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Warmup Underfloor Heating Cable Kit

From £103.99
Now £103.99
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
Warmup Underfloor Heating Cable Kit
From £103.99
Now £103.99

Need expert advice?

Need help or product advice? Call 01799 524730

For delivery on Thursday

When ordered before 4pm (On weekdays)

The Warmup Underfloor Heating Cable Kit provides a versatile and efficient heating solution for your home. Whether you have irregularly shaped rooms or rooms with many fixtures, the Warmup Loose Wire System (also known as DWSWire) is designed to suit your needs. The heating cable can be easily maneuvered on the subfloor, allowing for seamless installation around fixtures with ease.

For irregularly shaped rooms, the spacing of the cable can be adjusted to your requirements, ensuring the desired power output and accommodating the layout of the room. The Loose Wire System is ideal for installation under ceramic or natural stone tiled flooring, providing luxurious warmth throughout your space.

If you have regularly shaped rooms, the Sticky Mat system offers a quick and precise installation alternative to the Loose Wire System. For those seeking an electric underfloor heating system that also protects tiles, the DCM-PRO Heated Decoupling Mat is the practical solution. Additionally, for floor finishes other than tiles, the Foil Heater System is ideal, as it eliminates the need for flexible tile adhesive or self-levelling compound, providing a completely dry structure for the installation of carpet or laminate flooring.

Qualities Of The Loose Wire Heating Cable

The heating cable in the Warmup Underfloor Heating Cable Kit is impressively thin, measuring only 1.8mm, making it the thinnest on the market. This ensures that it does not significantly raise the floor height. The small cross-section of the heating element allows for installation without the need for a layer of self-levelling screed. Install the Loose Wire System with a tile adhesive layer under tiles or with a self-levelling compound under other floor finishes.

One of the major benefits of installing the Loose Wire System is that it does not require a self-levelling screed, saving you time and additional costs associated with the drying process. Once the cable is laid down, the floor finish can be installed directly on top of it.

The Warmup Loose Wire System is suitable for all applications, providing primary or secondary heating in any room or project that adheres to Building Regulations.

Loose Wire Underfloor Heating Kit

The Warmup Underfloor Heating Cable Kit comes complete with everything you need for a hassle-free installation of the Loose Wire System:

  • Ultra-thin, 1.8mm cable multistrand: The dual-core heating cable is double insulated with an advanced fluoropolymer, ensuring exceptional durability and ease of tiling over it.
  • Primer (for use on wooden subfloors): Prepare your wooden subfloors for optimal adhesion and long-lasting performance.
  • Tape: Secure the heating cable in place during installation for a seamless and professional finish.
  • Foam Roller: Effortlessly apply pressure to ensure proper adhesion and eliminate any air pockets.
  • Installation manual: A comprehensive guide to assist you in every step of the installation process, making it easy and straightforward.

Transform your home with the Warmup Underfloor Heating Cable Kit and enjoy luxurious warmth underfoot. Experience the ultimate comfort and energy efficiency while adding a touch of sophistication to your space. Create an inviting environment where underfloor heating meets convenience and reliability.


  • 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 Safety Net Installation guarantee
Heater construction Dual core earth screened cable
Operating voltage 220 - 240V, 50Hz
Cable thickness 1.8mm
Inner insulation ECTFE (advanced fluoropolymers)
Outer insulation ECTFE (Advanced Fluoropolymers)
Average output rating 150 W/m2
Cold tail length (connection lead) 3m
Approvals ASTA BEAB component, KEMA and GS
Area m2 Heaters required Spacing
1.5 - 1.8 DWS300 70
1.9 - 2.4 DWS300 90
2.5 - 2.7 DWS400 70
2.8 - 3.0 DWS400 80
3.1 - 3.4 DWS400 90
3.5 - 3.8 DWS600 70
3.9 - 4.1 DWS600 80
4.2 - 4.4 DWS600 90
4.5 - 5.0 DWS800 70
5.1 - 5.6 DWS800 80
5.7 - 5.9 DWS800 90
6.0 - 6.4 DWS400 + DWS600 80
6.5 - 6.9 DWS400 + DWS600 90
7.0 - 7.7 2 x DWS600 80
Area m2 Heaters required Spacing
7.8 - 8.4 2x DWS600 90
8.5 - 9.2 DWS600 + DWS800 80
9.3 - 9.9 DWS600 + DWS800 90
10.0 - 11.1 2 x DWS800 80
11.2 - 11.4 2 x DWS800 90
11.5 - 12.2 DWS400 + DWS600 + DWS800 80
12.3 - 12.9 DWS400 + DWS600 + DWS800 90
13.0 - 13.7 2 x DWS800 + DWS400 80
13.8 - 14.4 2 x DWS800 + DWS400 90
14.5 - 15.2 2 x DWS800 + DWS600 80
15.3 - 15.9 2 x DWS800 + DWS600 90
16.0 - 16.7 3 x DWS800 80
16.8 - 17.4 3 x DWS800 90

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.

  • 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.
  • 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.
  • Follow the instructions supplied with your thermostat. Your underfloor heating system will not function without a correctly installed thermostat.
  • Check if the heating wire is fully taped and secured. Grout the floor as soon as possible as per the manufacturer's' 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.

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    Our customer support is available Monday to Friday 7am-6pm.

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    Free delivery on all orders

    At Ambient Underfloor Heating, 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 orders over £19.99 or next working day delivery for a fixed price of £4.99.

    • 2-3 working days delivery, order over £19.99 - FREE (£4.99 if under £19.99)
    • Next working day - £4.99 (Order before 4pm Monday - Friday)
    • Next working day before 10.30am - £14.99 (Order before 4pm Monday - Friday)
    • Saturday delivery - £29.99 (Order before 4pm Friday)
    30 days returns policy

    At Ambient Underfloor Heating, our customers have 30 days to upgrade, replace or refund their orders.


    At Ambient Underfloor Heating, we want to ensure you are happy with every purchase you make. If you have any issues with your chosen product, whether damaged, faulty or simply an unwanted item, you can simply return what you bought for a refund.


    We take great care in the delivery of all of our products, however, in the event of your delivery arriving damaged or if you notice a manufacturing fault of any kind within 48 hours of delivery, you're within your rights to a replacement.


    Within 14 days of purchasing from us, you are eligible to upgrade if you deem you want something a little better. Simply send it back to us brand new and we'll happily assist you with an upgrade to your order.

    Lifetime warranty

    At Ambient Underfloor Heating, we are committed to providing our customers with high-quality products and outstanding customer service. That's why we offer a comprehensive warranty on all of our underfloor heating products, with a lifetime warranty for our signature kits.

    Our warranties are designed to give you peace of mind and ensure that your underfloor heating system operates reliably for years to come.

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