Devi Buyer's Guide — TradieCart
Devi (by Danfoss) is a global leader in electric underfloor heating with over 80 years of Danish engineering. TradieCart stocks the full Devi range — heating mats, in-screed cables, outdoor cables, thermostats, and accessories — all backed by an industry-leading 20-year full service warranty.
Product Range
| Product | Best For |
|---|---|
| DEVIcomfort 150T Kits | Value undertile heating — 150 W/m² twin-conductor mat with PVC outer sheath and self-adhesive mesh. The cost-effective choice for standard bathroom, ensuite, and living area renovations. Same output as DEVImat at a lower price point. Available 0.5–12m² with your choice of thermostat. |
| DEVImat 150T Kits | Premium undertile heating — 150 W/m² twin-conductor mat with PVDF sheath rated to 115°C and 360° foil screen. The most durable option when you need maximum heat resistance. Upgrade from DEVIcomfort for high-demand installations. Available 0.5–12m². |
| DEVIheat 150S Kits | Ultra-thin undertile heating — at just 2.5mm, Devi's thinnest mat. Single conductor with two cold tails, ideal where minimal floor height build-up is critical. Available 0.5–10m². |
| DEVIflex 18T Kits | In-screed floor heating — 18 W/m twin-conductor cable for embedding in concrete screeds. Also suits pipe tracing and cold store applications. Available in 7.3–170m lengths (0.7–17m² coverage). |
| DEVIsnow 30T Cables | Outdoor and in-slab heating — 30 W/m UV-stable cable for driveways, walkways, roofs, gutters, and vineyard frost protection. Available in 5–140m lengths (1–27m² coverage). |
| DEVIhotwatt 45/55 | Hot water pipe maintenance — self-limiting cables that adjust output based on ambient temperature. Cut to length on site. PVC-free. Sold per metre. |
| DEVIreg Touch | Premium thermostat — 2" touchscreen, programmable timer, energy-saving programs, room + floor sensor. Available in Pure White, Polar White, and Pure Black. 5-year warranty. |
| DEVIreg Basic | Smart thermostat — Bluetooth-enabled with app control, setup wizard, and 7-day programming. Best balance of features and value. 2-year warranty. |
| DEVIreg Room / DEVIreg 330 | Simple thermostats — DEVIreg Room for basic indoor floor control; DEVIreg 330 for outdoor snow-melting systems (pairs with DEVIsnow 30T). 2-year warranty. |
| Accessories | Floor sensor cables (3m), surround plates (Black, Polar White, Pure White), and alarm continuity testers for pre-installation cable testing. |
All heating mats deliver 150 W/m² at 230V. Kits include thermostat, floor sensor, conduit, surround plate, continuity tester, and installation manual.
Quick Recommendation Guide
- Renovating a bathroom or ensuite on a budget → DEVIcomfort 150T Kit with DEVIreg Basic — same 150 W/m² warmth as the premium range at a lower cost, with Bluetooth app control for scheduling
- Premium renovation with maximum durability → DEVImat 150T Kit with DEVIreg Touch — PVDF sheath handles higher temperatures, touchscreen thermostat gives full programmable control
- Tight floor height — can't afford to raise the floor → DEVIheat 150S Kit — at 2.5mm it's the thinnest mat in the range, adding virtually no height under tiles
- New concrete slab or screed pour → DEVIflex 18T Kit — designed to embed directly in screed at 100mm spacing for even heat distribution
- Ice and frost protection on driveways or walkways → DEVIsnow 30T Cable + DEVIreg 330 thermostat — UV-stable outdoor cable rated for ground, roof, and gutter applications
Key Features & Benefits
- 20-year full service warranty — covers replacement of cables/mats plus reimbursement of installation and material costs
- 80+ years of Danish engineering — Devi by Danfoss, trusted globally since 1942
- Self-adhesive mesh — peel and stick installation on all mats, saving time on site
- 150 W/m² output — consistent, efficient warmth across the entire mat range
- Complete kit packages — everything you need in one box: mat or cable, thermostat, sensor, and accessories
- Environmental Product Declarations (EPDs) — 90% of Devi products have verified environmental impact data
Common Questions
Should I choose DEVImat 150T or DEVIcomfort 150T? — Both deliver 150 W/m² on self-adhesive mesh. DEVImat has a PVDF outer sheath rated to 115°C — the more durable premium option. DEVIcomfort uses a PVC sheath rated to 85°C, perfectly adequate for standard residential use and more cost-effective. For most bathroom renovations, DEVIcomfort is the smart choice.
What's the difference between heating mats and cables? — Mats (DEVImat, DEVIcomfort, DEVIheat) are pre-spaced cables on self-adhesive mesh — they roll out directly under tiles for fast installation. Cables (DEVIflex 18T) are loose and get embedded in a concrete screed, giving more flexibility on spacing and coverage for new builds.
Which thermostat should I get? — DEVIreg Basic gives you Bluetooth app control and 7-day programming at the best value. DEVIreg Touch adds a 2" touchscreen for wall-mounted control. DEVIreg Room is the simplest option for basic temperature control. All handle up to 16A (3,680W).
What does the 20-year DEVIwarranty cover? — It covers not just cable and mat replacement, but also reimbursement of installation and material costs for the full 20 years. Thermostats carry a separate 2 or 5-year warranty depending on model.
Can I cut the heating mat to fit my room? — You can cut the mesh between cables to turn corners and fit around obstacles, but never cut the heating cable itself. Measure your room and choose the closest mat size on the TradieCart website.
Can Devi products be used outdoors? — DEVIsnow 30T cables are specifically designed for outdoor use — UV-stable and rated for driveways, walkways, roofs, and gutters. Pair them with a DEVIreg 330 thermostat for automatic temperature-based control.
Why Choose Devi?
- Backed by Danfoss — 80+ years of electric heating innovation from Denmark
- Industry-leading 20-year full service warranty on all mats and cables
- Same-day Metro Melbourne dispatch available on TradieCart
- Complete range from budget-friendly DEVIcomfort to premium DEVImat — the right product for every job and budget