The world's largest supplier of underfloor heating

Warmup Underfloor Heating Cable Kit

Warmup Underfloor Heating Cable Kit

RRP: £166.79£119.99

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Warmup loose wire system provides the best flexibility of layout so are ideal for awkward shaped or smaller floor areas, they are usually installed beneath a tiled or stone floor finish but can be used beneath Vinyls when embedded within a suitable levelling compound.

Choose your cable system to cover around 95% of your open floor area.

You can also choose your thermostat from the thermostat choice menu.

Warm loose wire systems are 2mm in diameter, ultra-thin, dual-core heating element. The small cross-section of our element allows it to be installed in a matter of hours without raising floor levels.

There is no need to dig up the floor and no need to mix concrete. Simply fix the heating element to the subfloor, tile straight over and say goodbye to cold feet for good!

Please ensure all Safety Guidelines are adhered to during and after installation of this product.


  • Ultra-thin dual-core heating element wont raise floor levels
  • Toughest and thinnest wire you can buy: 2mm, multi-strand core, double-insulated using advanced fluoropolymers
  • ASTA BEAB approved heating element meets the highest safety standards
  • Quick installation Single connection lead for fewer steps
  • Available in both 120V and 240V
  • Approvals: ASTA BEAB Component, CERTIF, KEMA, GS
  • Lifetime warranty
  • Warmup SafetyNet Installation guarantee

The Warmup Loose Wire System has been designed so that installation is quick and easy. However, as with all electrical underfloor heating systems, certain procedures must be followed. Ensure you have read all technical specifications and you are happy to fit Warmup Loose Wire Underfloor Heating to your room. To install your Warmup Underfloor Heating system follow these 4 steps. Please note that this is a summary.

  1. Smooth, clean and dry the subfloor surface. Paint the floor with Warmup Primer (you do not need to use primer if installing on an insulated tile back board). The light green colour of the primer will change to a dark green once dry. Avoid traffic once primer is down.
  2. Calculate in square metres the size of the area to be heated. Use the Sizing Guide (found in the back of the Installation Manual) to correctly fit your heating wire into the space provided. Layout the heating wire in parallel lines. Begin at the start point and in U shapes go to the furthest point. Using the wire spacing markings as tape down points, secure the heating wire to the floor with adhesive tape. Once completed, tape down the entire length of the heating wire, positioning the tape centrally over the wire.
  3. Follow the instructions supplied with your thermostat. Your underfloor heating system will not function without a correctly installed thermostat.
  4. Check if the heating wire is fully taped and secured. Grout the floor as soon as possible as per the manufacturers’ instructions. Tile as normal, taking care not to damage or dislodge the heating wire.

The heater can be installed without the need for specialist tools or expertise (in accordance with local building code). It is important, however, that the Warmup Thermostat be connected by a qualified electrician.

Heater constructionDual core earth screened cable
Operating voltage220 - 240V, 50Hz
Cable thickness2mm
Inner insulationECTFE (advanced fluoropolymers)
Outer insulationECTFE (Advanced Fluoropolymers)
Average output rating150 W/m2
Cold tail length (connection lead)3m
ApprovalsASTA BEAB component, KEMA and GS
Area m2Heaters requiredSpacing
1.5 - 1.8DWS30070
1.9 - 2.4DWS30090
2.5 - 2.7DWS40070
2.8 - 3.0DWS40080
3.1 - 3.4DWS40090
3.5 - 3.8DWS60070
3.9 - 4.1DWS60080
4.2 - 4.4DWS60090
4.5 - 5.0DWS80070
5.1 - 5.6DWS80080
5.7 - 5.9DWS80090
6.0 - 6.4DWS400 + DWS60080
6.5 - 6.9DWS400 + DWS60090
7.0 - 7.72 x DWS60080
Area m2Heaters requiredSpacing
7.8 - 8.42x DWS60090
8.5 - 9.2DWS600 + DWS80080
9.3 - 9.9DWS600 + DWS80090
10.0 - 11.12 x DWS80080
11.2 - 11.42 x DWS80090
11.5 - 12.2DWS400 + DWS600 + DWS80080
12.3 - 12.9DWS400 + DWS600 + DWS80090
13.0 - 13.72 x DWS800 + DWS40080
13.8 - 14.42 x DWS800 + DWS40090
14.5 - 15.22 x DWS800 + DWS60080
15.3 - 15.92 x DWS800 + DWS60090
16.0 - 16.73 x DWS80080
16.8 - 17.43 x DWS80090
NameProduct CodePrice
Warmup Underfloor Heating Cable Kit, 1.5 - 2.4m2760£119.99
Warmup Underfloor Heating Cable Kit, 2.5 - 3.4m2766£151.99
Warmup Underfloor Heating Cable Kit, 3.5 - 4.4m2767£191.99
Warmup Underfloor Heating Cable Kit, 4.5 - 5.9m2768£244.00
Warmup Underfloor Heating Cable Kit, 6.0 - 6.9m2769£343.00
Warmup Underfloor Heating Cable Kit, 7.0 - 8.4m2770£382.00
Warmup Underfloor Heating Cable Kit, 8.5 - 9.9m2771£433.00
Warmup Underfloor Heating Cable Kit, 10.0 - 11.4m2761£487.00
Warmup Underfloor Heating Cable Kit, 11.5 - 12.9m2762£584.99
Warmup Underfloor Heating Cable Kit, 13.0 - 14.4m2763£622.00
Warmup Underfloor Heating Cable Kit, 14.5 - 15.9m2764£730.99
Warmup Underfloor Heating Cable Kit, 16.0 - 17.4m2765£757.99

Delivery options

At The Underfloor Heating Store, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.

We're proud to offer a range of delivery options to suit you, including free delivery on all of our orders or next working day delivery for a fixed price of £4.99.

Our delivery options

  • 2-3 Working Days (3-5 working days on wet room and energy efficiency products)
  • FREE
  • Next Working Day
  • £4.99 (order before 4pm, Monday to Friday)
  • Next Working Day Before 10.30am
  • £14.99 (order before 4pm, Monday to Friday)
  • Saturday Delivery
  • £29.99 (order before 4pm on Friday)