Underfloor Heating Mat 150W

Shop all Electric Underfloor Heating

VideosLifetime Warranty
Underfloor Heating Mat 150W
Underfloor Heating Mat 150W
Underfloor Heating Mat 150W
Underfloor Heating Mat 150W
Underfloor Heating Mat 150W
Underfloor Heating Mat 150W
Product CodeAreaMat LengthWattagePriceStockQty
Harmoni - SmartMat 150w/m² - 0.5m² 75w Underfloor Heating MatHMMAT150-0.5
QF #: 16252
0.5 m²
1 m
75 W
ex VATinc VAT
Area0.5 m²
Mat Length1 m
Wattage75 W
Harmoni - SmartMat 150w/m² - 1.0m² 150w Underfloor Heating MatHMMAT150-1.0
QF #: 16253
1 m²
2 m
150 W
ex VATinc VAT
Area1 m²
Mat Length2 m
Wattage150 W
Harmoni - SmartMat 150w/m² - 1.5m² 225w Underfloor Heating MatHMMAT150-1.5
QF #: 16254
1.5 m²
3 m
225 W
ex VATinc VAT
Area1.5 m²
Mat Length3 m
Wattage225 W
Harmoni - SmartMat 150w/m² - 2.0m² 300w Underfloor Heating MatHMMAT150-2.0
QF #: 16255
2 m²
4 m
300 W
ex VATinc VAT
Area2 m²
Mat Length4 m
Wattage300 W
Harmoni - SmartMat 150w/m² - 2.5m² 375w Underfloor Heating MatHMMAT150-2.5
QF #: 16256
2.5 m²
5 m
375 W
ex VATinc VAT
Area2.5 m²
Mat Length5 m
Wattage375 W
Harmoni - SmartMat 150w/m² - 3.0m² 450w Underfloor Heating MatHMMAT150-3.0
QF #: 16257
3 m²
6 m
450 W
ex VATinc VAT
Area3 m²
Mat Length6 m
Wattage450 W
Harmoni - SmartMat 150w/m² - 3.5m² 525w Underfloor Heating MatHMMAT150-3.5
QF #: 16258
3.5 m²
7 m
525 W
ex VATinc VAT
Area3.5 m²
Mat Length7 m
Wattage525 W
Harmoni - SmartMat 150w/m² - 4.0m² 600w Underfloor Heating MatHMMAT150-4.0
QF #: 16259
4 m²
8 m
600 W
ex VATinc VAT
Area4 m²
Mat Length8 m
Wattage600 W
Harmoni - SmartMat 150w/m² - 5.0m² 750w Underfloor Heating MatHMMAT150-5.0
QF #: 16260
5 m²
10 m
750 W
ex VATinc VAT
Area5 m²
Mat Length10 m
Wattage750 W
Harmoni - SmartMat 150w/m² - 6.0m² 900w Underfloor Heating MatHMMAT150-6.0
QF #: 16261
6 m²
12 m
900 W
ex VATinc VAT
Area6 m²
Mat Length12 m
Wattage900 W
Harmoni - SmartMat 150w/m² - 7.0m² 1050w Underfloor Heating MatHMMAT150-7.0
QF #: 16262
7 m²
14 m
1050 W
ex VATinc VAT
Area7 m²
Mat Length14 m
Wattage1050 W
Harmoni - SmartMat 150w/m² - 8.0m² 1200w Underfloor Heating MatHMMAT150-8.0
QF #: 16263
8 m²
16 m
1200 W
ex VATinc VAT
Area8 m²
Mat Length16 m
Wattage1200 W
Harmoni - SmartMat 150w/m² - 9.0m² 1350w Underfloor Heating MatHMMAT150-9.0
QF #: 16264
9 m²
18 m
1350 W
ex VATinc VAT
Area9 m²
Mat Length18 m
Wattage1350 W
Harmoni - SmartMat 150w/m² - 10.0m² 1500w Underfloor Heating MatHMMAT150-10.0
QF #: 16265
10 m²
20 m
1500 W
ex VATinc VAT
Area10 m²
Mat Length20 m
Wattage1500 W
Harmoni - SmartMat 150w/m² - 12.0m² 1800w Underfloor Heating MatHMMAT150-12.0
QF #: 16266
12 m²
24 m
1800 W
ex VATinc VAT
Area12 m²
Mat Length24 m
Wattage1800 W
Harmoni 25 Programmable Thermostat140G0052
QF #: 8298
ex VATinc VAT
Harmoni HT100 Digital ThermostatHT100
QF #: 16434
ex VATinc VAT
Harmoni 100 Plus HTP100 WiFi Digital ThermostatHTP100
QF #: 16435
ex VATinc VAT

150 watts per m² (for use with concrete floor substrates e.g. sand cement screed, insulated backer boards etc).

The Harmoni underfloor heating mat has a self-adhesive fibre glass 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 100 Thermostat Manual

File Size: 608.60 KB

Harmoni 25 Datasheet

File Size: 292.00 KB

Harmoni 25 Installation Guide

File Size: 760.16 KB

Harmoni App User Guide

File Size: 6.26 MB

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

4.0100% Positive (2 reviews)

Ratings based on data collected by third party reviewing platform.


Gary Holland
31 January 2021 08:14

Unit appears to be ok and operational. The build quality is perhaps not the best as the unit I received doesn’t fully 'snap' in to the 2 ball-bearing locking arms on the wall bracket to mount the unit totally secure to the wall. One arm appears to engage and secure 1 side of the unit but the other side appears slightly loose. Discussing with Heater Shop they have provided feedback to the manufacturers on this.

Programming the unit is a bit confusing if you want to use it only as a heated floor thermostat controlled only from a floor mounted sensor. To their credit Heater Shop followed up on this with the manufacturers as well.

Unit arrived quickly but I had some issues with the unit (thermostat) and raised a ticket through their website. Ticket was followed up a bit slower than I would have hoped but once they responded and we discussed they followed up very quickly on all the ssetup/technical points I raised.


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.

Spread the Cost

with our flexible finance plans
  • No deposit required
  • Choice of simple payment options
  • Easy, quick application
  • Instant decision