnecessary.
Features and benefits using self-limiting cables
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Provide appropriate disinfection to suppress the Legionella bacteria
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Reduce water waste as you can get hot water immediately
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50% less pipes, insulation, valves, and pumps to be installed since no return pipes are required
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Heating cables provide power where needed adapting output according to the ambient temperature
Related products
Videos
Electric heating videos on YouTube
You can see all our videos about Electric Heating on a dedicated playlist on YouTube. Follow the link below.

Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Data sheet | Danfoss EChotwatt 45, 55, 70 | English | Multiple | 17 Jul, 2023 | 836.9 KB | |
| Catalog | Danfoss Product catalogue | English | Multiple | 20.8 MB | ||
| Application guide | DEVI Domestic Hot Water Application guide | Romanian, Moldavian, Moldovan | Romania | 26 May, 2022 | 1.1 MB | |
| Application guide | DEVI Domestic Hot Water Application guide | English | Multiple | 03 Mar, 2023 | 7.2 MB | |
| Application guide | DEVI Domestic Hot Water Application guide_v2 | Danish | Denmark | 18 Jun, 2024 | 1.3 MB | |
| Catalog | DEVI Product Catalogue | Spanish, Castilian | Spain | 04 Aug, 2025 | 29.2 MB | |
| Catalog | DEVI Product Catalogue | English | Multiple | 09 Feb, 2026 | 28.3 MB | |
| Catalog | DEVI Product Catalogue | Finnish | Finland | 24 Jun, 2025 | 13.8 MB | |
| Catalog | DEVI Product Catalogue | Norwegian Bokmål | Norway | 06 Aug, 2025 | 26.4 MB | |
| Catalog | DEVI Product Catalogue | Dutch, Flemish | Netherlands | 14 Aug, 2025 | 28.5 MB | |
| Catalog | DEVI Product Catalogue | Greek (modern) | Greece | 20 Oct, 2025 | 29.5 MB | |
| Catalog | DEVI Product Catalogue | Polish | Poland | 25 Sep, 2025 | 28.1 MB | |
| Catalog | DEVI Product Catalogue | Lithuanian | Lithuania | 02 Oct, 2025 | 28.1 MB | |
| Catalog | DEVI Product Catalogue | Croatian | Croatia | 23 Dec, 2025 | 22.9 MB | |
| Catalog | DEVI Product Catalogue | Swedish | Sweden | 29 Dec, 2025 | 25.4 MB | |
| Catalog | DEVI Product Catalogue | German | Austria | 03 Feb, 2026 | 15.5 MB | |
| Catalog | DEVI Product Catalogue | Czech | Czech Republic | 21 Oct, 2025 | 29.2 MB | |
| Catalog | DEVI Product Catalogue | Italian | Italy | 28 Jul, 2025 | 29.2 MB | |
| Catalog | DEVI Product Catalogue | Ukrainian | Ukraine | 16 Jan, 2025 | 13.0 MB | |
| Application guide | Domestic Hot Water Application manual | Chinese | China | 03 Apr, 2025 | 3.8 MB | |
| Application guide | Domestic Hot Water Application manual | English | Multiple | 23 Dec, 2016 | 3.3 MB | |
| Data sheet | EChotwatt 45, 55, 70 | German | Austria | 09 Jul, 2019 | 13.2 MB |
Tools and apps

The Plugin supports your engineering and design journey by making your work faster due to simple functionalities in calculating all lengths, dimensions and product data of cables and mats. It covers all applications within Electric Heating projects: Electric floor heating, Ice & Snow melting systems, Pipe tracing, Cold stores, Sport fields, Vineyards etc.
By utilizing Plugin, you will reduce design time for the project, provide all necessary information for installers in HTML/PDF format: BoM, resistance value check list, warranty list format. It means all project information can be consolidated in one file.
Plugin can be used with AutoCAD 2017-2023.
Warranty
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

Case stories

Suzhou city was founded in 500 BC. is nowadays a major city located in the south-eastern Jiangsu Province of East China, about 100 km (62 mi) northwest of Shanghai. It is a big economic center and local point of trade and commerce, and the second largest city in the province, after its capital Nanjing.
Related applications

Danfoss domestic hot water systems provide everything for the production, storage, hydronic balancing, temperature control and temperature logging for drinking water in non-residential and multi-family residential buildings. The systems established are high performing, provide comfort and hygiene and ensure maximum possible protection against Legionella.
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Contact us
For further information, please contact us for technical support




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