DANFOSS Devi Dünnbett-Set 150 W/m² 2.5 m² (0.5 x 5 m) Electric Underfloor Heating Mat

For renovation and new-build projects where floor height cannot be compromised, the DANFOSS Devi Dünnbett-Set 150 W/m² 2.5 m² (0.5 x 5 m) heating mat delivers a slim, self-adhesive solution that disappears into thin-bed tile adhesive. Unlike bulky cable systems or hydronic loops, this mat adds only a few millimetres of build-up while providing even warmth across the entire tiled surface. The pre-spaced twin conductor cable is fixed to a flexible mesh, so layout is straightforward and the mat stays flat during tiling. With a fixed power density of 150 W/m² and a total output of 375 W, it brings bathrooms, kitchens and utility rooms to a comfortable temperature quickly and efficiently.

Highlights

• Ultra-low profile: fits into standard thin-bed mortar without raising floor height significantly
• Self-adhesive mesh backing simplifies positioning and keeps the mat in place during installation
• Uniform heat distribution thanks to pre-spaced heating cable across the 2.5 m² mat
• Rapid thermal response when embedded in tile adhesive, ideal for intermittent heating
• Twin conductor cable with FEP insulation and PVC outer sheath for durability and safety
• IPX7 ingress protection allows use in wet areas such as showers when installed correctly
• Compatible with common floor coverings laid over tile adhesive: ceramic tile, natural stone, and more
• CE and VDE approved, ensuring compliance with European safety standards

In daily use

The mat is intended for installation beneath tiled floors in bathrooms, shower rooms, kitchens and utility areas. Its 0.5 m width and 5 m length cover 2.5 m² in a single strip, making it easy to plan around fixtures. Once embedded in thin-bed adhesive and connected to a suitable thermostat with a floor sensor, the system maintains a pleasant floor temperature. The 4 m cold lead provides flexibility for connecting to the thermostat, while the mat's flexibility allows it to be cut and turned (following manufacturer instructions) to fit irregular spaces. The low build-up height is particularly valuable in renovation projects where existing floor levels must be preserved.

Full specifications

• Brand: DANFOSS
• Model: 140F0469
• MPN: 140F0469
• EAN: 5703466253403
• Product type: Electric underfloor heating mat
• Series: DEVIcomfort 150T
• Heated area: 2.5 m²
• Mat dimensions (L x W): 5 m x 0.5 m
• Power density: 150 W/m²
• Total power output: 375 W
• Supply voltage: 230 V AC
• Cable type: Twin conductor
• Cable diameter: approx. 4 mm
• Cold lead length: 4 m
• Ingress protection: IPX7
• Conductor insulation: FEP
• Outer sheath material: PVC
• Minimum installation temperature: -5 °C
• Resistance: 141.1 Ω
• Approvals: CE, VDE
• Application: Thin-bed installation under tiles, laminate, wood, vinyl
• Installation: Self-adhesive mesh

Final note

The DANFOSS Devi Dünnbett-Set 150 W/m² 2.5 m² heating mat offers a reliable, low-profile underfloor heating solution that is easy to install and built to last. Its self-adhesive mesh and pre-spaced cable reduce installation time, while the fixed power output ensures predictable performance. Whether you are renovating a bathroom or adding comfort to a kitchen, this mat delivers efficient warmth without compromising floor height.