Warmup® Loose Wire System

From £111.52

Warmup loose wire kits can be combined to suit the area you need to heat. When installing two or more heaters, begin by looking at the sizing chart below to ensure that you have the proper number and size of heaters for the area you wish to heat.

Area Heated

Product Code Wattage
1.5 to 2.4m² DWS300 300W
2.5 to 3.4m²  DWS400 400W
3.5 to 4.4m² DWS600 600W
4.5 to 5.9m² DWS800 800W
6.0 to 6.9m² DWS600 + DWS400 1000W
7.0 to 8.4m² 2 x DWS600 1200W
8.5 to 9.9m² DWS800 + DWS400 1400W
10 to 11.4m² 2 x DWS800 1600W
11.5 to 12.9m² DWS800 + DWS600 + DWS400 1800W
13.0 to 14.4m² 2 x DWS800 + DWS400 2000W
14.5 to 15.9m² 2 x DWS800 + DWS600 2200W
16.0 to 17.4m² 3 x DWS800 2400W
17.5 to 18.9m² 2 x DWS800 + DWS600 + DWS400 2600W
19.0 to 20.4m² 3 x DWS800 + DWS400 2800W
20.5 to 21.9m² 3 x DWS800 + DWS600 3000W
22.0 to 25m² 4 x DWS800 3200W

Loose wire kit contains

  • Ultra-thin, 1.8mm cable multistrand. The dual-core heating cable is double insulated with an advanced fluoropolymer making it exceptionally durable and easy to tile over
  • Primer (for use of wooden subfloors)
  • Tape
  • Foam Roller
  • Installation manual

Please note: Before beginning the installation of your Loose Wire heating system, please double check that you have the correct size and number of heaters for your project.

Technical data

  • Operating voltage 230V: 50Hz
  • Cable thickness 1.8 mm
  • Inner / Outer insualtion advanced fluoropolymer (ETFE)
  • Average output rating 150 W/m²
  • Cold tail length 3m
  • Approvals EUFH heating mat approvals EUFH heating mat approvals

What Project is the Loose Wire System Designed For?

The Warmup Loose Wire System (also known as DWSWire) is designed to suit irregularly shaped rooms and rooms with many fixtures, since the heating cable can simply be maneuvered on the subfloor around fixtures with ease.

The spacing of the cable can be adjusted to your requirements in the desired power output and to the layout of the room you are installing the system in. The Loose Wire is ideal for installation under ceramic or natural stone tiled flooring.

The Warmup Loose Wire System is suitable for all applications providing primary or secondary heating in all rooms or projects that adhere to Building Regulations.

Loose Wire is easy to install because it comes in the form of a kit. The kit contains all the necessary elements for the installation of the Loose Wire System.

More Information
Weight 1.800000
Country of Manufacture United Kingdom
Warranty 25 Years


Warmup thousands of products in the UK, this means we can get them to you in a matter of days.

Enquire here to see if your Warmup product is a stocked item.



We offer Free Standard Delivery on all orders over £500 to UK mainland delivery addresses, remote areas may be subject to additonal delivery charges.

Shipping below £500 varies by product and brand, to check shipping prices simply add the product to your basket.

We offer Free Standard Delivery on all orders over £500 to UK mainland delivery addresses.

Note some exclusions apply, please email enquiries@drawabath.co.uk and we will be happy to quote for deliveries to remote areas based on the goods required.

Shipping below £500 varies by product and brand, to check shipping prices simply add the product to your basket.

Should you require a split delivery, additional delivery charges may apply.

Delivery times vary by manufacture, please see the 'Lead Times' tab on the product page for estimated lead times.

Need it sooner? Drop us a line to enquiries@drawabath.co.uk and we will do our best to make it happen.

We recommend you do not arrange a start date with your installer until all your goods have been delivered and checked to ensure they are correct and show no signs of damage.

Standard delivery times are 8.00am to 5.00pm Monday to Friday.

We are happy to quote for enhanced delivery based on the goods required, please email enquiries@drawabath.co.uk

Standard - FREE
Next Day - POA
Day Specific - POA
Saturday - POA  

If you happen to reside in an area that is considered to be 'remote' by our couriers, you may incur additional delivery charges.

Remote Areas:
Channel Islands
Isle of Man
Scilly Isles
Isle of Wight Highlands
Northern Ireland
Scotland Offshore

If you are unsure if you live in a remote area or not, please contact our customer services team at enquiries@drawabath.co.uk

Small items such as Taps and Accessories will be delivered by courier, the courier will contact you ahead of delivery, should the delivery date not be convenient you will have the option to amend the date.

Large items such as Baths, Ceramics, Furniture, Shower Trays and Enclosures will be delivered on a pre-arranged, palletised, kerbside delivery service and therefore your assistance will be required to take the items into your property.

The delivery driver may take the pallet away for you, please note this is at the driver's discretion, if this is not possible you will have to make provision to dispose of the pallet.

We understand it is not always possible to inspect all your goods upon delivery, if this is the case please sign as unchecked otherwise the delivery is deemed as complete and undamaged.

Should you note visibal damage upon delivery please inspect the products further, should you accept the delivery photograpic evidence would assist with any claims against the haulier. 

Please call us on 0151 459 6777 or email enquiries@drawabath.co.uk

You are within your rights to refuse delivery of the order if it isn’t right.

As soon as your order arrives, please check carefully for missing items and also damage.

If you notice either, please call us on 0151 459 6777 or email enquiries@drawabath.co.uk

You are within your rights to refuse delivery of the order if it isn’t right.

Please ensure someone is at home on the agreed day of delivery.

If we cannot deliver the items a redelivery fee will apply. 

You can collect your order from our warehouse in Brombrough, Wirral, CH62 3NX.

Please call or email upon placing an order to advise you wish to collect, otherwise goods will be delivered.


It’s important to us that you are happy with your Draw a Bath purchase.

If you are not totally satisfied you can return it within 14 days and we will give you a full refund by the same method as your original payment.

Please note any made to order items such as Furniture to size and finish are non-returnable.

All items (apart from custom orders) can be returned up to 14 days from delivery.

Returns must be authorised, so please call us on 0151 459 6777 or email enquires@drawabath.co.uk and we will happily guide you through the process.

Please note, we will only accept products if they are undamaged, unused and in their original packaging.

The cost of return is your responsibility and we suggest that any return is covered with suitable insurance and proof of sending.

Draw a Bath,
Unit 8 The Gateway,
Off Rankin Way,
CH62 3NX

We will refund your money after items have been returned and inspected for resale.

For more on how this works, see our Terms and Conditions.

Please note that we cannot accept returns or exchanges for products that have been used, installed, or made-to-order.

In order for your return to be accepted, please ensure items are packaged as they were sent out, and that they are in a resalable condition.

Warmup® Loose Wire System