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Underfloor Heating Mat 100W

Shop all Electric Underfloor Heating

VideosLifetime Warranty
Underfloor Heating Mat 100W
Underfloor Heating Mat 100W
Underfloor Heating Mat 100W
Underfloor Heating Mat 100W
Underfloor Heating Mat 100W
Underfloor Heating Mat 100W
Product CodeAreaMat lengthWattagePriceStockQty
Harmoni - SmartMat 100w/m² - 0.5m² 100w Underfloor Heating MatHMMAT100-0.5
QF #: 16232
0.5 m²
1 m
50 W
ex VATinc VAT
Out of Stock
Due in 13 May
Area0.5 m²
Mat length1 m
Wattage50 W
Harmoni - SmartMat 100w/m² - 1.0m² 100w Underfloor Heating MatHMMAT100-1.0
QF #: 16233
1 m²
2 m
100 W
ex VATinc VAT
Out of Stock
Due in soon
Area1 m²
Mat length2 m
Wattage100 W
Harmoni - SmartMat 100w/m² - 1.5m² 150w Underfloor Heating MatHMMAT100-1.5
QF #: 16234
1.5 m²
3 m
150 W
ex VATinc VAT
Out of Stock
Due in 13 May
Area1.5 m²
Mat length3 m
Wattage150 W
Harmoni - SmartMat 100w/m² - 2.0m² 200w Underfloor Heating MatHMMAT100-2.0
QF #: 16235
2 m²
4 m
200 W
ex VATinc VAT
Area2 m²
Mat length4 m
Wattage200 W
Harmoni - SmartMat 100w/m² - 2.5m² 250w Underfloor Heating MatHMMAT100-2.5
QF #: 16236
2.5 m²
5 m
250 W
ex VATinc VAT
Area2.5 m²
Mat length5 m
Wattage250 W
Harmoni - SmartMat 100w/m² - 3.0m² 300w Underfloor Heating MatHMMAT100-3.0
QF #: 16237
3 m²
6 m
300 W
ex VATinc VAT
Area3 m²
Mat length6 m
Wattage300 W
Harmoni - SmartMat 100w/m² - 3.5m² 350w Underfloor Heating MatHMMAT100-3.5
QF #: 16238
3.5 m²
7 m
350 W
ex VATinc VAT
Area3.5 m²
Mat length7 m
Wattage350 W
Harmoni - SmartMat 100w/m² - 4.0m² 400w Underfloor Heating MatHMMAT100-4.0
QF #: 16239
4 m²
8 m
400 W
ex VATinc VAT
Area4 m²
Mat length8 m
Wattage400 W
Harmoni - SmartMat 100w/m² - 5.0m² 500w Underfloor Heating MatHMMAT100-5.0
QF #: 16240
5 m²
10 m
500 W
ex VATinc VAT
Area5 m²
Mat length10 m
Wattage500 W
Harmoni - SmartMat 100w/m² - 6.0m² 600w Underfloor Heating MatHMMAT100-6.0
QF #: 16241
6 m²
12 m
600 W
ex VATinc VAT
Area6 m²
Mat length12 m
Wattage600 W
Harmoni - SmartMat 100w/m² - 7.0m² 700w Underfloor Heating MatHMMAT100-7.0
QF #: 16242
7 m²
14 m
700 W
ex VATinc VAT
Area7 m²
Mat length14 m
Wattage700 W
Harmoni - SmartMat 100w/m² - 8.0m² 800w Underfloor Heating MatHMMAT100-8.0
QF #: 16243
8 m²
16 m
800 W
ex VATinc VAT
Area8 m²
Mat length16 m
Wattage800 W
Harmoni - SmartMat 100w/m² - 9.0m² 900w Underfloor Heating MatHMMAT100-9.0
QF #: 16244
9 m²
18 m
900 W
ex VATinc VAT
Area9 m²
Mat length18 m
Wattage900 W
Harmoni - SmartMat 100w/m² - 10.0m² 1000w Underfloor Heating MatHMMAT100-10.0
QF #: 16245
10 m²
20 m
1000 W
ex VATinc VAT
Area10 m²
Mat length20 m
Wattage1000 W
Harmoni - SmartMat 100w/m² - 12.0m² 1200w Underfloor Heating MatHMMAT100-12.0
QF #: 16246
12 m²
24 m
1200 W
ex VATinc VAT
Area12 m²
Mat length24 m
Wattage1200 W
Harmoni 25 Programmable Thermostat140G0052
QF #: 8298
ex VATinc VAT
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

100 watts per m² (for use with timber floor substrates e.g. plywood etc).

The Harmoni underfloor heating mat has a self-adhesive fiberglass backing mesh with an ultra-thin twin conductor 3mm heating cable pre attached, ensuring minimal increase to the existing floor height. The function of the heating mat system is to provide a warm floor. Superior product design ensures a speedy installation with an even heat across the complete floor surface, whilst allowing unlimited adjustment of the heating element to suit irregular formats

Product downloads

Harmoni 25 Datasheet

File Size: 292.00 KB

Harmoni 25 Installation Guide

File Size: 760.16 KB

Harmoni Commissioning Record

File Size: 255.76 KB

Harmoni Installer Warranty

File Size: 761.86 KB

Harmoni Lifetime Warranty

File Size: 760.19 KB

Harmoni Mat Data Sheet

File Size: 1.42 MB

Harmoni Mat Manual

File Size: 1.84 MB

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.