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Electric Underfloor Heating for Timber Floors

Shop all Electric Underfloor Heating

At Element Shop we stock Harmoni smartmat 100W which provides electric underfloor heating for timber based floors. Choose from a variety of lengths or transform your mat into a kit by adding a thermostat and fixing kit.

VideosLifetime Warranty
Electric Underfloor Heating for Timber Floors
Electric Underfloor Heating for Timber Floors
Electric Underfloor Heating for Timber Floors
Electric Underfloor Heating for Timber Floors
Electric Underfloor Heating for Timber Floors
Electric Underfloor Heating for Timber Floors
Product CodeAreaWattageMat lengthPriceStockQty
Harmoni - SmartMat 100w/m² - 0.5m² 100w Underfloor Heating MatHMMAT100-0.5
QF #: 16232
0.5 m²
50 W
1 m
ex VATinc VAT
Out of Stock
Due in 13 May
Area0.5 m²
Wattage50 W
Mat length1 m
Harmoni - SmartMat 100w/m² - 1.0m² 100w Underfloor Heating MatHMMAT100-1.0
QF #: 16233
1 m²
100 W
2 m
ex VATinc VAT
Out of Stock
Due in soon
Area1 m²
Wattage100 W
Mat length2 m
Harmoni - SmartMat 100w/m² - 1.5m² 150w Underfloor Heating MatHMMAT100-1.5
QF #: 16234
1.5 m²
150 W
3 m
ex VATinc VAT
Out of Stock
Due in 13 May
Area1.5 m²
Wattage150 W
Mat length3 m
Harmoni - SmartMat 100w/m² - 2.0m² 200w Underfloor Heating MatHMMAT100-2.0
QF #: 16235
2 m²
200 W
4 m
ex VATinc VAT
Area2 m²
Wattage200 W
Mat length4 m
Harmoni - SmartMat 100w/m² - 2.5m² 250w Underfloor Heating MatHMMAT100-2.5
QF #: 16236
2.5 m²
250 W
5 m
ex VATinc VAT
Area2.5 m²
Wattage250 W
Mat length5 m
Harmoni - SmartMat 100w/m² - 3.0m² 300w Underfloor Heating MatHMMAT100-3.0
QF #: 16237
3 m²
300 W
6 m
ex VATinc VAT
Area3 m²
Wattage300 W
Mat length6 m
Harmoni - SmartMat 100w/m² - 3.5m² 350w Underfloor Heating MatHMMAT100-3.5
QF #: 16238
3.5 m²
350 W
7 m
ex VATinc VAT
Area3.5 m²
Wattage350 W
Mat length7 m
Harmoni - SmartMat 100w/m² - 4.0m² 400w Underfloor Heating MatHMMAT100-4.0
QF #: 16239
4 m²
400 W
8 m
ex VATinc VAT
Area4 m²
Wattage400 W
Mat length8 m
Harmoni - SmartMat 100w/m² - 5.0m² 500w Underfloor Heating MatHMMAT100-5.0
QF #: 16240
5 m²
500 W
10 m
ex VATinc VAT
Area5 m²
Wattage500 W
Mat length10 m
Harmoni - SmartMat 100w/m² - 6.0m² 600w Underfloor Heating MatHMMAT100-6.0
QF #: 16241
6 m²
600 W
12 m
ex VATinc VAT
Area6 m²
Wattage600 W
Mat length12 m
Harmoni - SmartMat 100w/m² - 7.0m² 700w Underfloor Heating MatHMMAT100-7.0
QF #: 16242
7 m²
700 W
14 m
ex VATinc VAT
Area7 m²
Wattage700 W
Mat length14 m
Harmoni - SmartMat 100w/m² - 8.0m² 800w Underfloor Heating MatHMMAT100-8.0
QF #: 16243
8 m²
800 W
16 m
ex VATinc VAT
Area8 m²
Wattage800 W
Mat length16 m
Harmoni - SmartMat 100w/m² - 9.0m² 900w Underfloor Heating MatHMMAT100-9.0
QF #: 16244
9 m²
900 W
18 m
ex VATinc VAT
Area9 m²
Wattage900 W
Mat length18 m
Harmoni - SmartMat 100w/m² - 10.0m² 1000w Underfloor Heating MatHMMAT100-10.0
QF #: 16245
10 m²
1000 W
20 m
ex VATinc VAT
Area10 m²
Wattage1000 W
Mat length20 m
Harmoni - SmartMat 100w/m² - 12.0m² 1200w Underfloor Heating MatHMMAT100-12.0
QF #: 16246
12 m²
1200 W
24 m
ex VATinc VAT
Area12 m²
Wattage1200 W
Mat length24 m
Harmoni - SmartMat 100w/m² - 13.0m² 1300w Underfloor Heating MatHMMAT100-13.0
QF #: 8877
13 m²
1300 W
26 m
ex VATinc VAT
Area13 m²
Wattage1300 W
Mat length26 m
Harmoni SmartMat 100w/m² - 14.0m² 1400w Underfloor Heating MatHMMAT100-14.0
QF #: 8878
14 m²
1400 W
28 m
ex VATinc VAT
Area14 m²
Wattage1400 W
Mat length28 m
Harmoni - SmartMat 100w/m² - 15.0m² 1500w Underfloor Heating MatHMMAT100-15.0
QF #: 8879
15 m²
1500 W
30 m
ex VATinc VAT
Area15 m²
Wattage1500 W
Mat length30 m
Harmoni - SmartMat 100w/m² - 16.0m² 1600w Underfloor Heating MatHMMAT100-16.0
QF #: 8880
16 m²
1600 W
32 m
ex VATinc VAT
Area16 m²
Wattage1600 W
Mat length32 m
Harmoni - SmartMat 100w/m² - 17.0m² 1700w Underfloor Heating MatHMMAT100-17.0
QF #: 8881
17 m²
1700 W
34 m
ex VATinc VAT
Area17 m²
Wattage1700 W
Mat length34 m
Harmoni - SmartMat 100w/m² - 18.0m² 1800w Underfloor Heating MatHMMAT100-18.0
QF #: 8882
18 m²
1800 W
36 m
ex VATinc VAT
Area18 m²
Wattage1800 W
Mat length36 m
Harmoni SmartMat 100w/m² - 19.0m² 1900w Underfloor Heating MatHMMAT100-19.0
QF #: 8883
19 m²
1900 W
38 m
ex VATinc VAT
Area19 m²
Wattage1900 W
Mat length38 m
Harmoni - SmartMat 100w/m² - 20.0m² 2000w Underfloor Heating MatHMMAT100-20.0
QF #: 8884
20 m²
2000 W
40 m
ex VATinc VAT
Area20 m²
Wattage2000 W
Mat length40 m
Harmoni SmartMat 100w/m² - 21.0m² 2100w Underfloor Heating MatHMMAT100-21.0
QF #: 18777
21 m²
2100 W
42 m
ex VATinc VAT
Area21 m²
Wattage2100 W
Mat length42 m
Harmoni SmartMat 100w/m² - 23.0m² 2300w Underfloor Heating MatHMMAT100-23.0
QF #: 8886
23 m²
2300 W
46 m
ex VATinc VAT
Area23 m²
Wattage2300 W
Mat length46 m
Harmoni - SmartMat 100w/m² - 24.0m² 2400w Underfloor Heating MatHMMAT100-24.0
QF #: 8887
24 m²
2400 W
48 m
ex VATinc VAT
Area24 m²
Wattage2400 W
Mat length48 m
Harmoni SmartMat 100w/m² - 25.0m² 2500w Underfloor Heating MatHMMAT100-25.0
QF #: 8888
25 m²
2500 W
48 m
ex VATinc VAT
Area25 m²
Wattage2500 W
Mat length48 m
Harmoni - SmartMat 100w/m² - 26.0m² 2600w Underfloor Heating MatHMMAT100-26.0
QF #: 8889
26 m²
2600 W
52 m
ex VATinc VAT
Area26 m²
Wattage2600 W
Mat length52 m
Harmoni - SmartMat 100w/m² - 27.0m² 2700w Underfloor Heating MatHMMAT100-27.0
QF #: 8890
27 m²
2700 W
54 m
ex VATinc VAT
Area27 m²
Wattage2700 W
Mat length54 m
Harmoni - SmartMat 100w/m² - 28.0m² 2800w Underfloor Heating MatHMMAT100-28.0
QF #: 8891
28 m²
2800 W
56 m
ex VATinc VAT
Area28 m²
Wattage2800 W
Mat length56 m
Harmoni SmartMat 100w/m² - 29.0m² 2900w Underfloor Heating MatHMMAT100-29.0
QF #: 8892
29 m²
2900 W
58 m
ex VATinc VAT
Area29 m²
Wattage2900 W
Mat length58 m
Harmoni SmartMat 100w/m² - 30.0m² 3000w Underfloor Heating MatHMMAT100-30.0
QF #: 8893
30 m²
3000 W
60 m
ex VATinc VAT
Area30 m²
Wattage3000 W
Mat length60 m
Harmoni Pro-E White Wi-Fi Thermostat - 16 AmpPRO-E-W-16
QF #: 22428
ex VATinc VAT
Harmoni Pro-E Black Wi-Fi Thermostat - 16 AmpPRO-E-B-16
QF #: 22430
ex VATinc VAT
Harmoni Touch-E White Wi-Fi Thermostat - 16 AmpTOUCH-W-16
QF #: 22432
ex VATinc VAT
Harmoni Touch-E Black Wi-Fi Thermostat - 16 AmpTOUCH-B-16
QF #: 22433
ex VATinc VAT
Harmoni 25 Programmable Thermostat140G0052
QF #: 8298
ex VATinc VAT

Need Help? Free Design Service

Call 01473 559079 or email us for a bespoke design service for your underfloor heating project – FREE

Electric Underfloor Heating for Timber Floors

Our Harmoni smartmat 100W has been designed to be used on a range of timber based floors such as suspended timber floors, timber joists or floorboards. The mats themselves use an ultra-thin cable which then provide an even heat distribution across your floor surface. For all sub floors constructed of wood, this is the heating mat most suitable for your installation. They can be used with a variety of floor covering such as carpet, vinyl, and tiles which includes ceramic, marble, limestone, and slate.

If you are looking for electric underfloor heating for laminate and solid wood, you will need to use foils which have been created to be used under these types of flooring systems. For any new build projects, heating cable would be the best system to use.

Underfloor heating for timber floors

Our Range Of Products

Our mats are all 0.5 metres wide, and lengths are available starting 1 metre long which covers an area of 0.5m². The lengths of the mats go up in 1 metre increments up to 4m, and then 2m increments up to 30m. If your floor surface is larger than 15m², you can combine different sizes to get the final size you need. Each of our underfloor heating mats features a self-adhesive mesh, an ultra-thin heating cable, and twin conductor heating cables. They are suitable for most wooden sub-floors and have an output of 100w/m². With a 100% aluminium earth sheath for extra safety, there won’t be much height added to your overall floor height as the cable thickness is only 3mm. With an operating voltage of 230/240v it also has a 3m cold tail connection lead.

Electric Underfloor Heating Kits

With our range of products, it’s quite easy for you to create your owns kits. Simply select the size of mat you require, add a thermostat, and then add the optional fixing kit. This makes up a full electric underfloor heating kit and contains everything you need to install your heating mats. All of this can be done on the product page when adding the product to your basket.

Lifetime Warranty

We are proud to offer a premium electric underfloor heating range that offers unbeatable value. All Harmoni mats, foils & cables are guaranteed against manufacturer defects for the lifetime of the initial floor covering. This means that they have a lifetime warranty plus an installation replacement warranty. All underfloor mats, foils and cables are safety approved products and have been verified with independent S Mark & Fimko. We offer a free design service and a fully detailed quotation, along with free next day delivery or local collection.

Installer Warranty

In an ideal world, floor surfaces are laid as soon as the previous step has been completed but delays can happen which means leaving the mats exposed. Accidents can happen and mats can get damaged before the floor covering is added which is why we offer an installer warranty. This guarantees that if you damage your Harmoni mat, foil or cable before the finished floor surface is installed, we will replace it with an equivalent product free of charge.

Why use Element Shop?

Element Shop have been trading now for over 15 years and have established ourselves as one of the leading providers of underfloor heating for both wet and electric systems in the UK. We continue to expand our range of products based on our customers feedback and have developed a catalogue of products that is perfectly suitable to plumbers and electricians who install heating products. All products have a minimum of 1 year warranty, but most of our products will carry more, some which include lifetime guarantees. We offer free next day delivery service to most of the UK, no matter how much or how little you spend, and we also offer a no quibble 14-day return policy. If you change your mind, simply return your product in its original condition and we will issue a refund. Moreover, we offer price match promise so we guarantee that if you do find one of our products cheaper elsewhere, we will match the price.

If you’d like to find out more about our products, or would like to enquire about stock, you can call one of the team on 01473 559079 who will be on hand to help with your query.

Delivery Times

Most of our products are kept in stock, in our warehouse in Ipswich. This means we can offer free next day delivery to our customers. Each range and individual product, state their estimated delivery time during checkout. We deliver to most UK locations with free, next day delivery as standard. To discuss delivery details, call us on 01473 559079.

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Product reviews

4.8100% Positive (6 reviews)

Ratings based on data collected by third party reviewing platform.

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John Wood
28 November 2023 08:17

Very smart looking . Not fitted yet

Great service and helpful advice. The kit was packaged well and has clear instructions. Prompt delivery.

Thank you so much for your 5-star review! We will share this with the team to let them know to keep up the amazing work.


Jon Ellis, Huddersfield
11 November 2023 14:06

Good quality easy to use easy to install

All questions answered by phone, easy to use website showing stock availability
God prices and fast delivery

Thank you so much for taking the time to leave us a 5 star rating - it's much appreciated!


Paul Davis
5 October 2023 21:19

easy to lay just take the readings fill out the form job done

I have used the element shop for underfloor heating for years and have never been let down, the service is top quality they are friendly and helpful. If you order in time then you get it the next day, but you are kept updated with the delivery so you know when it will arrive

Seeing that you had a 5-Star experience is the best thing we could hope for! Your review means a lot to us. Thank you for choosing Heater Shop. We look forward to serving you for many years to come!


Louis Charalambous
15 June 2023 09:21

Connect to your app 2 rooms in one app.

Great fast delivery

Thanks so much for giving us your take on how we are doing. We're glad that customers like you are having a great experience at Heater Shop.


Trusted Customer
22 March 2021 14:13

Best electric underfloor heating mats on the market. no one else even comes close. Have used before and will use again, my clients love them!

Great service, excellent product and fast delivery! Would recommend every time for underfloor heating, no one else comes close!

Thank you for your positive feedback. We appreciate your business with us.


Ceramica tiling services, Nottingham
13 July 2019 22:23

Comes in the kit and looks good for the price

Had a few heat mats of these guys, and quite a few customers have gone direct now as well. Very good service, the staff are helpful and delivery is quick. This is the only place I get underfloor heating from now

Thank you very much for this really great feedback.