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Herschel iQ T-MKW Mains Powered WiFi Thermostat White

The award-winning Herschel iQ MKW Mains Powered WiFi Thermostat is ideal for new builds or renovations where cabling can be hidden


Herschel iQ T-MKW Mains Powered WiFi Thermostat White

The Herschel T-MT is a compact thermostat control that works with Herschel XLS heaters. It has Wifi functionality, a manual temperature mode, a 7×1 day program mode, and a holiday mode. The Herschel iQ MKW is a mains-powered thermostat with a neat cable hiding feature ideal for both domestic and commercial applications. It has a lockable keypad, energy-saving features, and can connect up to 3.6 kW of Herschel heaters. Remember, Herschel iQ controls are only compatible with Herschel heaters. The Herschel T-MT is a compact thermostat control that requires mains power and is specially designed to work with Herschel XLS heaters featuring a built-in SMART-R receiver. With Wifi capabilities, the T-MT allows remote heating control via the Smartlife App or voice control using Alexa or Google Assistant. It offers various modes including manual temperature, 7×1 day program, and holiday (or Away) mode. In all modes, the Herschel heater(s) will turn on when the room temperature is below the desired temperature and turn off once the desired temperature is achieved.

The award-winning Herschel iQ MKW Mains Powered WiFi Thermostat is ideal for new builds or renovations where cabling can be hidden. With a sleek design, it can control temperatures up to 45°C for domestic or commercial applications. When paired with the SmartLife App, the MKW can run in fully programmable ‘Smart Mode’ to manage heating efficiency whether at home or away. The MKW is connected directly to the mains circuit and requires recessing into the wall or can be surface-mounted with a back box. It has the latest EcoDesign energy-saving features, including Herschel’s open window technology, and can operate up to 3.6 kW of Herschel heaters.

The MKW also has a keypad lock feature to prevent unauthorised tampering, making it suitable for commercial applications such as hotels, care homes, student accommodations, and let properties. However, please note that Herschel iQ controls are exclusively designed to work with Herschel heaters.

Note: Herschel iQ controls will only work with Herschel heaters.   *Attempted use with any other heater brand will invalidate the warranty. 

Key Features:

  • 7 x 1 day programmable, 4 periods per day in “Auto” Mode using SmartLife App;
  • Manual “Home” and “Away” modes;
  • Window Open Function (shutting off the heating if a rapid drop in temperature is detected until you override this or wait 15 minutes);
  • Adaptive start (automatically ensures the desired room temperature is achieved at the time set);
  • Target Temperature control (up to 45°C, making it suitable for specialist high temperature applications such as hot yoga studios);
  • Keypad lock;
  • Wall-mounted;
  • Use external sensor (supplied) to use in bathrooms;
  • SmartLife app-enabled.

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IP Rating

IP 24 Rated

13 Amp Plug


Cable Length


Herschel XLS Mains-powered WiFi Thermostat White T-MT Manual

Based on 42 reviews
Andrew Packham
Andrew Packham
My experience of Greenvision has been excellent.They were really helpful, accommodating and understanding in responding to my requirements when they changed. Particular thanks to Paul Campbell. Would recommend.
Martyn Shellard
Martyn Shellard
Excellent from start to finish 😊 highly recommend you speak with these guys before going anywhere else. Thanks guys 😊😊😊
Alison Hutchings
Alison Hutchings
Greenvision are very professional and knowledgeable and I am very happy with my new Dimplex storage heaters. They are very easy to get hold of and are friendly and reliable. I would highly recommend them.
Jennifer Randall
Jennifer Randall
I have been very happy with the service received from Greenvision from ordering , installation and after sales contacr
Kaye Walton
Kaye Walton
I cannot speak highly enough of everyone that I have dealt with at Greenvision with regards to the replacement of my storage heaters. They made the whole process painless and even the installation was quick and done with care. Looking at my electricity usage after the first month, it is around half of what it has been before the installation.
Roz Norman
Roz Norman
Greenvision were professional and knowledgeable about quantum storage heaters. They were prompt in responding to calls and arrived and installed when they stated they were going to. Installation was efficient and the workmen cleaned up after the work area after. After care has been very helpful and they are very patient in guiding through the programming of new heaters for extra information needed.
Barbora Smith
Barbora Smith
From beginning to end Greenvision have been great to deal with no drama at al. From Paul with the original sale to Dave fitting and Amanda for all her help and Knowledge. The Dimplex system is working great and any questions I have Amanda is always ready to help.
Andy Doran
Andy Doran
Greenvision Energy were replacing my Storage Heaters. The service was excellent from the start. I enquired through EDF who passed my details to Greenvision. Within a couple of days they had contacted me and talked over what I required, which included other electrical work. They then sent an estimate. I contacted another large company, who phoned me and I advised what I required. Four weeks later I still haven't received their estimate. I asked Greenvision to give me a fixed price quote so they sent a representative down quickly who was vey efficient. Within a couple of days I had the quote which I accepted. The people at Greenvision were always very pleasant on the phone and always willing to answer any question I asked. Within 14 days the work had been completed. The engineer who came was on time and very pleasant. He was a very efficient worker and left everything clean and tidy. I can well recommend this Company.
Isobel Gleave
Isobel Gleave
I'm very pleased that I went ahead and replaced my old storage heaters with the new Dimplex ones. The whole process went smoothly and efficiently and Greenvision were very helpful at all stages and didn't rush me. Apart from working better than the old ones they also look smart, as does the new bedroom panel heaters. The installers did a brilliant job and didn't leave a trace.

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